Science Fair Project Encyclopedia
Sodium nitrate
|
General |
|
|---|---|
| Name | Sodium nitrate |
| Chemical formula | NaNO3 |
| Appearance | White powder or colorless crystals |
|
Physical |
|
| Formula weight | 85.0 amu |
| Melting point | 580 K (307 °C) |
| Boiling point | decomposes at 653 K (380 °C) |
| Density | 2.3 ×103 kg/m3 |
| Crystal structure | ? |
| Solubility | 92 g in 100mL water |
|
Thermochemistry |
|
| ΔfH0liquid | -452 kJ/mol |
| ΔfH0solid | -468 kJ/mol |
| S0solid | 117 J/mol·K |
|
Safety | |
| Ingestion | Very dangerous, possibly fatal. |
| Inhalation | Similar to ingestion. |
| Skin | May cause irritation. |
| Eyes | May cause irritation. |
| More info | Hazardous Chemical Database |
|
SI units were used where possible. Unless otherwise stated, standard conditions were used. | |
Sodium nitrate is a type of salt which has long been used as an ingredient in explosives, and has been mined extensively for that purpose. The world's largest deposits were in the Atacama desert of Chile, and these were mined for over a century, until the 1940s.
It has antimicrobial properties when used as a food preservative.
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10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details