Tricalcium phosphate
From Freepedia
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General |
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|---|---|
| Name | Tricalcium phosphate |
| Chemical formula | Ca3(PO4)2 |
| Appearance | White amorphous powder |
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Physical |
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| Formula weight | 310.18 amu |
| Melting point | Liquifies under high pressure at 1670 K (1391 °C) |
| Boiling point | N/A |
| Density | 3.14 ×103 kg/m3 |
| Solubility | 0.002 g in 100g water |
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Thermochemistry |
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| ΔfH0liquid | -999.8 kJ/mol |
| ΔfH0solid | -982.3 kJ/mol (alpha form) |
| -984.9 kJ/mol (beta form) | |
| S0solid | 57.58 J/(mol·K) (alpha form) |
| 56.4 J/(mol·K) (beta form) | |
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Safety | |
| Ingestion | Causes irritation to the gastrointestinal tract. |
| Inhalation | Causes irritation to the respiratory tract. |
| Skin | May cause skin irritation. |
| Eyes | May cause irritation and damage to the cornea. |
| More info | Hazardous Chemical Database |
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SI units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references | |
Tricalcium phosphate is a chemical compound, with chemical formula Ca3(PO4)2. It is also known as tertiary calcium phosphate, tribasic calcium phosphate, or "bone ash" (calcium phosphate being one of the main combustion products of bone).
It has an alpha and a beta crystal form, the alpha state being formed at high temperatures.
It is commonly used in porcelain and dental powders, and medically as an antacid or calcium supplement, although calcium carbonate is more common in this regard.
As rock, it is found in Whitlockite.
