Colours made from sulfuric acid
3 colours that our sources say are made from sulfuric acid.
Green
Malachite green
A synthetic green dye once common for silk, now controversial in aquacultureDye · 🇨🇳 China +3
Purple and violet
Mauveine
A purple dye first made by accident in 1856, launching the synthetic dye industryDye
Blue
Azuline
A blue synthetic dye from coal tar, used for silk in the 1860sDye