Boron nitride
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Properties

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. Disclaimer and references

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.

The original article can be found at: http://en.wikipedia.org/wiki/Boron_nitride.
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