Hexagonal boron nitride is a white loose powder with properties similar to graphite, known as "white graphite". Has good electrical insulation, thermal conductivity, and chemical corrosion resistance. ”The crystal structure of hexagonal boron nitride has a similar graphite layered structure, presenting as a loose, lubricating, hygroscopic, and lightweight white powder, hence it is also known as "white graphite". Theoretical density 2.27g/cm3; The Mohs hardness is 2. Hexagonal boron nitride has excellent electrical insulation, thermal conductivity, and chemical stability