... -hydrate are generated after anhydrous disodium phosphate is absorbing water from moist air.Uses:Used as fire retardant of ... textile, wood, and paper, water softening agent of boiler, dyeing agent, buffering agent, glaze ... and sodium pyrophosphate. In food industry, it is used as quality improver, emulsifier, and nourish-supplement agent, fermentation adjunct, and binder. ...