It serves as a fertilizer providing nitrogen and phosphorus for crops a flame retardant in textiles and plastics a buffering agent in food (e.g. as acidity regulator) and in lab applications like protein crystallization.

Its primary purpose is nutrient delivery in agriculture and fire safety leveraging high water solubility (58 g100 mL at 10C) and pH 8 in solution for soil amendment and intumescent coatings.

Ammonium phosphate dibasic is a white crystalline or powdery inorganic salt consisting of two ammonium cations and one hydrogen phosphate anion with molecular weight 132.06 gmol density 1.62 gcm and decomposing at 155C while releasing ammonia.