Calcium Sulphate

Calcium sulphate is an inorganic white solid with the formula CaSO4. It occurs naturally as a mineral and is also produced synthetically, often as a by-product (e.g. from desulphurisation). The compound exists in three levels of hydration: anhydrous (as mineral anhydrite), dihydrate (gypsum or as mineral selenite) and hemihydrate (Bassanite or plaster of Paris).All forms are poorly soluble in water and cause permanent hardness in water.

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Gypsum, E516, Plaster of Paris, Anhydrite, Selenite, Alabaster
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CaSO4
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7778-18-9 (anhydrous), 10034-76-1 (hemihydrate), 10101-41-4 (dihydrate)

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172.17 g/mol (dihydrate)
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1,460°C (anhydrous)
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non flammable
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2.32 g/cm³ (dihydrate)
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Powder, White, Solid

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  • Food additive
  • Oil and Gas
  • Agricultural
  • Pharmaceuticals
  • Animal feed
  • Cosmetic products
  • Building & Construction products

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  • Pharma
  • Agriculture
  • Animal Nutrition
  • CASE & Construction
  • Beauty & Personal Care
  • Food & Nutrition
  • Energy Services