... farming, building material,environmental,feed and pharmaceutical 1.Specification of Light Magnesium Oxide 65% ITEM RESULTPURITY (MgO) 60.00% - ... % Other Materials 23.0 co%2.Main Application:Light magnesium oxide is mainly used for preparation of ceramics, ... enamel, refractory crucibles , rubber, plastic, wire, cable dyes, paints, glass, chemicals, pharmaceuticals and so on . 3 ...