Colours made from ammonia
5 colours that our sources say are made from ammonia.
Brown
Aniline
A colourless oil that darkens with air and launched the first synthetic dyesPigment · 🇩🇪 Germany
Purple and violet
Orcein
A reddish dye made from lichens, changing colour with acidityDye · 🇳🇴 Norway +4
Blue
Indigoidine
A blue pigment made by certain bacteria and studied for its unique colourPigment
Purple and violet
Murexide
A purple chemical once used as a dye and indicator in chemistryPigment · 🇩🇪 Germany +1
Blue
Azuline
A blue synthetic dye from coal tar, used for silk in the 1860sDye
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Orcein: W.carter, CC0, source
- Indigoidine: Mephisto spa, Public domain, source
- Aniline: Smokefoot, CC BY-SA 4.0, source
- Murexide: Shaddack, Public domain, source