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Diammonium Phosphate (CAS 7783-28-0)
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.”
Information
Industries: Paints and varnishes, Fertilizers, Adhesives, oils, greases, Building chemistry
CAS number: 7783-28-0
WE number: 231-987-8
Chemical formula: (NH4)2HPO4
Molar mass: 132,1 g/mol
Customs tariff code: 31053000
Other physical properties
pH: 8-8,5
Relative density: 1,619 g/cm3 (20°C)
Solubility in water: 588 g/l (20°C)
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