Prussian
PB27
Prussian Blue
Berlin blue or Paris blue has dark blue opaque crystals. It was the first modern synthetic pigment.
- Code: PB27
- Chemical names : inorganic iron (III) hexacyanoferrate (II), ferric ammonium ferrocyanide
- Formula: C18Fe7N18
- Permanence: very lightfast
- Opacity: semi-opaque