2.Heavy magnesium oxide as a white powder; odorless, tasteless; in the air can slowly absorb carbon dioxide. Almost insoluble in water, insoluble in ethanol, dissolved in acid.
3.Light magnesium oxide as a white, amorphous powder, odorless, nontoxic, specific gravity of 4.58 (25), the melting point of 2852, the boiling point of 3600, slightly soluble in water and organic solvents, soluble in acid or salt solution, formula MgO, molecular weight 40.31.
5.Light magnesium oxide used in metallurgy, smelting, Senior brick, refractories and moisturizing materials manufacturing, is also widely used in rubber, rubber sheet, rubber, pharmaceutical industry, food industry, plastic sheet accelerator, plasticizer FRP and the silicon surface coating paint, paper production, ball polishing, leather processing, insulating materials, grease, dyes, ceramic, desiccant, resins, flame retardants