| Names | |
|---|---|
| IUPAC name Lithium phosphate | |
| Other names Trilithium phosphate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.030.736 |
| EC Number |
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| UNII | |
| |
| |
| Properties | |
| Li3PO4 | |
| Molar mass | 115.794 g/mol |
| Appearance | White powder |
| Density | 2.46 g/cm3[1] |
| Melting point | 1,205 °C (2,201 °F; 1,478 K)[1] |
| 0.027 g/100 mL (25 °C)[1] | |
| Structure[2] | |
| Orthorhombic | |
| Pmn21 | |
a = 6.115,b = 5.239,c = 4.855 | |
| Tetrahederal (at all atoms) | |
| Thermochemistry | |
Std enthalpy of formation(ΔfH⦵298) | -2095.8 kJ/mol[1] |
| Hazards | |
| GHS labelling: | |
 | |
| Warning | |
| NFPA 704 (fire diamond) | |
| Related compounds | |
Othercations | Trisodium phosphate Tripotassium phosphate |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Lithium phosphate is aphosphate salt oflithium, with the molecular formula Li3PO4.[3] It is a white solid slightly soluble in water.
It is primarily used in the production oflithium iron phosphate (LiFePO4) for making lithium-ionbatteries.[3]
Trilithium phosphate can be produced by the neutralization oflithium carbonate usingphosphoric acid:[1]
The low-temperature polymorph (β-Li3PO4) crystallizes as an orthorhombic crystal with the space groupPmn21. If heated to above 500 °C, it converts to another polymorph, γ-Li3PO4.[4]
Large doses of lithium phosphate may causedizziness, and sometimes, kidney damage. According to some reports,dehydration,weight loss, and thyroid disturbances can occur due to high exposure of lithium ions. Nervous system defects, including slurred speech,blurred vision, sensory loss, and convulsions may also occur.[3]
