Urea Phosphate (CAS 4861-19-2)

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Urea Phosphate (CAS 4861-19-2)

Urea phosphate is a fertilizer having NPK formula 17-44-0. It is soluble in water, and produces a strongly acidic solution. Urea phosphate is sometimes added to blends which contain calcium nitrate, magnesium nitrate and potassium nitrate to produce water-soluble formulas such as 15-5-15 and 13-2-20. The acidity of urea phosphate allows Ca, Mg and P to co-exist in solution. Under less acidic conditions, there would be precipitation of Ca-Mg phosphates. Urea phosphate is often used in drip irrigation to clean pipe systems.

Chemically, the urea phosphate compound is made of an equimolar mix of urea and phosphoric acid crystallizing together, and freely disassociating when dissolving in water. It is available in fertilizer vendor bags that carry a UP signet on the packaging.

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Description

Information
Industries: Fertilizers, Adhesives, oils, greases
CAS number: 4861-19-2
WE number: 225-464-3
Chemical formula: CH4N2O·H3O4P
Molar mass: 158,05 g/mol
Customs tariff code: 29241900
ADR: UN1759

Other physical properties
pH: ~ 1,2 (10 g/l H2O w 20°C)
Melting / freezing point: ~117,3°C
Relative density: 1,759 g/cm3 (21°C)
Solubility in water: 960 g/l (20°C)

Additional information

WeightN/A
Available amount

25 kg bag, 1000 kg