Calcium Carbonate

Calcium carbonate is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone) extracted by mining or quarrying as so called Ground Calcium Carbonate (GCC). Alternatively, calcium carbonate is prepared from calcium oxide. Water is added to give calcium hydroxide then carbon dioxide is passed through this solution to precipitate calcium carbonate, referred to as precipitated calcium carbonate (PCC)


Molar Weight100.086 g/mol
Melting Point825 °C
Boiling Pointdecomposes
Density2.71 g/cm³ (Calcite), 2.83 g/cm³ (Aragonite)
FormsGrey, Powder, White

Uses and Applications

Key applications

  • Baking
  • Adhesives and Sealants
  • Agricultural
  • Household industrial
  • Paint and Coatings
  • Rubber
  • Floor coverings
  • Filler
  • Metallurgy
  • Plastics and polymers
  • Food additive
  • Nutritional supplements
  • Water treatment
  • Oil and Gas
  • Pulp and paper
  • Automotive
  • Personal care
  • Animal feed


  • Pharma
  • Polymers
  • Rubber
  • Water Treatment
  • Chemical Processing
  • Mining
  • Pulp & Paper
  • Agrobusiness
  • Animal Nutrition
  • Cleaning
  • Coatings & Construction
  • Cosmetics
  • Food
  • Lubricants
  • Oil & Gas

Synonyms: Argonite, Calcite, Chalk, Lime, Limestone, Marble, Ground Calcium Carbonate, GCC, Precipitated Calcium Carbonate, PCC, E170

Chemical Formula: CaCO3

CAS Number: 471-34-1