MgO Magnesium Oxide Light 1,CAS No.:1309-48-4 2,EINECS No.:215- ... AdvantageCompetitive PriceFast delivery timeHigh quality guaranteed Magnesium Oxide 1,CAS No.:1309-48-42,EINECS No.:215-171-9 ... 825, the relative density 3.58, soluble in acid or ammonium salt solution, insoluble in water , the ethanol, the ether, ... medicine, dye, glass etc. industry. MgO Magnesium Oxide Light CAS: 1309-48-4 95% 93% 92%