-Purity quotient:99.9%
-Mohs' scale of hardness:9
-Grain diameter:15-60micron
-Isotopes:B10, B11

Physical Property of Boron

Symbol of element BRelative atomic mass 10.82Isotopes B10, B11Density amorphous boron2.3g/cm3Melting point 2300°CBoiling point 2550°CLatent heat of vaporization 481482 j /molSpecific heat capacity 1.2941398j/gLinear expansibility 2×10-6 When it is heated from 0°C to 600°C, the electrical conductivity increases 100 times.

Mohs’ scale of hardness  less than or equal to9