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| General | |
|---|---|
| Name | Boron nitride |
| Chemical formula | BN |
| Appearance | White solid |
| Physical | |
| Formula weight | 24.8 amu |
| Boiling point | sublimes at 3273 K (3000 °C) |
| Density | 2.2 ×103 kg/m3 |
| Crystal structure | zinc blende or layered |
| Solubility | insoluble |
| Thermochemistry | |
| ΔfH0gas | 476.98 kJ/mol |
| ΔfH0solid | -250.91 kJ/mol |
| S0gas, 1 bar | 212.36 J/mol·K |
| S0solid | 14.77 J/mol·K |
| Safety | |
| Ingestion | Classified "not hazardous" |
| Inhalation | ? |
| Skin | ? |
| Eyes | ? |
| More info | ? |
| SI units were used where possible. Unless otherwise stated, standard conditions were used. | |
Boron nitride is a binary chemical compound, consisting of equal proportions of boron and nitrogen, with composition BN. Structurally, it is isoelectronic to carbon and takes on similar physical forms: a graphite-like one, and a diamond-like one. The latter is the only material nearly as hard as diamond. It is widely used for grinding and as material for tools in industry.
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