3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||41.7855 g/mol|
|Melting point||1,100 °C (2,010 °F; 1,370 K) (decomposes)|
|Band gap||2.1 eV (indirect, 300 K)|
|Thermal conductivity||4.6 W/(cm·K) (300 K)|
Refractive index (nD)
|3.0 (0.63 µm)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|(what is ?)|
Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red.
BP is not attacked by acids or boiling aqueous alkali water solutions. It is only attacked by molten alkalis.
BP is known as a material to be chemically refractive and have a very high thermal conductivity. Some properties of BP are listed below: