Diammonium phosphate

Diammonium phosphate (CAS 7783-28-0), commonly known as DAP, is an inorganic ammonium salt sourced for its dual function as a flame retardant and pH buffering agent across multiple industrial sectors.

Secondary ammonium phosphate is a recognized alternative designation used in some procurement and regulatory contexts. Its ability to release ammonia and phosphoric acid under heat makes it effective in fire suppression.

In agriculture, DAP is one of the most concentrated phosphorus-nitrogen fertilizers available, applied directly to soil or blended into NPK compound fertilizers to support crop nutrition programs.

Textile and leather processors use it as a flame-retarding treatment for fabrics, paper, and hides, where it reduces flammability ratings to meet regulatory standards in various markets.

In construction materials, DAP is incorporated into fireproofing formulations for wood, insulation boards, and coatings. It also functions as a fermentation nutrient and pH buffer in yeast-based processes.

These industrial processes include bioethanol production and food manufacturing. DAP is supplied as white crystalline granules or powder to meet the specific handling requirements of global manufacturers.

Standard commercial grades include technical grade for industrial flame retardant and fertilizer use, and food-grade material conforming to FCC specifications for permitted food processing applications.

Bulk supply in bags or bulk containers is standard for agricultural and industrial volumes. This ensures efficient logistics and storage for large-scale operations requiring consistent chemical purity.