TiO2 rutile,spec: TiO2: 93% min. Tint-reducing power: 100 min. Volatile constituents at 105 centigrade degree: 0.8% max. Resistivity of water liquid extract(om.m): 50% min. PH: 6.0~8.0 Oil absorption: 23% max. Redidue on 325 mesh: 0.1% max. Rutile content: 97% min. Packing: in 25 kgs bags.