ʻO Zinc sulfate heptahydrate he mea hoʻohuihui inorganic me kahi ʻano molekala o ZnSO4 7H2O, i ʻike mau ʻia he alum a me ka zinc alum.ʻAʻohe kala ʻeleʻele orthorhombic prismatic crystal zinc sulphate crystals Zinc Sulphate Granular, pauda crystalline keʻokeʻo, hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i ka ethanol.Pau ka wai i ka wela a hiki i 200°C a pau i ka 770°C.