Al₂O₃(Dry basis, %): 85±2.0

B₂O₃(Dry basis, %): 13±1.0

Length(μm): 10-60

Diameter(μm): 0.3-3.0

L/D Ratio: 20-80

Density(g/cm³): 2.93

pH: 6.5±0.5

Melting point(°C): 1440

Moisture(%): ≤0.5

Mohs hardness: 7