Ferrous sulphate, heptahydrate, GR 99%+ (also ferrous sulphate, green salt, ferrous sulphate) is a divalent iron salt of sulfuric acid.
F 1387 (OTTO) Ferrous sulphate, heptahydrate, GR 99%+ Cas 7782-63-0 - used as a precursor to other iron compounds. F 1387 (OTTO) Ferrous sulphate, heptahydrate, GR 99%+ Cas 7782-63-0 - used in industrial water treatment plants to remove phosphate. It is also used in the gold refining process to precipitate metallic gold.