Zinc sulfate heptahydrate ke motsoako oa inorganic o nang le foromo ea molek'hule ea ZnSO4 7H2O, e tsejoang ka hore ke alum le zinc alum.Likristale tse se nang 'mala tsa orthorhombic prismatic crystal zinc sulphate Zinc Sulphate Granular, phofo e tšoeu ea kristale, e qhibilihang ka metsing, e qhibilihang hanyane ka har'a ethanol.E lahleheloa ke metsi ha e futhumatsoa ho 200°C mme e bola ka 770°C.