Thank you for sharing. I find these interesting. So is the need for the lacking process maybe the reason a lot of sets especially budget friendly pencils sets lack a variety of pinks and purples,
Historically, natural true indigo came from boiling the leaves of the Indigofera tinctoria plant and then treating that solution with… stale urine. :) Indigo is a strange natural “dye” - in its blue form, it isn’t soluble in water so can’t be used as a dye and is, technically, a pigment. In order to use it as a dye, dyers had to convert it to “white indigo” (hence the use of stale urine to ferment the solution). White indigo is soluble in water so you could soak cloth in a solution of that. Once you took the cloth out and exposed it to the air, the “white indigo” in the cloth would react to the oxygen in the air and turn blue. How cool is that? :D Nowadays, there are different methods of synthesizing and working with these compounds - no stale urine in our modern blue jeans. :D And yes - the woad plant also contains the same chemical and so can be used to produce indigo, too. :) The Murex snail, which was used in antiquity to produce Tyrian Purple, contains both indigo and 6,6′-dibromoindigo (which is red) - that’s where the purple colour comes from. :)
Inktense are India ink in pencil form, that’s my understanding anyway. I don’t know if that makes a difference. I am very bad at chemistry but I really enjoy your videos. ❤
Ah - that would make sense! Thanks so much for sharing that! :) And you're not bad at chemistry - you just might learn it a different way than is usually taught. :) I'm glad you enjoy the chemistry in my videos!
I love these videos! I was indeed asking myself what the deal was with all the "lake" in colors names :)
So glad you enjoyed it and found it helpful! :)
Fantastic Connie, thank you!! I also never understood the "lake" in color names. Super interesting as always. Thanks again...Loved it!
So glad you found it interesting and useful! :)
Really interesting as always. I hope your holidays are joyous!
Glad you enjoyed it! Happy holidays to you and yours, as well! :)
Fascinating as always, Connie! Thank you so much for explaining this, I always wondered!
You're welcome! :) I'm glad you enjoyed it and found it useful! :)
As someone who had a really hard time, deciding whether not they wanted to pursue organic chemistry or art. This is a great video.
Glad you liked it! :)
I loved this, it was fascinating. I'm glad I found your channel.
So glad you liked it! Thanks for stopping by! :)
Thank you for sharing. I find these interesting. So is the need for the lacking process maybe the reason a lot of sets especially budget friendly pencils sets lack a variety of pinks and purples,
Hmmm... maybe! I'll have to think more about that - maybe it can be part of a future video on modern pigments. :) Thanks so much for chiming in!
Super interesting! Thank you for explaining this :-)
You're very welcome - glad you liked it! :)
Interesting stuff Connie!
Thanks! :)
What does indigo come from?
Originally it came from boiling up plants like Woad
Historically, natural true indigo came from boiling the leaves of the Indigofera tinctoria plant and then treating that solution with… stale urine. :) Indigo is a strange natural “dye” - in its blue form, it isn’t soluble in water so can’t be used as a dye and is, technically, a pigment. In order to use it as a dye, dyers had to convert it to “white indigo” (hence the use of stale urine to ferment the solution). White indigo is soluble in water so you could soak cloth in a solution of that. Once you took the cloth out and exposed it to the air, the “white indigo” in the cloth would react to the oxygen in the air and turn blue. How cool is that? :D Nowadays, there are different methods of synthesizing and working with these compounds - no stale urine in our modern blue jeans. :D
And yes - the woad plant also contains the same chemical and so can be used to produce indigo, too. :) The Murex snail, which was used in antiquity to produce Tyrian Purple, contains both indigo and 6,6′-dibromoindigo (which is red) - that’s where the purple colour comes from. :)
@@colouringchemist Amazing!! Thank you.
Great stuff!❤
Thanks so much! :)
Inktense are India ink in pencil form, that’s my understanding anyway. I don’t know if that makes a difference. I am very bad at chemistry but I really enjoy your videos. ❤
Ah - that would make sense! Thanks so much for sharing that! :) And you're not bad at chemistry - you just might learn it a different way than is usually taught. :) I'm glad you enjoy the chemistry in my videos!