... will lose water of crystallization. It is a monoclinic crystal, salty and corrosive. Used for making magnesium metal , disinfectant, frozen brine ... and also used as a raw material of antifreeze. (2)Metallurgical industryIn the metallurgical industry, it is used for the production of ... chlorine and high purity magnesia, etc. It is used for the manufacturing of refractory materials, stove arms, adhesive ...