... heptahydrate 1)FeSO4.7H2O%,98%;Fe,20% 2)package,25kg/bag 3)Usage, additives,fertilizer,water scavenging agent iron sulfate heptahydrateMolecular Formula: FeSO4 ... ferric sulphate.Soluble in water and glycerol, insoluble in alcohols.-------------------------------------------------------------------------------------------------------------------------------------------------------------Usage: Ferrous ...