Ammonium hydrogen phosphate is commonly used as a fertilizer. It can be used as fire retardant, in fireproofing textiles, paper and wood. It finds applications in vegetable fibers, impregnating lamp wicks, soldering metals, purifying sugar, in yeast cultures and corrosion inhibitors. It is used in the treatment of carbonate stones used in architectural, cultural heritage and optical materials. It is also used as a flux for soldering copper, tin and zinc.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.