Diammonium Phosphate

Product Description

Diammonium Phosphate is a fine powder with a purity level of 96%. It is commonly used in industrial applications due to its acidic properties, with a pH level of 2.5. This product is ideal for use in the production of fertilizers, fire retardants, and food additives. It is also used in water treatment facilities to reduce the level of contaminants in water. With its easy-to-store nature at room temperature, Diammonium Phosphate is a convenient product that can be used in a variety of industries.

Diammonium phosphate (DAP; IUPAC name diammonium hydrogen phosphate; chemical formula (NH4)2(HPO4)) is one of a series of water-soluble ammonium phosphate salts that can be produced when ammonia reacts with phosphoric acid.

According to the diammonium phosphate MSDS from CF Industries, Inc., decomposition starts as low as 70 C: "Hazardous Decomposition Products: Gradually loses ammonia when exposed to air at room temperature. Decomposes to ammonia and monoammonium phosphate at around 70 C (158 F). At 155 C (311 F), DAP emits phosphorus oxides, nitrogen oxides and ammonia."

DAP is used as a fertilizer. When applied as plant fertilizer, it temporarily increases the soil pH, but over a long term the treated ground becomes more acidic than before, upon nitrification of the ammonium. It is incompatible with alkaline chemicals because its ammonium ion is more likely to convert to ammonia in a high-pH environment. The average pH in solution is 7.58.The typical formulation is 18-46-0 (18% N, 46% P2O5, 0% K2O).