white Calcium oxide for building materia CaO+MgO >93% CaO 91.0% MgO 1.9 The specification of calcium oxide Item No. ... 972MgO<1.21.053SiO2<1.50.274As 0.75Pb 1.9 The usage of calcium oxideCalcium oxide is widely used in ... plastic, plastic film, fiber, rubber, adhesives, sealants, household chemicals, cosmetics, building materials, paint, ink, construction, smelting, alumina, culture, food, water factory ...