Boron nitride

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.

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