Ammonium ferric citrate

Ammonium ferric citrate (Cas No:1185-57-5, Einecs No.:214-686-6) is a green or reddish-brown powder which is very soluble in water. Ammonium ferric citrate has a slight ammonia odor.

Ammonium ferric citrate is also known as: Ammonium Iron(III) Citrate; Ammonium ferric citrate; Iron ammonium citrate; 2-Hydroxy-1,2,3-Propanetricarboxylic Acid, Ammonium Iron (3+) Salt; Prothoate+; and Iron (II) ammonium citrate

Ammonium ferric citrate is used as an additive in the Scottish soft drink Irn-Bru. Other uses for ammonium ferric citrate include water purification and printing.

The chemical formula of Ammonium ferric citrate is C6H8O7.nFe.nH3N This compound is used as a reducing agent of metal salts of low activity like gold and silver

This Chemical is also in a commonly used recipe with potassium ferricyanide to make cyanotype prints.