Ferric Ammonium Citrate is also known as Ammonium Ferric Citrate, Ammonium Ferric Citrate, Ammonium Ferric Citrate.Ferric Ammonium Citrate is also known as Ammonium Ferric Citrate, Ammonium Ferric Citrate, Ammonium Ferric Citrate. It is of Synthetic origin. . The Molecular Weight of Ferric Ammonium Citrate is 279.99.