Zinc Sulphate

Zinc sulphate is the zinc salt of sulphuric acid. Zinc sulphate is a white powder, its hydrates (mono-, hexa- and heptahydrate) are colourless solids. Zinc sulphate is produced by treating zinc-containing materials (metal, minerals, oxides) with sulfuric acid


Molar Weight179.47 g/mol (monohydrate)|287.53 g/mol (heptahydrate)
Melting Point100°C (heptahydrate), 70°C (hexahydrate, decomposes)
Boiling Point280°C (heptahydrate, decomposes)
Density3.54 g/cm³ (anhydrous),3.2 g/cm³ (monohydrate),2.07 g/cm³ (hexahydrate),1.97g/cm³ (heptahydrate)
FormsPowder, White, Colourless

Uses and Applications

Key applications

  • Nutritional supplements
  • Preservative
  • Etching & Engraving
  • Micronutrient


  • Pharma
  • Mining
  • Water Treatment
  • Food
  • Animal Nutrition
  • Agrobusiness

Synonyms: zinc(2+) sulfate

Chemical Formula: ZnSO4 * H2O

CAS Number: 7733-02-0 (anhydrous), 7446-19-7 (monohydrate), 13986-24-8 (Hexahydrate), 7446-20-0 (heptahydrate)