Diammonium phosphate, also known as diammonium hydrogen phosphate and ammonium hydrogen phosphate, it is a white crystal with molecular formula (NH₄)₂HPO₄, soluble in water, insoluble in ethanol. The aqueous solution is weakly alkaline with a ph of 8.0.Specific gravity 1.619. It is a compound fertilizer containing nitrogen and phosphorus. In order to increase the storage resistance, coating agent is added in the production process, so that the final product appearance is brown or yellow. It has a certain hygroscopic property, which is easy to decompose in humid air, and volatilizes ammonia into ammonium dihydrogen phosphate. 

Diammonium phosphate is a high concentration of quick acting fertilizer. It is suitable for various crops and soil. It is especially suitable for crops that need phosphorus and nitrogen. It can be used as base fertilizer or topdressing by deep application.

Product physical properties: this product is soluble in water, dissolved solids less, applies in various crops on the need of nitrogen, phosphorus, especially suitable for the lack of rain of the region as basal, seed manure and topdressing fertilizer.

Applications:
High performance nitrogen and phosphorus binary compound fertilizer, physical neutral, and can be used in any soil and the vast majority of crops
As a curing agent for urea formaldehyde resin adhesive, 20% water solution is the most slow curing agent. It is also used as an additive type flame retardant. If a small amount of DAP is added to the natural rubber latex, the magnesium ions in the latex can be effectively eliminated without reducing the tensile strength of the natural latex after vulcanization.

Use:
It can be mixed well with urea, ammonium nitrate and ammonium chloride. because DAP does not contain any potassium, it should be applied in combination with potassium fertilizer (potassium chloride, potassium sulfate).