... in air,when heated to 120°C,it loses crystal water.Quality standard: Name of indexGB1889-2004FCC-IVAppearanceWhite powderWhite powderContent(As CaHPO4 ... .005≤0.005Acid-insoluble Substances,%≤0.05---USES:In food industry,it used as bulking agent,flour improver, swelling agent and ... quality improvers for flour,cake,pastry,biscuit. In medicine industry, it is used to make calcium tablets, or as troche ...