Crystal

BN (%)

B2O3 (%)

C (%)

Total 
Oxygen (%)

Si, Al, Ca
(%)

Cu, K, Fe, Na, 
Ni, Cr (%)

D50

Crystal Size

BET 
(m2/g)

Tap Density
(g/cm3)

Hexagonal

99

<0.5

0.1

<0.8

<30ppm
each

<10ppm
each

40-60μm

<12μm

5-12

0.4-0.6