... % 2)package,25kg/bag 3)Usage,Feed Minerals&Trace elements Ferrous sulfate monohydrate Molecular Formula: FeSO4·H20 Molecular Weight: 169.01Properties ... : Ferrous sulfate monohydrate is offwhite powder . Use:1)manufacture iron salts, ink, iron oxide red and indigo ... witg plastic lining,or according to your requirements. Hot sale!! Ferrous Sulphate Monohydrate