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.

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