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Potassium Dichromate Crystals

Potassium dichromate is one of the few compounds that produces natural orange crystals. You can grow these in a lab, but I wouldn't use a chromium compound at home because of its toxicity.


Polychrome glass cup, Period: Egypt, New Kingdom, Dynasty 18. 1370–1335 BC. Egypt, Middle Egypt, El-Amarna [Akhetaten]


60. The standardisation of sodium thiosulphate with potassium dichromate

from BuzzFeed

The 27 Most Impressive Chemical Reactions

Ammonium dichromate looks pretty cool when you burn it: | The 27 Most Impressive Chemical Reactions

from Alpenglow Yarn

Mordants and Natural Dyeing, The Great Debate

I've thought about writing this post for a while. This topic, more than anything else in natural dyeing, brings up emotion and occasional controversy. My goal with this post is to present some fact...