Prussian

PB27

Prussian Blue

Berlin blue or Paris blue has dark blue opaque crystals. It was the first modern synthetic pigment.

1. Code: PB27
2. Chemical names :  inorganic iron (III) hexacyanoferrate (II), ferric ammonium ferrocyanide
3. Formula: C18Fe7N18
4. Permanence: very lightfast
5. Opacity: semi-opaque