Names | |
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Other names
Magnesium hydrogen phosphate; Magnesium phosphate dibasic
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Identifiers | |
CAS Number
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3D model (JSmol)
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ChemSpider |
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ECHA InfoCard | 100.028.930 |
EC Number |
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E number | E343(ii) (antioxidants, ...) |
PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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InChI
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SMILES
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Properties | |
Chemical formula
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HMgO4P |
Molar mass | 120.283 g·mol−1 |
Density | 2.13 g/cm3 trihydrate |
Hazards | |
NFPA 704 (fire diamond) |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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Dimagnesium phosphate is a compound with formula MgHPO4. It is a Mg2+ salt of monohydrogen phosphate. The trihydrate is well known, occurring as a mineral.[1]
It can be formed by reaction of stoichiometric quantities of magnesium oxide with phosphoric acid.
Dissolving monomagnesium phosphate in water, forms phosphoric acid and depositing a solid precipitate of dimagnesium phosphate trihydrate:
The compound is used as a nutritional supplement, especially for infants and athletes. Its E number is E343.[2]