Urea phosphate

Urea phosphate is an organic compound of carbon, hydrogen, nitrogen, oxygen and phosphorus. Its formula is CO(NH₂)₂·H₃PO₄. It is made by reacting urea with phosphoric acid.

It is sometimes used as a fertilizer; as such, its NPK formula is 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 and magnesium nitrate to produce water-soluble formulas such as 15-5-15, 13-2-20, and 13-2-13. 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 the pipe system.

Nitrogen species

NH₃ NH₄⁺ N₃^– CN⁻ NO HNO₃ N³⁻ NO₂⁻ NO₃⁻ C₂N₂ NH₂⁻ -NH₂ Cl₃N F₃N N₂O HNO₂ N₂O₃ N₂O₄ N₂O₅ HCN N₂CH₂

Chemical formulas

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