Chemical formula: BaSO4

Molecular weight: 233.39

Specific gravity: 4.5

Appearance and properties: white rhombic crystal. Relative density: 4.50 (15 ℃)

Melting point: 1580 ℃

Solubility: insoluble in water, alcohol and other solvents, but soluble in hot sulfuric acid.

Main contents (DIN.EN.ISO.3262, PT.2)：98%

Mean grain size D50 (SC. method)：0.70um

Oil absorption (DIN.EN.ISO.787, Pt.10)：20g/100g

Dry brightness (ISO.7724)：>98

PH value (DIN.EN.ISO.787, Pt.9)：7-9

Volatility at 105℃ (DIN.EN.ISO.787, Pt.2)：0.10g/100g

Conductivity S/cm (DIN.EN.ISO.787, Pt.14)：<300