Ferro Chem Industries supplies Ferric Ammonium Citrate B. P. Ferro Chem Industries is an ISO 14000 registered company that manufactures Pharmaceutical Bulk Drugs and Intermediates. The Ferric Ammonium Citrate B. P. Is used as an acidity regulator. It is used as a reducing agent of metal salts of low activity like gold and silver and is also in a commonly used recipe with potassium ferricyanide to make cyanotype prints.