How to Purify by Recrystallization
ฝัง
- เผยแพร่เมื่อ 4 ธ.ค. 2009
- We show how to purify aluminum nitrate and strontium nitrate by recrystallization. This is important because those two substances must be extremely pure for our upcoming video on making glow in the dark powder.
First make aluminum nitrate from our previous video: • How to Make Aluminum N...
Dissolve the dry aluminum nitrate in water and filter off any insoluble materials. We could not filter it off before it dried in the previous video because the particles at that stage are much too small. It needs crystallize once to aggregate into particles large that can be filtered.
After filtering, dry off the aluminum nitrate. The desiccator bag might be useful here: • How to make a Desiccat...
After drying, carefully weigh out the crystals. Then take that mass and add in 20% mass of water. So if you have 50g like me, you add 10g of water (or 10mL since density is 1g/mL).
It won't all dissolve, so carefully heat the mixture until it dissolves. Then cover it and let it cool down. Eventually it'll crystallize out purer crystals.
After the mixture cools to room temperature, and left for a few hours. The liquid is poured off and discarded, it has the impurities and is not needed.
The crystals are again weighed and once again they are recrystallized with 20% water.
Once this is done. Dry the final product. I started with 50g and ended up with 17g. But now it's very pure. Better than 99%
Strontium nitrate also needs to be purified. But it's solubility doesn't change that much with temperature so we'll have to purify by slow evaporation recrystallization rather than thermal cycle recrystallization.
First, make strontium nitrate like our previous video: • Make Strontium Nitrate
Once again, dissolve it in water and filter it. Then let it crystallize. But before it dries completely, let the liquid reduce to about 20% of it's saturated volume. So I started with a saturated solution of 10mL of strontium nitrate, i then waited until it evaporated down to 2mL of fluid. The crystals are not included in this assessment. Then discard the liquid. Repeat the recrystallization process.
Once again, use the desiccator bag to obtain extremely dry chemicals.
We are now ready to produce glow-in-the-dark powder. - วิทยาศาสตร์และเทคโนโลยี
Why in Einstein's name does this have millions of views? It sucks. Seriously, i'm the guy who made it... and even i'll tell you; it SUCKS.
If you want something actually COOL, watch me make glow sticks: th-cam.com/video/tItOOpyJP5k/w-d-xo.html or sodium metal: th-cam.com/video/BsNoiFj3wlw/w-d-xo.html or even a nuclear battery: th-cam.com/video/KKdzhPiOqqg/w-d-xo.html
Anything! But not this video.
Hey boss, do you know how to recrystallize menthol crystals? I have a video I'm making that about meth, and the crystals I got in the mail today were liquefied. I froze them, it was a cloudy gummy mess. I melted them back and let them sit in a bowl to get to room temp naturally, but it all looks terrible (no crystals, just... I don't know, gross). Really need some help. Please respond as soon as you can. Thank you so much.
@@EveryMistakeYouCanMake What does menthol have to do with meth? Just curious. You probably would have gotten a reply if you had left out the meth part...
@@jonross377 You are probably correct, lol. Looking back, my whole question looks suspicious. Alright, so meth, specifically the version known as "ice" looks very similar to menthol crystals. My channel on TH-cam is dedicated to helping parents and children know everything about drugs. No scare tactics, just truth. In the first video I'm making, I need a substitute for meth because I don't want to actually go purchase meth. It's incredibly easy to get, but I don't want to put myself at risk anymore. Even just possession of the drug is a major felony. The script for that first video, for the actual show, is so powerful; the imagery needs to perfectly align with it. Thus, I need something that looks like meth and the menthol crystals that Amazon dropped me off yesterday, melted :(
@@EveryMistakeYouCanMake I just looked up meth crystals and menthol crystals and dang, they look EXACTLY the same.
@@jonross377 Yep. The menthol shards are slightly skinnier and longer, but for the most part, that's what looks like. I hope the owner of this channel gets back to me. I need to get this done asap. I have no idea what I'm doing.
What we have are solubility tables, which tell us the solubility of our compound at different temperatures in different solvents. We look for a solvent where the compound has low solubility at room temperature (or colder) and high solubility at hotter temperatures. This is ideal, as the crystals will come out when the solvent cools from being heated, purifying them. This is the general idea of recrystallization.
This is the first explanation of the process of recrystallization that makes 100% sense and answers all my questions. Thank you!
Thanks for the help. I'm purifying azides in different solvents and it's working well so far. I just added a bit too much solvent and need to evaporate some off.
Of all the scientists on youtube, you NurdRage, are the BEST!!!
hehe i am following along with everything you do. right now i have lioke 5 glow sticks i made using your steps that i haven't even broken
@myrdale
I tried that but the purity just wasn't good enough to make phosphorescent powder.
Recristalization, great technique. Thanks for positing this vids, you are really making a excellent service of inciting the love for chemistry on people.
Wht is
I have some Strontium Nitrate from an old road flare (I suspect it contains some sulfur too) and it doesn't seem to dissolve in water at all, blame the sulfur. How can I purify by crystallization with something that is hydrophobic and heat sensitive? Thank you
You make some great videos. I do wonder why you didn't heat the strontium nitrate just to speed evaporation. Where do you find solubility vs. temperature information? or is it something you just remember from doing so much?
I love him saying "product" all the time.
Am I the only one who's fascinated by this science here? Everyone else is disliking "cause Breaking Bad"...
ItsmeJamesAJ yea its really something.
All I'm saying is 2 gases in Liquid form mixed with liquid pseudo and you are home
It's up to you to find out what gases
This is perfect for me I've been working with copper nitrate and I plan to work with iron nitrate as well.
I like the science behind that
@personperson666
While it does improve the crystal growth somewhat, eventually you reach a limit where the size is dictated by other variables like size of the container, temperature, humidity, etc.etc.etc.
have you done a video on hydro-thermal synthesis? would be interesting but for video it would probably have to have a thick fused quartz chamber walled system to be able to see what is going on, which I am not sure could handle the chemical reaction of water at excessive temps trying to dissolve it like say it does for aluminum oxide for growing sapphire crystals :)
Chemistry is awesome, just like the narrator's voice of this video.
Hi Nice video Can you explain Me How many chemicals need for made this And how can is possible to get these chemicals. .please explain me
when i did this the crystals turned back into the same white cloudy color. Does the Clarity of the crystals relate to their purity?
I love you’re methods, and I rarely (if ever) disagree) however I’m at a loss as to why deionized water is less efficient? I have a few ideas, but they just seem negligible to me. I’m curious as to what you might have to say.
this video is perfect
also i never seen any youtube video with
a box video inside
may I ask for a complete video with the ingredients needed and how to make it
What is it used for or what did you make I'm curious I only caught this one video.
you can also use R/O water as long as the membranes and filters are high end.
How do you know what solvents will be suitable for different starting products and weather they will require heat
How do you prevent supersaturation? When I try purifying solutions by recrystallization, they seem to end up supersaturating and won't come out of solution until I introduce a seed, and it's not as pure when the crystals grow in a matter of seconds. Maybe these are different, I haven't actually made aluminum or strontium nitrate yet, but in general when recrystallizing, how do you keep them from supersaturating?
Is there any place I can find a more specific crystalization procces for lysergic acids?
How do you know that what crystallizes is actually your product? Is it possible for some impurities to crystallize before your product does?
Love this channel !
Can you do this with silver fulminate i am scared of mixing because it might cause an explosion or murcury fulminate?
@tzermaan
I'm actually trying to put together such a DVD myself. Once i have a few more videos, as well fix some mistakes and edit a few issues, i'll release such a DVD directly.
question if the contaminants can crystalise out before the chemical you want does cant you pour the solution out then crystalise that?
Thank you, I shall buy it once it is released.
Are you still using the same account is unbelievable it has been 13 years since your comment
Will this method work for sodiumacetate trihydrate? Well, I maybe have to get rid of the trihydrate thing, making in nonhydrate (correct spelled?), but how do I do that?
can i do this with mdma?
Richard priors favourite video apparently.
You can reclaim lost product it just takes work. you gather all the solution you poured off in the initial purification till you have enough to again filter and recrystallize.
This is only cost or time effective when you do continuous or repeated operations of the same kind.
@mafl25
yeah, but it's now chock full of impurities. After all, to make one portion purer the impurities have to go somewhere.
Just save the discarded liquids and dry them. If you can find a use for them that isn't sensitive to impurities then go for it.
Easy to apply to my application, wonderful, see yall on mars
Will this method work with technical grade KNO3? Thank You.
You have to take in the recrystallization basically 20% of the water volume of the substance?
Or is that depending on the solubility of the substance?
Someone answer this shit !
Try find something in the littature
Instantly Subed after the first few sec of this vid!
Instantly subed after seeing your comment before ad was finished
Would you be able to evaporate the strontium nitrate solution in a vacuum to speed it up? Or would this no affect the amount of time significantly?
Can you synthesize crystaline methamphetamine please? Nice vid
Can the purification be made any more efficient than this? It seems like allot of product is wasted.
You can actually save the impure liquid that has been poured off and let it dry. This way you will have some pure and some impure product that can still be used in reactions that can tollerate impuritys
They got spooked tbh
Is it possible to recrystallize red phosphorous?
Lotmom BG li si 😀
What is being used to filter it? That white cone shaped thing
@fedaikn
the crystals are pure enough for the synthesis of phosphorescent powder.
And you do get rid of most of the liquid, and thus of the impurities, when you decant off the liquid.
Soap making is my hobby and I want to use ash extracted lye to make soap but I don't want to go through the trouble of cleaning the impurities. Is this method the most cost effective way to get purified potassium hydroxide, from hard wood ashes or am I just better off buying my lye at a store. I'm a cheap skate, that's why I want to know.
James Slater uLtrasonic cleaner and diluted or deionized water
James Slater no soap at all added when cleaning said impurities
James Slater no heat either
actually you needed more water. the 1/5 thing only works for aluminum nitrate nonahydrate. for potassium nitrate you need 1/3 its weight in water.
Very good video! Could you explain the purification and recrystallization procedure if it is not a problem? I have kclo3 obtained from sodium hypochlorite! Thank you in advance!
السلام عليكم
@NurdRage What means 90 % purity? For some tecnical chemicals like sulfuric acid are 90 % purity. I have technical grade H2SO4 and i did titration and it was 95 %. how then it is 90 % purity if it contains 95% H2SO4? Other is water.
Does that inpurity is 10 % of that 5 % that contains water in this case?
Would this work if you are trying to purify capsaicin?
thx! very good video!! keep it up!
there is still liquid coating the crystals, even after the second purifying step. i think that one will not get rid of impurities unless one gets rid of the liquid phase. could you get rid of that by washing the crystals in a filter with some ethanol or isopropanol?
Spoken like a true 2weaker. Lol JK jk
I followed these direction perfectly
In that case my *scnr* applies. If it still has (ionic) contaminants, it is not completely deionized. Note that the copper could also get into the water from the used reaction vessels, spatula, piping, etc., not necessarily be in the water in the first place.
سلام ایا شما طرز تهیه کوکایین در منزل را بلد هستید؟؟
i want to ask if i want to make 100kg kclo3 what steps should i do?
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interesting and informative video
Being taught by Hulk Hogan about recrystallization..... Priceless lol.
Yeah brother!
Who Knew Terry Does Science stuff too.(Thats a Great lol.)
Look Brother ! I'm going show how to recryatalize
Which method should be used to purify sodium nitrate?
Thanks for help
That would be something I'd like to do after the Army. I'm 18, and plan on going through college afterwards. I'm good with math and chemistry (organic as well). Any suggestions for classes or majors to take special interest in?
Thanks
Sheesh
@Pipewing
Generally, the slower the recrystallization is done, the purer it is.
Sometimes you can come across the solubility tables in the literature, other times you just have to try it yourself. :)
could you please tell me how much water i need for 100 gramms of bariumnitrat....and how can i find out how many water i need.....thanks
I've done a similar process with acetone,
Started with 1.5G and ended up with 430MG of pure product.
What were you recrystallizing?
Loolol
😂
Acetone will take out the junk
I have a question that really want it to be solved as i cant find its solution.
Can the slow evaporation recrystallization process be done normally under heating to make it evaporate faster?
+ROCKET&SCIENCE EXPERIMENT he said he cant because the extra energy of the heat causes an effect that effects the solubility stablizing teh amount that will dissolve in differing temps, and my guess is that there is a temp where it will change but that will either be over boiling temp requiring a pressurized vessel or will cause the salt to thermally decompose, or take on atoms from the water. destroying your salt too.
can it be smoked like crystal?
Can you purify sodium acetate by recrystallization?
Would this prossess work with cladestine made ketamine hcl
After heating, placing the heated solution in the beaker into a styrofoam or insulating container will yield larger crystals but will take longer to cool.
التعليق،قبل عشر،سنوات،،،الله يعلم ميت عدل😲😳
@@Hasn-Aml890 أي هسه لكيت كلشي
@@sozana_7 زين إذا نجحتي،بالتجربه،ذكريني،بحصه،منه،هههههه
Bill Nye meets Walter White
I love that!!
Awesome video.thanx
This may sound silly, but I'd like to ask anyways.
Does this work with any water soluble compounds? For example, NaCl, KCl, or even NaOH. Thank you!
Kovu Legar I think it should work for most things in most solvents, as it has to do with crystal formation and solubility. You'll need to look at the individual things though.
For example, heat doesn't help with NaCl as solubility doesn't change over heat, so you need to rely on solvent evaporation rather than temperature changes to cause it to crystalize.
+Kovu Legar fractional recrystalzation is the term you are looking for here, the reason it works is cause as the soluble holding of the liquid changes and the salts all have preferred solubility so one salt will completely precipitate out before the others do, you just have to keep changing the quantity storage of the solvent and when you see precipitate, filter off, not sure why he did not mention this, but the purification process is used for the stuff still dissolved in liquid that sticks to the crystals since you cant wash it off or it will dissolve with water, you would have to switch to something that is mincible with the solvent, but the salts you want are not soluble in, so repeating the process with the recrystalized material in fresh distilled solvent increases purity again, (since each time less liquid per crystal surface is available, and the content in the liquid drops too. :)
is it possible to use the recrystallization method on pottasium nitrate and sulfur?
Whoa there buddy :o
I have a question. If you synthesize Mercury (II) Fulminate and you get a powdery sort of yield, can you crystallize it by dissolving it in ethanol,and using the same methods as you demonstrate in the video? I understand that Fulminated Mercury's autoignition point is at 180 degrees Celsius. What should I do? I would really appreciate any sort of reply
Do you snort it? What am I watching. This played after another video I was watching
@@BennettStevens22 good question
You are good man.
"Let them birds take a bath and if they come out Cleannnn"-Future
Can i vacum filtrate and dy of vacum instead of dessicator bag?
but I apologize if i am being a nuisance, but is there a table with this kind of information on recrystallizing or you just know this information based on experience?
Would further dissolving and recrystalization bring more purity or is there a plateau effect?
"This guys got the knowledge, man. He's... he's the man. Few people have what this guy has. He's like a gold mine."
Spyder Mike
Have you seen
Hi thanks a lot; your videos are helping me to finish my thesis actually I´m recovering metallic manganese from spent batteries but I have some questions How long does it take to recistalize MnSO4 ? and How much do I have to boil the solucion up (in percentage)? I´ll be waiting your answer.
Are you still waiting?
@@jonross377 I'm curious I think I will wait too, gotta run to the store hope I don't miss sumthin
😂@@planeiron241
What in the Walter White is goin on here?
Reach out
Gente, cola na grade! Tô chegando agora, isso que está sendo purificado é Cloreto de potássio ou Salitre? Obrigado companheiros!
pq ta comentando em português?
Does it put the lotion on its skin?
So being tottaly serious, cai i use this to puify lye? cause i got the drano crap and i heard its not bery concerntrated. Please answer..any one.
Can you rewash using just water?
i was already planning a few more combustion videos (including kno3) but i've seen channels taken down because they showed that sort of thing. i guess we'll just have to see.
How can I purify ketamine Crystal?
Just found a presentation for my sons 5th grade science class. Thanks for the video
t88boost they use this with methamphetamines
We did this in 2nd grade.
This is how you make rock candy.
Just put a stick in it and you can grow a giant jagged lollipop.
@@TheBrunswicksfinestIs that where the crystal in crystal meth comes from?
Im curious could this method be use to extract Thc from plant matter and then crystallize it.
Most potheads just spray lighter fluid through plant matter, then smoke the crap that gets dissolved and shoved through.
They call it "butane honey oil" if I recall.
Is it work with RO water?
Where are you man?
I've missed your videos
surely there is a solvent that will only specifically dissolve the NH4NO3 and won't dissolve those specific impurities, ya? Wouldn't that be better than losing all that product?
Is that machine measuring? Boiling, Vibrating or what?
wow amazing
~3:00 it's funny that the first process was added 10ml(20%) and after 6.6ml
You can see clearly the mass loss
If I may know what material is that, sir?
May I discover the compound, Sir
ok I think I missed part of what I was looking for here, in that I expected FRACTIONAL recrystallization. but this is not very clear as to showing this process, where maybe a mixture of several salts (like sodium chloride and potassium chloride,) were used to show the two different salts in their stages due to their varying solubility rates, causing one to precipitate out before the other, and each stage a method of identifying each salt as well as the batch where the last of one was precipitated and first of the next salt began precipitating out. (like using a UV lamp to effect the compounds maybe so it might take different salts for good clean clear easy to tell differential color fluorescing to show the different salts)
👆👆look up that handle, he ships swiftly, and he got shrooms, Dmt, lsd, mmda, psilocybin, adderall, morphine, edibles, fentanyl, cubensis, meth, gummies, SSRI, chocolate bars, he's got a lot.. 🍄 💊🍄🍫💯🔌
👆👆look up that handle, he ships swiftly, and he got shrooms, Dmt, lsd, mmda, psilocybin, adderall, morphine, edibles, fentanyl, cubensis, meth, gummies, SSRI, chocolate bars, he's got a lot.. 🍄 💊🍄🍫💯🔌
@vanessa jones sells what? sorry but you lost me. I was talking about the methods for identifying things and how to get them sorted by solubility reluctance like the temp for condensing various chemicals from vapor,
Interesting stuff
This works for caffeine?