This standard specifies the product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage of industrial sodium tripolyphosphate. This standard applies to industrial sodium tripolyphosphate manufactured from thermal process phosphoric acid or extracted phosphoric acid. This product is mainly used as an auxiliary agent for synthetic detergents, and can also be used in industries such as petroleum, metallurgy, and mining water treatment. Molecular formula: Na5P3O10; Molecular weight: 367.86 (according to the international atomic weight in 1985).