Ferrous Fumarate in Powder Form has an iron content of 32.87% and is used to supplement iron intake. Ferrous Fumarate is available in reddish orange to reddish brown coloured fine powder form. Ferrous Fumarate contains assay in a range of 93% to 101.0 % w/w on dry basis. Ferrous Fumarate in Powder Form consists of ferric ion in a range of less than 2.00 %.