Borax chemical formula Na2 [B4O5 (OH) 4]? 8H2O, borate crystals are monoclinic of minerals. Extraction of mineral raw materials is boron. Also called crude borax borax, is both soft and light colorless crystalline material. Borax is a colorless translucent crystals or white crystalline powder. Odorless, salty taste. Lose all proportion crystal water 1.73. 380 ℃ when. Soluble in water and glycerin, slightly soluble in alcohol. Weakly alkaline aqueous solution. Borax in the air can slowly weathering. Melted into a colorless glassy material. Borax has a bactericidal effect, oral harmful to people. Borax has many uses, such as we are familiar with, such as disinfectants, preservatives, fresh, soft water, wash water, soap additives, ceramic glazes and glass raw materials in industrial production borax also plays an important role. Products in enamel, enamel can not easily fall off and make it shine. In special optical glass, glass fiber, nonferrous metal solder, adhesive jewelry, dyeing, washing (silk and wool, etc.), gold refining, cosmetics, pesticides, fertilizers, soaps borax, preservatives, antifreeze and Medicine with disinfectant, it is also widely used.