Property: White powder; soluble in concentrated hydrochloric acid; does not dissolve in normal organic acid, mineral acid, alkali solution and water. BaSO4 98%min Water Soluble 0.016%max Acid Soluble 0.042% max Iron(Fe) 0.003% max SiO2 0.162% max Moisture 0.15% max PH 6.9 max Oil absorption 11.6% max Particle sizeMesh 400 82 % min Usage: Mainly used in paint, coating and resin industries Packing: 25kg/bag, 1000kg/bag