Making Cobalt Violet Pigment

Reupload from my Tik-tok
Materials:
-Cobalt salt or cobalt metal and a suitable acid
-Phosphate salt
-Ammonia
Key hazards: Cobalt salts are a suspected carcinogen, nitric acid is corrosive and releases toxic nitrogen oxide gases
Methods: "The manufacture of mineral and lake pigments, containing directions for the manufacture of all artificial artists' and painters' colours, enamel colours, soot and metallic pigments" 1901
#science #chemistry #color #cobalt #purple #violet

[@EddieTheH]

Mmmm... Forbidden parma violets!!!

[@robertosborn2458]

I am making pigments and have seen this done with cobalt chloride, monosodium phosphate, sodium hydroxide and ammonia. Alchemical Art channel

[@Donkusdelux]

criminaly underrated channel

[@integral_chemistry]

Thanks dude! It's growing slowly but surely. Plan to Redo most of my pigment videos soon so stay tuned!

[@spiderdude2099]

Cobalt compounds frequently shift between a pink and blue form due to things like temperature, water of crystallization, and other factors, so I’m not at all surprised that this happened

[@caffeinette]

Excess ammonia could be coordinating to some of your cobalt ions - maybe that is what's resulting in that difference in color?

[@chemistryofquestionablequa6252]

This looks really cool, might make some.

[@integral_chemistry]

Thank you! I actually want to Remake this video because I found that the pigment as I made it here seems indefinitely stable in oil, but lost color in water suspension after about 6 months. I think the heating phase needs to just be longer to allow the pigment to fully stabilize

[@chemistryofquestionablequa6252]

@@integral_chemistry thanks! If I make it I’ll remember to do that.

[@MrYellowOffical]

Hollow Purple

[@FangBoots]

I wanna smoke that

[@uselesschannel51]

real