200 Mesh A Grade Suitable whiteness, low contents of harmful impurities, low price, widely used in ceramic floor tiles & wall tiles, low & medium grade ceramic industries. The specification is as follows: SIO2: 52% max. AL2O3: 31% FE2O3: 0.5% max. Na2O: 0.30% max. K2O: 3% max. CaO: 0.05% max. TiO2: 0.05% max. MgO: 0.35% max. MnO: 0.02% max. Natural Whiteness: 76 Fired whiteness: 82 Loss of ignition: 12.5 PH: 5.5~6.5 325 Mesh residue: 1.0% max. Moisture: 15% max. ***Above content only for reference. ***Packing: 25KGS / 40KGS / 50KGS / 1000KGS net in plastic woven bags, or customers option. *** Process covering products according to customers requirements. Welcome your inquiry for further details! We will supply our best goods & service to you. Thanks & best regards!