Calcium oxide for india market CaO+MgO >93% CaO 91.0% MgO 1.9 The specification of calcium oxide Item No.Inspect ItemStandardResult1CaO>=8692.972MgO<1.21.053SiO2<1.50.274As 0.75Pb 1.9 The usage of calcium oxideCalcium oxide is widely used in paper making, plastic, plastic film, fiber, rubber, adhesives, sealants, household chemicals, cosmetics, building materials, paint, ink, construction, ...