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MonoCalium Phosphate
MonoCalium Phosphate

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MonoCalium Phosphate
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Product: MonoCalium Phosphate
High Quality
Earliest Shipment
Competitive price
Professional Service


Monocalcium phosphate is a chemical compound with the formula Ca(H2PO4)2. It is commonly found as the monohydrate, Ca(H2PO4)2·H2O


Phosphorus is an essential nutrient and therefore is a common component of agricultural fertilizers. Tricalcium phosphate Ca3(PO4)2, a major component of phosphate rock such as phosphorite,[1] apatite, and other phosphate minerals, is too insoluble to be an efficient fertilizer. Therefore it can be converted into the more soluble monocalcium phosphate, generally by the use of sulfuric acid H2SO4. The result is hydrated to turn the calcium sulfate into the dihydrate gypsum and sold as superphosphate of lime. Alternately phosphate rock may be treated with phosphoric acid to produce a purer form of monocalcium phosphate and is sold as triple phosphate.


Monocalcium phosphateIdentifiersPropertiesHazardsRelated compounds
IUPAC name[hide]Calcium dihydrogenphosphate
Other names[hide]Acid calcium phosphate
Calcium acid phosphate
Calcium biphosphate
Monobasic calcium phosphate
Monocalcium orthophosphate
Calcium diorthophosphate
Phosphoric acid, calcium salt (2:1)
CAS number7758-23-8 Y
Molecular formulaCaH4P2O8
Molar mass234.05 g/mol
Appearancewhite powder
Density2.22 g/cm3
Melting point

109 °C

Boiling point

203 °C (decomposes)

Solubility in water2 g/100 mL
EU IndexNot listed
NFPA 704010
Flash pointNon-flammable
Other anionsCalcium pyrophosphate
Other cationsMagnesium phosphate
Dicalcium phosphate
Tricalcium phosphate

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