... on the ground. As technology advances, more extensive use of magnesium oxide. Magnesium oxide is making firecrackers firecrackers special materials ... ) commonly known as magnesite, calcined powder, magnesium oxide powder. Density of 2.94, a white powder. Melting point 2852 °C, ... , insoluble in water and ethanol. Calcination temperature of 400 °C, the surface area of 180m2 / g. 1300 °C, the surface ...