Calcium carbonate: Difference between revisions
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Revision as of 17:20, 8 May 2004
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General |
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|---|---|
| Name | Calcium carbonate |
| Chemical formula | CaCO3 |
| Appearance | White solid |
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Physical |
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| 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 |
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Thermochemistry |
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| ΔfH0liquid | -1154 kJ/mol |
| ΔfH0solid | -1207 kJ/mol |
| S0solid | 93 J/mol·K |
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Safety | |
| 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. | |
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: