I've watched every video available on nitric acid and your video should have been the first one watched. You explained in a way that anyone can understand. Thanks man, really!
Dude, this is a great vid! Thank you so mmuch I wish i had watched this prior to the other 150k vids ire have been through. I never realized how badly smart ppl love to hear themselves talk. clip that sht down!!!! On that note... WELL DONE BRO and Thumbs UP ~~
Thanks for the awesome comment. I hope you find it useful. It is not perfect nitric acid but it works great for copper silver and gold, and it is inexpensive to make. Thanks again!!
I've been making my own hno3 for a while now but since our government doesn't think we can be trusted with stump remover I've had to get creative. I've worked out a process where i recover the nitrate salts from my silver refining waste and make more hno3 from that which is then fed back into the refining over and over. I even recover the no2 gas to make hno3. I also found that the kso4 "waste" that is contaminated with a little hno3 makes an AMAZING fertilizer.
Loving the SSHp ('Super-scientific-hotplate'). After nominating the inoffical mascot & abbreviating it for convienience, i got my weird stuff out of the way... I really enjoy the chill pacing, explanations & the 'not perfect' setting. I have to catch up on a looooot of theory from my chem 101 & stock up towards a decent beginners kit. but being able to already get a lil busy with some practical bits, probaly will help a lot with keeping my motivation up. so.. yeah. Thanks :D
Nice video! A few comments: - At 3:50: It is the other way around: We poor the acid into the water (with KNO3). If pouring the water into the acid, it may instantly boil and generate splashes. - At 7:05: You don't need to heat the acid, what you are observing is just the phenomenon of passivation. Just add water (yes, dilute the acid) and the reaction will become vigorous. - Why did you dissolve the KNO3 in water to begin with? Just put it directly in the sulfuric acid, and you will end up with nearly 95% white fuming nitric acid (after filtering out the solid potassium bisulfate). I totally agree with your comment about the gloves. In this video, I illustrate the phenomenon of passivation, and also show a latex glove catching on fire, while my finger survives the nitric acid: th-cam.com/video/NHBDXtn7pjA/w-d-xo.html
Thank you for your awesome comments! at 3:50 Respectfully, when I did it the other way around adding the acid to the solution on more than one occasion it did spontaneously boil and splash on my arm, it blistered and hurt. I should have been wearing sleeves! I am sure it is possible to do the other way more safely but this time it worked fine. I really don't want anyone to copy me and have an accident, even if minor. at 7:05 I totally agree about the passivation. I did not think my concentration here was enough to cause that with copper but I suppose it is possible. The heat did break it and the reaction made me happy and some good visuals for the video. I will try only adding H2O and see what happens, but I have a feeling you are correct. To answer the last question, well I learned this way from reading so many different approaches. I have never tried dissolving it directly into the acid, but since you say it works; I will try. I only made 200ml here so I will need more to continue my videos and metalworks. I wish I received more comments like yours. I will watch your video although I think I may have seen it before LOL. I hope you continue watching and any comment or question will be appreciated. I am not an expert, but these videos are my notebook while I become one.
@@IIIKNOW3 Let me know if dissolving directly in the sulfuric acid works (and gives white fuming acid). So far I've done it only through distillation, but I don't see why it wouldn't work without distillation. I will definitely try your method of freezing out the potassium bilsulfate!
@@IIIKNOW3 Back in the day, the old school saying: "Acid in the water like you outta!" was the way they taught you. For some reason I never forgot it. It's a good thing to get in the habit of saying. Not only to remind yourself but especially as a teachable moment you can pass on to anyone learning about chemistry! Also, good on you for mentioning the danger of nitrile gloves and HNO₃ as well.
@@appatula Hey thanks for the comment. I guess I am going to have to make the follow up where I show the danger of pouring the Acid into the hot Potassium Nitrate and water solution. It is not just "water". I hope you will watch it, have a great day.
@@IIIKNOW3 No need for a follow up, wanted to share a fun tidbit from my past considering the above subject. I personally think you do a good job explaining what you do. The more people we have like you reiterating proper safety & technique to those who are watching the better. Keep up the great work and the great vids! Anyone that contributes to teaching while reminding others of safety is good in my book. However simple mnemonic's and phrases can be a fun addition while having the added benefit of helping newcomers memorize procedure. Just another way to help others actively avoid bad mistakes as we know...they are often not very forgiving in this neck of the woods!
I used the same process a long time ago. Now I work with (not for) a salvage company recovering PGMs' (hobby) Our cost for HNO3 is about $20 per liter but we buy it in bulk. On average we recover 1 troy oz of Au per 2.5 liters of HNO3. So about $50 cost to recover + - $2000 in gold. Recently recovered 51 grams with about 40 hours of labor time. I enjoy it, lots of fun and it gives me something to do when I'm bored
Love it! If you are doing that much, have you considered running a cell? I know you can get HNO3 cheaper, if you can go pick it up and if you buy quantity. "Free shipping" means included in price, LOL! I have been looking for work "with" one of the electronics recyclers, but it seems they are happier just shipping it off for pennies on the dollar. Thanks for the comment and for watching!!
@@IIIKNOW3 I did use a scrubber system to recover HNO3 from the NO2 fumes. It recovered about 1 liter of 60 % HNO3 from 3 every liters . The system needs to be closed to the atmosphere with the use of check valves and bubble tanks to prevent back flow. But with such a low cost to yield ratio I stopped using it.
@@joek511 It seems like a lot of work to have it closed. I don't think I could because I am the type to add 10 ml every 10 minutes so I look busy. I am sure there was a port you could use, but it would still be an issue for me. I have noticed the nitric last longer if lidded because some of the NO2 goes back into the solution, but I haven't done any big batches in a long time. I am looking forward to doing another gold process soon. One of the first times I made some really low concentration nitric I put a glass with KNO3 HCL and a piece of copper inside a bowl of H2O and then lidded it with another bowl so the fumes went through the water like a bubbler. That method sucked, but it was interesting and the acid worked. I appreciate your comments!
10:23 if I'm not mistaken press and seal is also made of PTFE I think it's made by glad but it's for covering food like cling wrap but far better and I've used it to double over and screw metal caps under glass jars with much success just in case you can't find a plastic lid that fits your glass jars or bottles
You could be correct about press and seal, but I don't know. The do sell PTFE cap liners on Amazon in various sizes although a bit pricey. I have found that using metal caps/lids will corrode over time with even a liner. HDPE is fairly resistant to Nitric, unless you have the 95%+ fuming type stuff. If you plan to make this, you should also plan for only short-term storage anyway. Thanks for the comment and the view!!
@@IIIKNOW3mine didn't turn out as well as yours it was a little weak but I'll try again when I can afford to take another shot at it I'm on a virtually non-existent budget so I have to be patient but that gives me more time to strip phones and laptops and various other assorted electronic devices but I'll eventually get there. I might have done something wrong because I had a lot of potassium sulfate Crystal's left as a by product so I don't think I got a very efficient run out of it. I would love a more efficient process without so much leftovers I can't do much with if you happen to know of any that don't require distillation
Well, I appreciate the conversation. What I did to be more efficient and have less waste was to purchase 70% premade stuff. The downside is the cost at around $75 per quart. This was the best way I found to make a workable Nitric for a lot less money and without distillation. There are other ways, but they all have downsides. Sometimes the crystals form differently, even trapping good HNO3 inside them. I would recommend trying several times to see if you can get better results with practice. What I did sometimes was to pour off what I could at first and use that as the higher concentration, then wash the crystals in distilled water and save that when a lesser is acceptable. Can I ask what methods you are using and which parts you are trying to process and what metals you hope to recover?
I learn new things everyday working on this. I don't like to keep written notes, so I wish I would have started my videos long ago LOL. My idea for posting on TH-cam was so other people could learn while I learn. I know some things from what I have done in the past, but I surely don't everything. I really appreciate all your comments and your time!!
Thank you @IIIKNOW3 for posting, ask me how many f***ks I give who gets credited... none!!!! I'm just happy and grateful u shared it, dont let these haters get u down nit picking er lil thing about the vid, it's 100% perfect u r tha MAN!!!
One option is to let it get room temperature and rinse with small amounts of distilled water a few times (maybe 50ml 5 times) and save the rinse water. You may have to bust up the crystals. The wash water will be very low concentration nitric, but you can still use it. If the crystals at this point no longer smell of nitric, they should be clean. Allow them to dry completely and store in a ziplock bag, I double mine. One day you may need the potassium bisulfate. It should still be corrosive so you should label it as such, and it is mildly toxic if ingested. If you make this very often and find no use for the potassium bisulfate, it could add up. If you choose to dispose of it, at least you know what it is to check with your local hazardous waste handlers. You could also try to find a chemist or university that could use the raw material.
this is a more affordable way for the average interested user and if done with saftey in mind easily done.tyby the way a super strong nitric acid will form a barrier on copper and will not oxidize the metal..add a little water to the mix and see if that will start th copper reaction. if so then you will know you have a high concentrated acid ,or do the weight test
Can you use sodium nitrate instead of the potassium nitrate? Or would you have to substitute the sulfuric acid with hydrochloric acid? I ask because I see nitric acid substitute sold online which is basically sodium nitrate but it says to mix hydrochloric acid, not sulfuric acid.
yes you can, I already did that, but you need to dry it as good as possible before and you need to heat more carefully, cause the reaction tends to be more violent.
LazerSteve is a very smart man. I have learned a lot from him. His recipe is probably more chemically balanced by stoichiometry than what is in the video I made. This acid has residual sulfuric in it which is bad if you need to make lead nitrate or I have been told barium nitrate also. It doesn't hurt anything if you are using it for copper, silver or in Aqua regia for gold; in fact, it is helpful to remove any lead that may be in your material like from solder. This was given to me by someone years ago, and I don't even remember the guy's name. I only made this video to show what helped me get access to nitric when I couldn't purchase it.
Your nitric is only about 32% but that is effective for loads of diiferent application. Distillation will get you to 92%or better and you should get red fumes. Above 95% where you will get white fuming. You should limit heating your solution above 181F because you are degrading the nitric. Your solution sir is not above 68% That is sufficient to dissolve silver or even Aqua Regia for dissolving gold and platinum. There is no need for fuming Nitric unless your making explosives. Tip you can use teflon tape on the cap of your bottle to avoid PTFE lined lids which are pricey. Only make enough Nitric for your use it degrades rapidly in 2weeks it often has lost a lot of strength. Check out NurdRage he has a tutorial on three different methods of making nitric from weak to fuming, and he explains why fuming is hard to achieve in a high humidity environment.
Where do you live? Last time I bought nitric, I paid just under $200 for 10l, with tax and shipping included. That isn’t nearly as good as $4/l, but it’s WAY better than $70/l. I’ve been looking for a process like this to make small quantities so I don’t have to store large amounts of nitric for years. So thank you, I’d much rather store large amounts of kno3 than liquid nitric. I’ll definitely try this method very soon
I live in Florida. So I paid about $145 for 2.5 Liters delivered, so more like $58/L I spaced on the half liter LOL. I know I could find better pricing, especially if I bought more quantity. Where is your source? Next time I would be willing to buy 10L at $20 each. If you try this, know there is extra sulfuric that will be unreacted which won't hurt if you are working with copper, silver, gold and the likes. Thanks!
I have heard it makes an excellent fertilizer, potassium, sulfur, go figure right? You probably want to check what your plants prefer before applying. I have bags of the stuff just in case I find a need. It seems like it could also be used in a flux recipe to convert base metals like iron and copper into sulfides for removal from precious metals in a furnace. Maybe I will test that one day also LOL. Currently I am working on something like that for gold plated scrap, and it could also work in refining computer or electronic wastes.
Just woundering So i tryd this the first time and it worked did a test of about 25g crystals and reduced the ammount of water and sulphuric so i did the rest of my crystals and it still worked once brought to room temp it dose react with copper however it came out verry cloudy like a milky white color woundering what whent wrong the seccond time and if theres a way to clear it up
Please read the reply I left for Terry.The first ten or so times I did as you suggest, adding the acid to the hot water and KNO3 mixture. Every time I did it that way there was a violent reaction. At first, I thought it was a necessary evil to produce my product. On the last time I did it that way, I wasn't wearing sleeves. I got a pretty severe blister. It hurt. Then I tried this way, many, many times and never had another boiling splash. You can see in the video, besides the reaction being exothermic, there is no splashing or boiling. This is testable and repeatable, always the same result. I can't explain the science behind why it works this way with this process. Maybe because it is not just water, but KNO3+H2O that the sulfuric is going into. If I was just diluting acid, of course I would do it the other way. You are not the first to comment this either, but I am not speaking from a textbook. I am speaking from my experience, like you witnessed in the video. I really don't want someone to copy me and get hurt. If that would have been my eyes instead of my arm, it could have been much worse. Obviously, you watched, and I thank you. I appreciate the comment even though it is contrary to what I published.
It seems crazy, but if you add the sulfuric to the mixture of water and KNO3, be ready for splash. It could be that the KNO3 dissolves better when heated. Once it starts to cool, it will begin to settle out causing a thin layer of less dense water over the more dense KNO3 solution. The thin layer of water then spontaneously boils. Whatever you do be careful, and like I said I have done this many times.
I use glass, amber is preferred. PTFE (or Teflon) plastic is another choice but can be expensive. HDPE plastic could work for a short time but not recommended. It should have a tight lid to keep fumes inside and keep out of sunlight.
Amazon and Ebay.... Occasionally I will check Thrift stores, yard sales and flea markets. Glass is glass really, but buying new amber glass can be expensive. If you can find amber glass, you can buy a PTFE stopper or wrap one in Teflon tape. Make sure whatever you get it is not easy to knock over, like long-neck Budweiser bottles are not a good idea LOL.
Goodmorning sir.im a military here in the philippine,i have no money to buy my necessary need to make my experiment complete,cause all chemical here in the philippine is imported from foreign country.specialy nitric acid thats why i want to make nitric acid very pure.thanks for the video and i try to make it asap.if i fail please guide me how to make sir.i need you badly.thanks
Thanks for the comment. I recently purchased 2.5 Liters of 68-70% Nitric for about $145 after shipping and all. It takes quite a bit of it to dissolve Sterling Silver. I use it for Gold, but it is too expensive to use for refining Silver unless the Silver is FREE! You can use this acid for Silver and Copper, no problem and save big $. I even did a video using the last of this batch to refine some gold about a month ago. It is not perfect and it does contain some left over sulfur, but that won't hurt anything when using on Copper or less reactive metals like Silver and Gold. In fact, it will drop any Lead out as white Lead Sulfate. Have a great Christmas holiday season. Be careful and good luck!!
@@IIIKNOW3 I reused the copper nitrate by removing the copper w/ electrolysis . I was able to cement Sterling bypassing the disolving and Cementation route . Look forward to making nitric for my next cell thanks again
Do mind if I clear something up ? To make poor man’s nitric Do you have to add water , can the KNO3 just be added to H2SO4 , then freeze the copper sulfate crystals out .
@@Hill-13 It has been suggested to leave out the water, and some have told me they never use H2O. You don't need water if you are going to use distillation with the KNO3 and H2SO4, and the results will be better although more work. I was going to try the poor man's, freezing without water but haven't had the time yet. This video is how I made it with the best results over the years. If you plan to use this method regularly, try adjusting the ingredients until you find the best for you. I just found out the hardware store near me discontinued stocking the Spectracide Stump Remover. That is disappointing because I was working on a flux recipe containing KNO3 as an oxidizer and I am almost out. Let me know what happens when you try no water.
yes you can, I already did that, but you need to dry it as good as possible before and you need to heat more carefully, cause the reaction tends to be more violent.
Of course, but none of the measuring equipment I have at the moment is accurate enough. My milligram scale is only good to 50 grams and not reliable. My gram/oz scale is accurate enough if you want a 4 ounce piece of fish. I trust my graduated cylinders as much as I trust politicians. I did think about that when making this video. I wouldn't mind doing a titration, but that requires a reagent and reasonably accurate measuring devices. My goal was to make a nitric I could use for metals. If I was making a rocket fuel oxidizer I would have bought a distillation apparatus. I have used 70% reagent grade many times so judging by the reaction, it is close, but so many factors change the perception. I appreciate your comment. Thanks for watching!
That is how I used to make mine, except didnt't dissolve the nitrate in water, just added drain whiz to the salt, mixed, refrigerate to force out the potassium bisulphide, which got used with glycerine fo acroleiin tear gas distillation, or toilet cleaner....
It's KHSO4 that crystallizes out here, not K2SO4. You can re-use it for another run making HNO3 from KNO3 by dry destillation. Unfortunately everything shown here is forbidden for hobby chemists in the EU. Nitrates are monitored, nitric acid >3%, sulfuric acid >15% and hydrogen peroxide >12% are completely banned (if they find it at your home they will send you to prison for up to 3 years!). Sodium bisulfate is still allowed...
I purchased a distillation set so fuming should not be difficult. For my purposes, working with metals especially silver and gold, there is no need to go above 70% and in most applications even that will be diluted or mixed with Hydrochloric for Aqua Regia. I actually purchased 2.5 liters of premade Nitric at 68-70% to make my life easier but it is very expensive. This video is just how I made mine to use for silver when I didn't have the funds to get premade, so I thought I would share for someone who is now where I was then. There is such a small margin in small batch precious metal refining if you have to purchase the source material then buying nitric is too expensive. An example would be if you bought a bunch of silver plated stuff and thought you would dissolve the whole batch in Nitric to recover silver and copper; then your acid expense would be about 2000% or more of the metal value recovered. Thanks for watching and the comment!!
@IIIKNOW3 Yes, I suspect that there are some better electro chemical methods to recover precious metals than the very heavily chemical based methods being commonly used on yt
Thanks for the comment. I am not sure about the "most common" way. Most videos of making nitric use a distillation apparatus although they may use the same starting chemicals. I haven't seen anyone else make a video of this method.
Terry, respectfully, this is not the first time I made Nitric Acid this way. The first ten or so times I did as you suggest, adding the acid to the hot water and KNO3 mixture. Every time I did it that way there was a violent reaction. At first, I thought it was a necessary evil to produce my product. On the last time I did it that way, I wasn't wearing sleeves. I got a pretty severe blister. It hurt. Then I tried this way, many, many times and never had another boiling splash. You can see in the video, besides the reaction being exothermic, there is no splashing or boiling. This is testable and repeatable, always the same result. I can't explain the science behind why it works this way with this process. Maybe because it is not just water, but KNO3+H2O that the sulfuric is going into. If I was just diluting acid, of course I would do it the other way. You are not the first to comment this either, but I am not speaking from a textbook. I am speaking from my experience, like you witnessed in the video. I really don't want someone to copy me and get hurt. If that would have been my eyes instead of my arm, it could have been much worse. Obviously, you watched, and I thank you. I appreciate the comment even though it is contrary to what I published.
I did the push-ups and made a video of gold refining to show it works for what I made it for. Hope it works for you. Be aware that it contains residual Sulfuric that may complicate other uses.
@@IIIKNOW3 Did you do any stochiometry? The amounts of KNO3 and H2SO4 in moles you mentioned don't seem to be equal which means some of it won't react. There will always remain some KHSO4 in solution no matter how much you cool it.
1 mole KNO3 = 101. something grams 1 mole H2SO4 = 98 grams You said the would be residual potassium bisulfate which is impossible because of the excess H2SO4. If there is residual H2SO4, it would be irrelevant for my intended application. Stoichiometry doesn't always work, but this process does for making nitric that will work in metal refining. Since I used 150 g of KNO3 and 150 ml sulfuric, someone can use less, say 80ml sulfuric (95% H2SO4 is like 1.8g/ml) to insure it all reacts and precipitates out, but then you will have the risk of having potassium nitrate residual which to most people working with metals would be a bigger evil. Thanks for your comment!!!
There would not be residual potassium bisulfate because ALL of the KNO3 would have reacted with the sulfuric. What is not to understand? There is MORE sulfuric than KNO3 by stoichiometry so there would be no potassium left to make MORE potassium bisulfate. If there was left over potassium bisulfate, the copper nitrate I produced in the video probably would not crystalize, but I can assure you it is. Currently, it is almost dry and forming perfect geometric crystals. Also, just to note when the KNO3 solution was added to the H2SO4 there was, during the reaction white fumes were produced, Sulfur dioxide is my guess because it did not look like just water vapor. I have no way to quantify that but surely it would affect the chemistry if it was SO2. Listen, you are probably better at written chemistry than I am. I am ok with that. I know with what I am doing, some very smart people will question me and possibly disagree with me. I am not doing written equations here. This is real life application with practical use that can help some people. I would love it if you watched my work and gave me input. However, when I tell you there would be no potassium bisulfate left and explain why, in terms you initiated and you don't understand me it seems like you just want to argue.
I posted this process on the gold refining forum around 15 years ago. Typically the resulting acid is 35-45% concentration. The comment that a portion of the sulfate produced DOES remain in the liquid due to the solubility of the products is 100% true. Examination of the solubility curve for the product is irrefutable proof of that. You gave no credit to where you learned this information, curious when and where you first learned of it? Crediting your peers is a sign of a good scientist and doubly important for students who require references for their papers and articles.Tritration is as simple as digestion of an excess of a known weight of copper in an accurately measured volume of the acid. The amount of copper consumed tells you the moles of nitrate present, which thereby gives you the molarity of the volume of acid used. Your video could have presented the process more directly, without all the chit chat, and been more succinct in my humble opion. Steve
Wow! I get a comment from the great Lazer Steve from the Gold Refining Forum. Thank you for watching and this interaction, I appreciate it even if you are somehow unhappy with what I have presented. So, you are saying there will be potassium bisulfate remaining, even after freezing, or just free sulfuric acid? If I could remember who gave me this recipe, I would totally give them credit. I am not a student, nor do I consider myself a "good scientist". I am only a scientist by the definition "one who does science" and a metallurgist as "one who studies metals". I will happily say here and now that I have read some of your posts over the years and would give you and the forum credit for contributing to what I know today. I am fairly sure I did not "paste and copy" this idea from you. I would not be surprised to find out the person who gave it to me got it from you. If you would be so kind as to post a link here in the comments to the forum's page with your original post of this method I would appreciate it. I realize my video was not perfect. I am trying to make better ones as I continue. I am humble and honest. Some people like the chit-chat and some will not; I understand that. A man once gave me a fantastic recipe for crab cake benedict, I still remember the recipe but I can't remember the chef's name to save my life.
@IIIKNOW3 be sure and read thru all the posts in the link. There is lots of good information that would have been great in your video. Nurd Rage had a segment on the cold recipe in one of his making nitric acid compilations as well. I'm not sure when the timing of his video is with respect to yours as far as production date. He uses bisulfate in his version of the cold nitric acid recipe. Steve
@IIIKNOW3 as for giving scientists credit goes, or anyone for that matter... a simple Google search sorted by date can give you a rough idea of the source of pretty much any information scientific or otherwise...the further back in time the Google result was posted or date is a good indication of its origins. It's the responsibility of the content creator to do their homework beforehand. I only posted about the references because you stated that your video was unique in the aspect of how you do it, or more precisely, not like any other video if I'm quoting you correctly. Even your title (which is what caught my eye while browsing YT) is "Nitric Acid a Different Way" appears to claim that the method shown is somehow unique. It's commonly referred to as "cold nitric acid recipe" or "poormans nitric" among forum members, and it's a staple among many precious metals refiners.
@@lazersteve So, it looks like you may have posted a link but TH-cam did not put it up. Of course, I am going to want to use a title that will catch someone's attention if I am going to bother making videos. My goal was to help some people that did not know of this method and maybe wanted to use it for gold or silver refining, like I was helped. I have commented that this is not an improvement on distillation, and there are plenty of videos on that which are all basically the same, nitrate salt, sulfate, heat to 300 C wrap in aluminum, etc.... That is why I said my video was different putting it in the freezer, not that I invented this. Not everyone has a still set, I don't yet. I really did not find another video on TH-cam that used this method and it was not for a lack of looking.
Ummh! You haven't an clue of what you are doing! That's not hno3, the process you did is not how it is done! Hno3 works wether it's cold or wether it's frigging hot! You claim that you had watched all there is to watch about hno3, but I believe you suffer from adhd! Sad ! Really sad!
This was good. I wanted to do this. I wanted to see this. One thing I CAN Say that could give it more mmph is not adding water first. Still heating it though, but it seems you know this. Nice
I've watched every video available on nitric acid and your video should have been the first one watched. You explained in a way that anyone can understand. Thanks man, really!
You are welcome, really!!!
I agree totally.
I've used nearly a liter that I made following this method; it gives a fairly strong result. Thank you sir and God bless
I am very happy that someone appreciates what I did!!! Thank you!!!!
This is exactly what I needed...You're a mad lad.
Thank you for the upload and the help.
Dude, this is a great vid! Thank you so mmuch I wish i had watched this prior to the other 150k vids ire have been through. I never realized how badly smart ppl love to hear themselves talk. clip that sht down!!!! On that note... WELL DONE BRO and Thumbs UP ~~
Thanks for the awesome comment. I hope you find it useful. It is not perfect nitric acid but it works great for copper silver and gold, and it is inexpensive to make. Thanks again!!
copper exactly @@IIIKNOW3
I've been making my own hno3 for a while now but since our government doesn't think we can be trusted with stump remover I've had to get creative. I've worked out a process where i recover the nitrate salts from my silver refining waste and make more hno3 from that which is then fed back into the refining over and over. I even recover the no2 gas to make hno3. I also found that the kso4 "waste" that is contaminated with a little hno3 makes an AMAZING fertilizer.
The recycling sounds promising. Too bad they won't let you buy KNO3 anymore....
I'm in the UK where KNO3 is _supposed_ to be unobtainable, but I found most butchers have some that they'll sell a bag of fairly cheaply.
The crystallization of the KNO3 is important if you are using saltpeter for corned beef, I have found in the past.
Loving the SSHp ('Super-scientific-hotplate'). After nominating the inoffical mascot & abbreviating it for convienience, i got my weird stuff out of the way... I really enjoy the chill pacing, explanations & the 'not perfect' setting. I have to catch up on a looooot of theory from my chem 101 & stock up towards a decent beginners kit. but being able to already get a lil busy with some practical bits, probaly will help a lot with keeping my motivation up. so.. yeah. Thanks :D
Dude ur a life saver thank you for posting this!!!
Thanks for the comment!!
Nice video!
A few comments:
- At 3:50: It is the other way around: We poor the acid into the water (with KNO3). If pouring the water into the acid, it may instantly boil and generate splashes.
- At 7:05: You don't need to heat the acid, what you are observing is just the phenomenon of passivation. Just add water (yes, dilute the acid) and the reaction will become vigorous.
- Why did you dissolve the KNO3 in water to begin with? Just put it directly in the sulfuric acid, and you will end up with nearly 95% white fuming nitric acid (after filtering out the solid potassium bisulfate).
I totally agree with your comment about the gloves. In this video, I illustrate the phenomenon of passivation, and also show a latex glove catching on fire, while my finger survives the nitric acid: th-cam.com/video/NHBDXtn7pjA/w-d-xo.html
Thank you for your awesome comments!
at 3:50 Respectfully, when I did it the other way around adding the acid to the solution on more than one occasion it did spontaneously boil and splash on my arm, it blistered and hurt. I should have been wearing sleeves! I am sure it is possible to do the other way more safely but this time it worked fine. I really don't want anyone to copy me and have an accident, even if minor.
at 7:05 I totally agree about the passivation. I did not think my concentration here was enough to cause that with copper but I suppose it is possible. The heat did break it and the reaction made me happy and some good visuals for the video. I will try only adding H2O and see what happens, but I have a feeling you are correct.
To answer the last question, well I learned this way from reading so many different approaches. I have never tried dissolving it directly into the acid, but since you say it works; I will try. I only made 200ml here so I will need more to continue my videos and metalworks.
I wish I received more comments like yours. I will watch your video although I think I may have seen it before LOL. I hope you continue watching and any comment or question will be appreciated.
I am not an expert, but these videos are my notebook while I become one.
@@IIIKNOW3
Let me know if dissolving directly in the sulfuric acid works (and gives white fuming acid). So far I've done it only through distillation, but I don't see why it wouldn't work without distillation.
I will definitely try your method of freezing out the potassium bilsulfate!
@@IIIKNOW3 Back in the day, the old school saying: "Acid in the water like you outta!" was the way they taught you. For some reason I never forgot it. It's a good thing to get in the habit of saying. Not only to remind yourself but especially as a teachable moment you can pass on to anyone learning about chemistry! Also, good on you for mentioning the danger of nitrile gloves and HNO₃ as well.
@@appatula Hey thanks for the comment. I guess I am going to have to make the follow up where I show the danger of pouring the Acid into the hot Potassium Nitrate and water solution. It is not just "water". I hope you will watch it, have a great day.
@@IIIKNOW3 No need for a follow up, wanted to share a fun tidbit from my past considering the above subject. I personally think you do a good job explaining what you do. The more people we have like you reiterating proper safety & technique to those who are watching the better. Keep up the great work and the great vids! Anyone that contributes to teaching while reminding others of safety is good in my book. However simple mnemonic's and phrases can be a fun addition while having the added benefit of helping newcomers memorize procedure. Just another way to help others actively avoid bad mistakes as we know...they are often not very forgiving in this neck of the woods!
I used the same process a long time ago. Now I work with (not for) a salvage company recovering PGMs' (hobby) Our cost for HNO3 is about $20 per liter but we buy it in bulk. On average we recover 1 troy oz of Au per 2.5 liters of HNO3. So about $50 cost to recover + - $2000 in gold. Recently recovered 51 grams with about 40 hours of labor time. I enjoy it, lots of fun and it gives me something to do when I'm bored
Love it! If you are doing that much, have you considered running a cell?
I know you can get HNO3 cheaper, if you can go pick it up and if you buy quantity. "Free shipping" means included in price, LOL!
I have been looking for work "with" one of the electronics recyclers, but it seems they are happier just shipping it off for pennies on the dollar.
Thanks for the comment and for watching!!
@@IIIKNOW3 I did use a scrubber system to recover HNO3 from the NO2 fumes. It recovered about 1 liter of 60 % HNO3 from 3 every liters . The system needs to be closed to the atmosphere with the use of check valves and bubble tanks to prevent back flow. But with such a low cost to yield ratio I stopped using it.
@@joek511 It seems like a lot of work to have it closed. I don't think I could because I am the type to add 10 ml every 10 minutes so I look busy. I am sure there was a port you could use, but it would still be an issue for me. I have noticed the nitric last longer if lidded because some of the NO2 goes back into the solution, but I haven't done any big batches in a long time. I am looking forward to doing another gold process soon. One of the first times I made some really low concentration nitric I put a glass with KNO3 HCL and a piece of copper inside a bowl of H2O and then lidded it with another bowl so the fumes went through the water like a bubbler. That method sucked, but it was interesting and the acid worked. I appreciate your comments!
KHSO4 forms in the reaction of sulfuric acid and potassium nitrate, not K2SO4
You are correct!!!
Thanks my friend hasta luego 👍👍👍👍👍👌👌👌👌👌👌👌
10:23 if I'm not mistaken press and seal is also made of PTFE I think it's made by glad but it's for covering food like cling wrap but far better and I've used it to double over and screw metal caps under glass jars with much success just in case you can't find a plastic lid that fits your glass jars or bottles
You could be correct about press and seal, but I don't know. The do sell PTFE cap liners on Amazon in various sizes although a bit pricey. I have found that using metal caps/lids will corrode over time with even a liner. HDPE is fairly resistant to Nitric, unless you have the 95%+ fuming type stuff. If you plan to make this, you should also plan for only short-term storage anyway. Thanks for the comment and the view!!
@@IIIKNOW3mine didn't turn out as well as yours it was a little weak but I'll try again when I can afford to take another shot at it I'm on a virtually non-existent budget so I have to be patient but that gives me more time to strip phones and laptops and various other assorted electronic devices but I'll eventually get there. I might have done something wrong because I had a lot of potassium sulfate Crystal's left as a by product so I don't think I got a very efficient run out of it. I would love a more efficient process without so much leftovers I can't do much with if you happen to know of any that don't require distillation
Well, I appreciate the conversation. What I did to be more efficient and have less waste was to purchase 70% premade stuff. The downside is the cost at around $75 per quart. This was the best way I found to make a workable Nitric for a lot less money and without distillation. There are other ways, but they all have downsides. Sometimes the crystals form differently, even trapping good HNO3 inside them. I would recommend trying several times to see if you can get better results with practice. What I did sometimes was to pour off what I could at first and use that as the higher concentration, then wash the crystals in distilled water and save that when a lesser is acceptable. Can I ask what methods you are using and which parts you are trying to process and what metals you hope to recover?
Awesome video
I'm trying to learn about electroplating and the reactions different metals
Have with different acids
I learn new things everyday working on this. I don't like to keep written notes, so I wish I would have started my videos long ago LOL. My idea for posting on TH-cam was so other people could learn while I learn. I know some things from what I have done in the past, but I surely don't everything. I really appreciate all your comments and your time!!
Would you know what concoction I should use to disolve nichrome?
We can test it after the wire I ordered arrives, supposed to be here Sunday. Do you know the mixture of the nichrome you have?
I'm not positive
I think 30/70
Came from China
Thank you @IIIKNOW3 for posting, ask me how many f***ks I give who gets credited... none!!!! I'm just happy and grateful u shared it, dont let these haters get u down nit picking er lil thing about the vid, it's 100% perfect u r tha MAN!!!
Are the crystals still usable or are they done
Can you use sodium nitrate in this process
Great video. Thank you. What is the best way to dispose of the salts after decanting off your nitric acid? Appreciate it.
One option is to let it get room temperature and rinse with small amounts of distilled water a few times (maybe 50ml 5 times) and save the rinse water. You may have to bust up the crystals. The wash water will be very low concentration nitric, but you can still use it. If the crystals at this point no longer smell of nitric, they should be clean. Allow them to dry completely and store in a ziplock bag, I double mine. One day you may need the potassium bisulfate. It should still be corrosive so you should label it as such, and it is mildly toxic if ingested.
If you make this very often and find no use for the potassium bisulfate, it could add up. If you choose to dispose of it, at least you know what it is to check with your local hazardous waste handlers. You could also try to find a chemist or university that could use the raw material.
Don’t waste the salts! Recrystalize from boiling water and purify. The salts are likely potassium bisulfate NOT potassium sulfate.
I was under the impression you can also make it by electrolysis of store bought ammonia.
Awesome! Thank-you so much. I will definately try this method.
very cool video. Thank you for your time and effort.
You are welcome and thank you!
this is a more affordable way for the average interested user and if done with saftey in mind easily done.tyby the way a super strong nitric acid will form a barrier on copper and will not oxidize the metal..add a little water to the mix and see if that will start th copper reaction. if so then you will know you have a high concentrated acid ,or do the weight test
Can you use sodium nitrate instead of the potassium nitrate? Or would you have to substitute the sulfuric acid with hydrochloric acid? I ask because I see nitric acid substitute sold online which is basically sodium nitrate but it says to mix hydrochloric acid, not sulfuric acid.
can I use this process with ammonium nitrate crystals?
yes you can, I already did that, but you need to dry it as good as possible before and you need to heat more carefully, cause the reaction tends to be more violent.
Thanks for your comments!
So, what is the concentration percentage of the solution, and can the concentration percentage be increased by heating?
I just subscribed, and thanks for sharing.
I'm declaring this a "Troll Free" zone from now on.... (Steve)
😊😊😅😅😂😂
I noticed LazerSteve cold nitric recipe is 100ml of water, 202grams of potassium nitrate, 56ml of sulfuric acid (96%+)
What am i missing here?
LazerSteve is a very smart man. I have learned a lot from him. His recipe is probably more chemically balanced by stoichiometry than what is in the video I made. This acid has residual sulfuric in it which is bad if you need to make lead nitrate or I have been told barium nitrate also. It doesn't hurt anything if you are using it for copper, silver or in Aqua regia for gold; in fact, it is helpful to remove any lead that may be in your material like from solder. This was given to me by someone years ago, and I don't even remember the guy's name. I only made this video to show what helped me get access to nitric when I couldn't purchase it.
@@IIIKNOW3 Yes, it works great on dissolving base metals leaving gold foils, and aqua regia.
I would've been without had you not posted this video.
Good day sir I love this video ♥️
Thank you so much!!
Your nitric is only about 32% but that is effective for loads of diiferent application. Distillation will get you to 92%or better and you should get red fumes. Above 95% where you will get white fuming.
You should limit heating your solution above 181F because you are degrading the nitric.
Your solution sir is not above 68%
That is sufficient to dissolve silver or even Aqua Regia for dissolving gold and platinum. There is no need for fuming Nitric unless your making explosives.
Tip you can use teflon tape on the cap of your bottle to avoid PTFE lined lids which are pricey.
Only make enough Nitric for your use it degrades rapidly in 2weeks it often has lost a lot of strength.
Check out NurdRage he has a tutorial on three different methods of making nitric from weak to fuming, and he explains why fuming is hard to achieve in a high humidity environment.
Thanks for the comment. I just made a gold refining video using what I had left from this video.
When storing use a loose plug cap not a sealed cap pressure will build over time needs to vent
I was about to say the same thing, but seen your post first
Where do you live? Last time I bought nitric, I paid just under $200 for 10l, with tax and shipping included. That isn’t nearly as good as $4/l, but it’s WAY better than $70/l.
I’ve been looking for a process like this to make small quantities so I don’t have to store large amounts of nitric for years. So thank you, I’d much rather store large amounts of kno3 than liquid nitric. I’ll definitely try this method very soon
I live in Florida. So I paid about $145 for 2.5 Liters delivered, so more like $58/L I spaced on the half liter LOL. I know I could find better pricing, especially if I bought more quantity. Where is your source? Next time I would be willing to buy 10L at $20 each. If you try this, know there is extra sulfuric that will be unreacted which won't hurt if you are working with copper, silver, gold and the likes. Thanks!
Duda energy
Thanks, I will try them next time.
Can anything useful be done with the potassium sulfate by-product? 5:30
I have heard it makes an excellent fertilizer, potassium, sulfur, go figure right? You probably want to check what your plants prefer before applying. I have bags of the stuff just in case I find a need. It seems like it could also be used in a flux recipe to convert base metals like iron and copper into sulfides for removal from precious metals in a furnace. Maybe I will test that one day also LOL. Currently I am working on something like that for gold plated scrap, and it could also work in refining computer or electronic wastes.
Oh, also make sure it is rinsed very, very well, in case that is not common sense. LOL
Just woundering
So i tryd this the first time and it worked did a test of about 25g crystals and reduced the ammount of water and sulphuric so i did the rest of my crystals and it still worked once brought to room temp it dose react with copper however it came out verry cloudy like a milky white color woundering what whent wrong the seccond time and if theres a way to clear it up
My first question would be about the copper. Is the copper clean and bright, or old stuff, like soldered in places?
Thank you.
You're welcome!
Acid into water, not the other way around
Please read the reply I left for Terry.The first ten or so times I did as you suggest, adding the acid to the hot water and KNO3 mixture. Every time I did it that way there was a violent reaction. At first, I thought it was a necessary evil to produce my product. On the last time I did it that way, I wasn't wearing sleeves. I got a pretty severe blister. It hurt.
Then I tried this way, many, many times and never had another boiling splash. You can see in the video, besides the reaction being exothermic, there is no splashing or boiling. This is testable and repeatable, always the same result.
I can't explain the science behind why it works this way with this process. Maybe because it is not just water, but KNO3+H2O that the sulfuric is going into. If I was just diluting acid, of course I would do it the other way.
You are not the first to comment this either, but I am not speaking from a textbook. I am speaking from my experience, like you witnessed in the video. I really don't want someone to copy me and get hurt. If that would have been my eyes instead of my arm, it could have been much worse.
Obviously, you watched, and I thank you. I appreciate the comment even though it is contrary to what I published.
I wonder if the reason it worked that way is because sulphuric acid is very hungry for the water as it's used as a drying agent.
It seems crazy, but if you add the sulfuric to the mixture of water and KNO3, be ready for splash. It could be that the KNO3 dissolves better when heated. Once it starts to cool, it will begin to settle out causing a thin layer of less dense water over the more dense KNO3 solution. The thin layer of water then spontaneously boils. Whatever you do be careful, and like I said I have done this many times.
Thank you, this video is exactly what i needed. And what container do you use to store nitric acid?
I use glass, amber is preferred. PTFE (or Teflon) plastic is another choice but can be expensive. HDPE plastic could work for a short time but not recommended. It should have a tight lid to keep fumes inside and keep out of sunlight.
@@IIIKNOW3 where do you get your containers?
Amazon and Ebay.... Occasionally I will check Thrift stores, yard sales and flea markets. Glass is glass really, but buying new amber glass can be expensive. If you can find amber glass, you can buy a PTFE stopper or wrap one in Teflon tape. Make sure whatever you get it is not easy to knock over, like long-neck Budweiser bottles are not a good idea LOL.
@@IIIKNOW3 thanks
So many many thanks
So many many you're welcomes!!
Thanks dude! Gonna try it
Great video! Thanks!
You are welcome
Love from France
Love back from Florida
Nice video
Thank you!
Goodmorning sir.im a military here in the philippine,i have no money to buy my necessary need to make my experiment complete,cause all chemical here in the philippine is imported from foreign country.specialy nitric acid thats why i want to make nitric acid very pure.thanks for the video and i try to make it asap.if i fail please guide me how to make sir.i need you badly.thanks
Magandang umaga from the USA! Happy to help a Filipino!
Just saw this thanks
I refined some silver this weekend and it cost More in acid then I recovered after splitting
Thanks for the comment. I recently purchased 2.5 Liters of 68-70% Nitric for about $145 after shipping and all. It takes quite a bit of it to dissolve Sterling Silver. I use it for Gold, but it is too expensive to use for refining Silver unless the Silver is FREE! You can use this acid for Silver and Copper, no problem and save big $. I even did a video using the last of this batch to refine some gold about a month ago. It is not perfect and it does contain some left over sulfur, but that won't hurt anything when using on Copper or less reactive metals like Silver and Gold. In fact, it will drop any Lead out as white Lead Sulfate. Have a great Christmas holiday season. Be careful and good luck!!
@@IIIKNOW3 I reused the copper nitrate by removing the copper w/ electrolysis . I was able to cement Sterling bypassing the disolving and Cementation route . Look forward to making nitric for my next cell thanks again
Do mind if I clear something up ?
To make poor man’s nitric
Do you have to add water , can the KNO3 just be added to H2SO4 , then freeze the copper sulfate crystals out .
Ps Lazer Steve straightened me out with removing the copper from copper nitrate ( thanks LS)
@@Hill-13 It has been suggested to leave out the water, and some have told me they never use H2O. You don't need water if you are going to use distillation with the KNO3 and H2SO4, and the results will be better although more work. I was going to try the poor man's, freezing without water but haven't had the time yet. This video is how I made it with the best results over the years. If you plan to use this method regularly, try adjusting the ingredients until you find the best for you. I just found out the hardware store near me discontinued stocking the Spectracide Stump Remover. That is disappointing because I was working on a flux recipe containing KNO3 as an oxidizer and I am almost out. Let me know what happens when you try no water.
thanks for the vid
You are welcome!
Can ammonium nitrate be used instead of potassium nitrate? I live i a place ammonium nitrate is easy to find.
yes you can, I already did that, but you need to dry it as good as possible before and you need to heat more carefully, cause the reaction tends to be more violent.
@@ralfvk.4571 thanks alot
Thanks to both of you for the comments.
@@IIIKNOW3 quik question. can conc hcl acid be used instead of sulphuric acid with ammonium nitrate?
@@bobbyqritikol4688 That sounds like a bad idea mixing an ammonia compound with chlorine. I don't think it will produce a usable nitric acid either.
Can I use amonium nitrate instead of kno3
I believe you can, however I understand the reaction can be much more volatile so extra care should be used. Thanks for the comment.
Good job.
Thank you!!!
next time, you might consider looking at the density of the product to determine concentration
Of course, but none of the measuring equipment I have at the moment is accurate enough. My milligram scale is only good to 50 grams and not reliable. My gram/oz scale is accurate enough if you want a 4 ounce piece of fish. I trust my graduated cylinders as much as I trust politicians. I did think about that when making this video. I wouldn't mind doing a titration, but that requires a reagent and reasonably accurate measuring devices. My goal was to make a nitric I could use for metals. If I was making a rocket fuel oxidizer I would have bought a distillation apparatus. I have used 70% reagent grade many times so judging by the reaction, it is close, but so many factors change the perception.
I appreciate your comment. Thanks for watching!
I will try to put that information in a future video. I ordered a new cylinder set.
This is only the second time I've seen a way to make wight nitric acid.
Awesome, thanks.
That is how I used to make mine, except didnt't dissolve the nitrate in water, just added drain whiz to the salt, mixed, refrigerate to force out the potassium bisulphide, which got used with glycerine fo acroleiin tear gas distillation, or toilet cleaner....
Thanks for the comment!
You really invest in a distillation set.
I did thank you.
yo i have the same hot plate but in white yeah bro that's the super science hot plater IF i bught nitric acid here in Canada its per liter %$3000!
It's KHSO4 that crystallizes out here, not K2SO4. You can re-use it for another run making HNO3 from KNO3 by dry destillation.
Unfortunately everything shown here is forbidden for hobby chemists in the EU. Nitrates are monitored, nitric acid >3%, sulfuric acid >15% and hydrogen peroxide >12% are completely banned (if they find it at your home they will send you to prison for up to 3 years!). Sodium bisulfate is still allowed...
You are correct, I made that error in production. Thanks for the comment.
Get yourself a simple retort and pull off WFNA/RFNA!
I purchased a distillation set so fuming should not be difficult. For my purposes, working with metals especially silver and gold, there is no need to go above 70% and in most applications even that will be diluted or mixed with Hydrochloric for Aqua Regia. I actually purchased 2.5 liters of premade Nitric at 68-70% to make my life easier but it is very expensive. This video is just how I made mine to use for silver when I didn't have the funds to get premade, so I thought I would share for someone who is now where I was then. There is such a small margin in small batch precious metal refining if you have to purchase the source material then buying nitric is too expensive. An example would be if you bought a bunch of silver plated stuff and thought you would dissolve the whole batch in Nitric to recover silver and copper; then your acid expense would be about 2000% or more of the metal value recovered. Thanks for watching and the comment!!
@IIIKNOW3 Yes, I suspect that there are some better electro chemical methods to recover precious metals than the very heavily chemical based methods being commonly used on yt
Thanks for vidéo
You are welcome!
Wasn't that 1 part water and 1 part nitrate?
Probably, the video wasn't perfect. I just wanted to show the method for people like me who needed nitric on the cheap.
@@IIIKNOW3 Great video BTW, i wish i knew this method long ago .
Seems like a good idea before distillation.
Its a cleaner type of the soo called poor mans nitric acid.
Thanks for the comment!
I can send you some Nichrome if wanted do a video with it.
I ordered some nichrome wire from Amazon. It should be here tomorrow. Thanks for the offer!!
I would say, it's the most common way.
Thanks for the comment. I am not sure about the "most common" way. Most videos of making nitric use a distillation apparatus although they may use the same starting chemicals. I haven't seen anyone else make a video of this method.
200 coment complete❤❤❤
Always add acid to water. Not this way! 5:23
Terry, respectfully, this is not the first time I made Nitric Acid this way.
The first ten or so times I did as you suggest, adding the acid to the hot water and KNO3 mixture. Every time I did it that way there was a violent reaction. At first, I thought it was a necessary evil to produce my product. On the last time I did it that way, I wasn't wearing sleeves. I got a pretty severe blister. It hurt.
Then I tried this way, many, many times and never had another boiling splash. You can see in the video, besides the reaction being exothermic, there is no splashing or boiling. This is testable and repeatable, always the same result.
I can't explain the science behind why it works this way with this process. Maybe because it is not just water, but KNO3+H2O that the sulfuric is going into. If I was just diluting acid, of course I would do it the other way.
You are not the first to comment this either, but I am not speaking from a textbook. I am speaking from my experience, like you witnessed in the video. I really don't want someone to copy me and get hurt. If that would have been my eyes instead of my arm, it could have been much worse.
Obviously, you watched, and I thank you. I appreciate the comment even though it is contrary to what I published.
I'm going to try it today I kno3 that everyone is giving you push ups
I did the push-ups and made a video of gold refining to show it works for what I made it for. Hope it works for you. Be aware that it contains residual Sulfuric that may complicate other uses.
That's wats up thank you bro! Hmu
You are welcome!!
Cool
Thank you!!
Your nitric acid will contain some sulfuric acid and nitrate.
Yes, you are correct about the sulfuric. There should be no residual nitrate
You didn't produce pure nitric acid. It still contains potassium bisulfate and excess sulfuric acid.
Sorry, I disagree. If you care to explain I will listen.
@@IIIKNOW3 Did you do any stochiometry? The amounts of KNO3 and H2SO4 in moles you mentioned don't seem to be equal which means some of it won't react. There will always remain some KHSO4 in solution no matter how much you cool it.
1 mole KNO3 = 101. something grams
1 mole H2SO4 = 98 grams
You said the would be residual potassium bisulfate which is impossible because of the excess H2SO4.
If there is residual H2SO4, it would be irrelevant for my intended application.
Stoichiometry doesn't always work, but this process does for making nitric that will work in metal refining.
Since I used 150 g of KNO3 and 150 ml sulfuric, someone can use less, say 80ml sulfuric (95% H2SO4 is like 1.8g/ml) to insure it all reacts and precipitates out, but then you will have the risk of having potassium nitrate residual which to most people working with metals would be a bigger evil.
Thanks for your comment!!!
I don't get it. Excess sulfuric acid doesn't prevent the formation of potassium bisulfate and cooling it doesn't remove all of it.
There would not be residual potassium bisulfate because ALL of the KNO3 would have reacted with the sulfuric. What is not to understand?
There is MORE sulfuric than KNO3 by stoichiometry so there would be no potassium left to make MORE potassium bisulfate.
If there was left over potassium bisulfate, the copper nitrate I produced in the video probably would not crystalize, but I can assure you it is. Currently, it is almost dry and forming perfect geometric crystals.
Also, just to note when the KNO3 solution was added to the H2SO4 there was, during the reaction white fumes were produced, Sulfur dioxide is my guess because it did not look like just water vapor. I have no way to quantify that but surely it would affect the chemistry if it was SO2.
Listen, you are probably better at written chemistry than I am. I am ok with that. I know with what I am doing, some very smart people will question me and possibly disagree with me. I am not doing written equations here. This is real life application with practical use that can help some people. I would love it if you watched my work and gave me input. However, when I tell you there would be no potassium bisulfate left and explain why, in terms you initiated and you don't understand me it seems like you just want to argue.
You shouldn't use water at all.
Fair enough. Thanks for watching and the comment. I used what I had left making a new gold refining video to show it worked.
I posted this process on the gold refining forum around 15 years ago. Typically the resulting acid is 35-45% concentration. The comment that a portion of the sulfate produced DOES remain in the liquid due to the solubility of the products is 100% true. Examination of the solubility curve for the product is irrefutable proof of that. You gave no credit to where you learned this information, curious when and where you first learned of it? Crediting your peers is a sign of a good scientist and doubly important for students who require references for their papers and articles.Tritration is as simple as digestion of an excess of a known weight of copper in an accurately measured volume of the acid. The amount of copper consumed tells you the moles of nitrate present, which thereby gives you the molarity of the volume of acid used. Your video could have presented the process more directly, without all the chit chat, and been more succinct in my humble opion. Steve
Wow! I get a comment from the great Lazer Steve from the Gold Refining Forum. Thank you for watching and this interaction, I appreciate it even if you are somehow unhappy with what I have presented.
So, you are saying there will be potassium bisulfate remaining, even after freezing, or just free sulfuric acid?
If I could remember who gave me this recipe, I would totally give them credit. I am not a student, nor do I consider myself a "good scientist". I am only a scientist by the definition "one who does science" and a metallurgist as "one who studies metals". I will happily say here and now that I have read some of your posts over the years and would give you and the forum credit for contributing to what I know today. I am fairly sure I did not "paste and copy" this idea from you. I would not be surprised to find out the person who gave it to me got it from you.
If you would be so kind as to post a link here in the comments to the forum's page with your original post of this method I would appreciate it.
I realize my video was not perfect. I am trying to make better ones as I continue. I am humble and honest. Some people like the chit-chat and some will not; I understand that.
A man once gave me a fantastic recipe for crab cake benedict, I still remember the recipe but I can't remember the chef's name to save my life.
@IIIKNOW3 be sure and read thru all the posts in the link. There is lots of good information that would have been great in your video. Nurd Rage had a segment on the cold recipe in one of his making nitric acid compilations as well. I'm not sure when the timing of his video is with respect to yours as far as production date. He uses bisulfate in his version of the cold nitric acid recipe. Steve
@IIIKNOW3 as for giving scientists credit goes, or anyone for that matter... a simple Google search sorted by date can give you a rough idea of the source of pretty much any information scientific or otherwise...the further back in time the Google result was posted or date is a good indication of its origins. It's the responsibility of the content creator to do their homework beforehand. I only posted about the references because you stated that your video was unique in the aspect of how you do it, or more precisely, not like any other video if I'm quoting you correctly. Even your title (which is what caught my eye while browsing YT) is "Nitric Acid a Different Way" appears to claim that the method shown is somehow unique. It's commonly referred to as "cold nitric acid recipe" or "poormans nitric" among forum members, and it's a staple among many precious metals refiners.
For completeness sake, here's the NurdRage video from 3 years ago where he makes cold nitric acid.
th-cam.com/video/CqzrTxshOXM/w-d-xo.html
@@lazersteve So, it looks like you may have posted a link but TH-cam did not put it up. Of course, I am going to want to use a title that will catch someone's attention if I am going to bother making videos. My goal was to help some people that did not know of this method and maybe wanted to use it for gold or silver refining, like I was helped. I have commented that this is not an improvement on distillation, and there are plenty of videos on that which are all basically the same, nitrate salt, sulfate, heat to 300 C wrap in aluminum, etc.... That is why I said my video was different putting it in the freezer, not that I invented this. Not everyone has a still set, I don't yet. I really did not find another video on TH-cam that used this method and it was not for a lack of looking.
Ummh! You haven't an clue of what you are doing! That's not hno3, the process you did is not how it is done! Hno3 works wether it's cold or wether it's frigging hot! You claim that you had watched all there is to watch about hno3, but I believe you suffer from adhd! Sad ! Really sad!
Nothing you said is correct.
Did you notice I am your first subscriber? Hope you do something spectacular so you can teach me something LOL....
Wait, I have to dry some copper vinegar out with a torch... BRB...
Michael, mental illness and chemistry can be dangerous, be careful.
can you elaborate?
This was good. I wanted to do this. I wanted to see this. One thing I CAN Say that could give it more mmph is not adding water first. Still heating it though, but it seems you know this. Nice
Thanks!!
@@IIIKNOW3 you're welcome 😊