purity: 46% origin: Shandong, China appearance: white or yellowish flakes good quanlity and best price CRETIFICATE OF ANALYSIS Analysis ... Chemical industry: mainly used for production of magnesium salt, such as magnesium oxide, magnesium hydroxide, magnesium carbonate, also used as raw material of ... of vehicles, corrosive small, higher than the effect of sodium chloride. magnesium chloride(46%)