... MgCl2 reacting with NaOH to obtain high purified Mg(OH)2. Guarantee 98.5% purity, or even ... flame retardants, used to produce light weight high-purity magnesium oxide, heavy magnesium oxide of high purity, pharmaceutical grade magnesium oxide, food ... grade magnesium oxide, silicon steel grade magnesium oxide and other high-end magnesium oxide products, but also used as a flue gas ...