SMILES: [O-]S(=O)(=O)[O-].[Fe+2]
Description: The molecule is a compound of iron and sulfate in which the ratio of iron(2+) to sulfate ions is 1:1. Various hydrates occur naturally - most commonly the heptahydrate, which loses water to form the tetrahydrate at 57℃ and the monohydrate at 65℃. It has a role as a reducing agent. It is a metal sulfate and an iron molecular entity. It contains an iron(2+).