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Calcium carbonate



Name Calcium carbonate
Chemical formula CaCO3
Appearance White solid


Formula weight 100.1 amu
Melting point Liquifies under high pressure at 1612 K (1339 °C)
Boiling point decomposes at 1172 K (899 °C)
Density 2.7 ×103 kg/m3
Crystal structure Calcite or aragonite
Solubility 0.0013 g in 100g water


ΔfH0liquid -1154 kJ/mol
ΔfH0solid -1207 kJ/mol
S0solid 93 J/mol·K


Ingestion Low hazard for accidental injestion.
Inhalation Low hazard, may cause problems in the long term.
Skin Low hazard.
Eyes Low hazard.
More info Hazardous Chemical Database
SI units were used where possible. Unless otherwise stated, standard conditions were used.

Disclaimer and references

Calcium carbonate is a chemical compound, with chemical formula CaCO3. It has common use as an antacid.

It is a common substance found as rock in all parts of the world and is the main component of seashells and the shell of snails.

As rock, it is found in the following states: