Potassium dihydrogen phosphate is a potassium salt in which dihydrogen phosphate(1-) is the counterion. It has a role as a fertilizer. 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.
Physical & Chemical Properties
Molecular FormulaKH2PO4
Density:2.34g/cm³g/cm³
Boiling Point:
Solubility:Soluble in water, insoluble in ethanol.
Molecular Weight:136.1g/mol
Flash Point:
Melting Point:
Uses
Mainly used as a bacterial culture medium, a flavoring agent for synthetic sake, a raw material for potassium metaphosphate, and as a culture medium, strengthener, leavening agent and fermentation aid for brewing yeast.It is used as a high-efficiency phosphorus-potassium compound fertilizer in agriculture.
Safety, Security & Risk
When heated, it decomposes and releases toxic gases.Its aqueous solution is a weak acid.