... White powder, nonpoisonous, nearly insoluble in water, alcohol, and acid, excellent stability, moderate hardness, high luster, h Barium Sulphate Superfined ... Chemical formula: BaSO4Molecular Weight: 233.33Appearance: White powder, nonpoisonous, nearly insoluble in ... , rubber, glass, cosmetics, frictional materials, etc. Barium Sulphate Superfined