nature : the white side ramps or crystal powder. 2.566g/cm3 density. The temperature> 15 ° C. Soluble alcohol, hydrochloric acid, concentrated nitric acid and alkali, do not dissolve in water. The 580 ° C relatively stable. 1400 ° Cnot melt and become gelatinous body. At room temperature to 1200 ° C, and four crystal, it is common for α-. From thick with sodium aluminum phosphate activity. Can also be used trisodium phosphate and aluminum sulfate decomposition Minute obtained. The special glass used in a flux, ceramic teeth and the binder, and the production of emollients, fire coatings, conductive additives such as cement, textile industries and Antipollution agent. Also used in the pharmaceutical and so on.