Colours made from hydrochloric acid
3 colours that our sources say are made from hydrochloric acid.
Purple and violet
Crystal violet
A synthetic purple dye used in science, medicine, and industryDye
Orange
Solvent Yellow 14
An orange-red azo dye once used in food, now banned for food and textilesPigment
Red
Scarlet GN
A synthetic red azo dye once used in foods and now mainly in cosmeticsDye · 🇺🇸 United States +4
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Crystal violet: Richard Masoner, CC BY-SA 2.0, source
- Solvent Yellow 14: Jürgen Martens, Public domain, source