Potassium Ferricyanide is available with red crystals [dimorphic] or lemon-yellow crystals chemical properties. It is light sensitive. Yoyo Chemicals manufactures Potassium Ferricyanide.
Yoyo Chemicals also manufactures wide range of salts of persulphate and thiocyanates. Potassium Ferricyanide is stable and makes reaction with acids yields toxic gas. It is incompatible with ammonia, strong acids, strong oxidizing agents. The chemical comes with 1.85 density range.