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Potassium dihydrogen phosphate is a potassium salt in which dihydrogen phosphate(1-) is the counterion. It is a potassium salt and an inorganic phosphate. Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion. It is a source of phosphorus and potassium as well as a buffering agent. It can be used in fertilizer mixtures to reduce escape of ammonia by keeping pH low.
Molar Weight | 136.086 g/mol |
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Melting Point | 253 °C |
Density | 2.34 g/cc |
Forms | Crystals (large), Powder (dry), White, Granular, Red-brown, Pellets |
Synonyms: Potassium dihydrogen phosphate, Potassium phosphate monobasic, Monobasic potassium phosphate, Potassium acid phosphate, Potassium dihydrogen orthophosphate, Monopotassium monophosphate, Monopotassium orthophosphate, potassium dihydrogenphosphate
Chemical Formula: KH2PO4
CAS Number: 7778-77-0