Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which is a type of sedimentary rock consisting mainly of calcite) and is the main component of eggs, snail shells, seashells and pearls. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause poor digestion.

As an ingredient of cement
Purification of iron
In oil industry
As extender in paints
Other

Minimum Assay: >96.8%
Molecular Formula: CaCO3
Molecular Weight: 100.9
Melting Point: 800°C
Refractive Index: 1.6583
HCL Insoluble content: <2.3%
Passing 45 um: 99.6%
D50: 3um

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 471-34-1
Einecs No: 207-439-9