lithium phosphate

{{Short description|Chemical compound}}

{{distinguish|Lithium iron phosphate}}

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| ImageFile =

| ImageSize =

| IUPACName = Lithium phosphate

| OtherNames = Trilithium phosphate

|Section1={{Chembox Identifiers

| CASNo = 10377-52-3

| ChemSpiderID = 145361

| EC_number = 233-823-0

| PubChem = 165867

| UNII = 2QM4K05Q74

| StdInChI=1S/3Li.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3

| StdInChIKey = TWQULNDIKKJZPH-UHFFFAOYSA-K

| SMILES = [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O

}}

|Section2={{Chembox Properties

| Formula = Li₃PO₄

| Appearance = White powder

| MolarMass = 115.794 g/mol

| Solubility = 0.027 g/100 mL (25 °C){{CRC96}}

| MeltingPtC = 1205

| MeltingPt_ref =

| Density = 2.46 g/cm³

}}

| Section3 = {{Chembox Structure

| Structure_ref = {{cite journal |author1=Charles Keffer |author2=Alan D. Mighell |author3=Floyd Mauer |author4=Howard E. Swanson |author5=Stanley Block |title=Crystal structure of twinned low-temperature lithium phosphate |journal=Inorganic Chemistry |date=1967 |volume=6 |issue=1 |pages=119–125 |doi=10.1021/ic50047a027 |language=en}}

| CrystalStruct = Orthorhombic

| SpaceGroup = Pmn2₁

| LattConst_a = 6.115

| LattConst_b = 5.239

| LattConst_c = 4.855

| LattConst_alpha =

| LattConst_beta =

| LattConst_gamma =

| LattConst_ref =

| LattConst_Comment =

| UnitCellVolume =

| UnitCellFormulas =

| Coordination = Tetrahederal (at all atoms)

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| Section4 = {{Chembox Thermochemistry

| DeltaGf =

| DeltaHc =

| DeltaHf = -2095.8 kJ/mol

| Entropy =

| HeatCapacity =

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| Section7 = {{Chembox Hazards

| AutoignitionPt =

| ExploLimits =

| FlashPt =

| LD50 =

| LC50 =

| MainHazards =

| NFPA-H = 2

| NFPA-F = 0

| NFPA-I = 0

| NFPA-S =

| PEL =

| REL =

| ExternalSDS =

| GHSPictograms = {{GHS07}}

| GHSSignalWord = Warning

| HPhrases =

| PPhrases =

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| Section9 = {{Chembox Related

| OtherAnions =

| OtherCations = Trisodium phosphate
Tripotassium phosphate

| OtherFunction =

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| OtherCompounds =

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Lithium phosphate is a phosphate salt of lithium, with the molecular formula Li₃PO₄.{{cite web |title=Lithium Phosphate |url=https://www.sigmaaldrich.com/IN/en/product/aldrich/338893?srsltid=AfmBOoqvjfsVlAUTxvmaZQS0ukDI_vu-c0rRvUFa4nPa5THwPdHBRAD_ |website=Sigma Aldrich |access-date=16 May 2025}} It is a white solid slightly soluble in water.

It is primarily used in the production of lithium iron phosphate (LiFePO₄) for making lithium-ion batteries.