Zinc sulphate

About Zinc sulphate

• Chemical formula: ZnSO. There are various hydrates: commonly monohydrate (ZnSOHO) and heptahydrate (ZnSO7HO).

• CAS numbers:

  • Monohydrate: 7446-19-7

  • Heptahydrate: 7446-20-0

• Molecular weights:

  • Monohydrate: ~179.45 g/mol

  • Heptahydrate: ~287.54 g/mol

• Appearance: Typically a white (or colourless) crystalline solid / powder.

• Solubility: Freely soluble in water (varies by form/hydrate).

• pH (of a ~5% aqueous solution) falls in approximate range ~4.0 6.0 depending on grade/hydrate.