Boron nitride

Properties

General

Name Boron nitride
Chemical formula B N
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

Δ_fH⁰_gas 476.98 kJ/mol
Δ_fH⁰_solid -250.91 kJ/mol
S⁰_{gas, 1 bar} 212.36 J/mol·K
S⁰_solid 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.