... Fe,20% 2)package,25kg/bag 3)Usage, additives,fertilizer,water scavenging agent iron sulfate heptahydrateMolecular Formula: FeSO4·(X) H20 ... monohydrate (65°C).In wet air it will be oxidated to basic ferric sulphate.Soluble in water and glycerol, insoluble in ... iron oxide red and indigo-blue; as mordant ,tanning agent,water scavenging agent,wood preservative,disinfectant and heliograph etc.as fertilizer ...