Science Fair Project Encyclopedia
Calcium carbonate
Properties
|
General
|
| Name |
Calcium carbonate |
| Chemical formula |
CaCO3 |
| Appearance |
White solid |
|
Physical
|
| 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, aragonite or vaterite |
| Solubility |
0.0013 g in 100g water |
|
Thermochemistry
|
| ΔfH0liquid |
-1154 kJ/mol |
| ΔfH0solid |
-1207 kJ/mol |
| S0solid |
93 J/(mol·K) |
|
Safety
|
| Ingestion |
Low hazard for accidental ingestion. |
| Inhalation |
Low hazard, may cause problems in the long term. |
| Skin |
Low hazard. |
| Eyes |
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