Content of BaSO4 95% min Volatile matter at 105â 0.5% max Water Soluble Matter 0.3% max PH Value at 23â 6.5~9.5 Residue on 45mesh 0.2% max Oil Absorption 15~30 g/100g Packing: In 25kg/1000kg bag Application: used as white pigment, filling of paper and rubber, and medical use. Storage and Transport: Stored in dry and cool place, far away with kindling and heating source. Prohibit storing and mix-loading with reducing agent and combustible. Avoid being insolated or under high temperature when transporting.