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Boron nitride

Chemical compound
Boron nitride is a thermally and chemically resistant refractory compound of boron and nitrogen with the chemical formula BN. It exists in various crystalline forms that are isoelectronic to a similarly structured carbon lattice. Wikipedia
Formula: BN
Density: 2.1 g/cm³
Melting point: 2,973 °C (5,383 °F; 3,246 K) sublimates (c-BN)
3D model (JSmol): Interactive image
Appearance: Colorless crystals
Crystal structure: Hexagonal, sphalerite, wurtzite
Molar mass: 24.82 g/mol