Sodium Dihydrogen Phosphate occurs as two forms: the crystal form (dihydrate) called Sodium Dihydrogen Phosphate (crystal) and anhydrous form called Sodium Dihydrogen Phosphate (anhydrous)
It is used as an acidity regulator and sequestrant in foods. It is used as a pH buffer (baking powders, fleet enema solution, electroplating baths, and acid cleaners), emulsifier, laboratory reagent, metal phosphating reagent, and textile dyeing/printing auxiliary. It is also used to treat boiled water and waste waster and to remove halogen from waste gases. Furthermore, it is used as a cattle feed supplement, as nutritional supplement in food, in dentrifice formulations, in vitreous enamel frits, for the synthesis of pharmaceuticals, and as a phosphate source for micro-organisms in effluent treatment.