Ferric Ammonium Citrate

used for water purification and as a reducing agent of metal salts of low activity like Gold and Silver.

a light-sensitive iron salt used with Potassium Ferricyanide, for making Cyanotype solution. It is Part B of the 2 part chemistry required for Cyanotype. a key ingredient in creating a high-quality Cyanotype solution. As part of the two part chemistry process, it works together with Potassium Ferricyanide to produce beautiful, light-sensitive prints.