MAGNESIUM OXIDE MGO 90% 200 MESH FOR ABARSIVES (GRINDING WHEELS) It is not the common MgO, It is made for abrasives specially. and it is well used for grinding wheels . The specifications are the following: MGO:90%MIN, SIO2:5.0%MAX, CAO:2.5%max, Fe2O3:1%max, Al2O3:1%max, lOI:5%Max, Size:200mesh passing:90%min PACKING:25 BAG OR 50KG BAG, PAYMENT:TT OR LC SHAPE: POWDER COLOR: LIGHT YELLOW APPLICATIONG: ABRASIVE We can supply other grades of MgO for you .