... pharmaceutical 1.Specification of Light Magnesium Oxide 65% ITEM RESULTPURITY (MgO) 60.00% - 65.00 %SiO2 8.50%Al2O3 1.10 ... for preparation offertilizer , ceramics, enamel, refractory crucibles , rubber, plastic, wire, cable dyes, paints, glass, chemicals, pharmaceuticals and so on . 3.Our ... .Our products have high quality and best price. Magnesium Oxide (MGO)