Lithium Oxalate

Lithium oxalate
Names
	IUPAC name Lithium oxalate
	Other names Dilithium oxalate; di-Lithium oxalate; Oxalic acid dilithium salt;
Identifiers
CAS Number	553-91-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	61669;
EC Number	209-054-1;
PubChem CID	68383;
UNII	K737OT0E73 ;
	InChI InChI=1S/C2H2O4-C.2Li/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2 Key: YNQRWVCLAIUHHI-UHFFFAOYSA-L;
	SMILES [Li+].[Li+].[O-]C(=O)C([O-])=O;
Properties
Chemical formula	Li; 2C; 2O; 4
Molar mass	101.90 g·mol−1
Appearance	Colorless crystalline solid
Density	2.12 g/cm3
Solubility in water	6.6 g per 100 g of water
Hazards
GHS pictograms
GHS Signal word	WARNING
GHS hazard statements	H302, H312
GHS precautionary statements	P264, P270, P280, P301+312, P302+352, P312, P322, P330, P363, P501
Related compounds
Related compounds	Sodium oxalate; Potassium oxalate; Beryllium oxalate; Magnesium oxalate; Calcium oxalate; Strontium oxalate; Barium oxalate;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Lithium oxalate is an organic compound with the chemical formula Li
2C
2O
4. It is a salt of lithium metal and oxalic acid.^[3]^[4] It consists of lithium cations Li+
and oxalate anions C
2O2−
4. Lithium oxalate is soluble in water and converts to lithium oxide when heated.^[5]

Synthesis

One of the methods of synthesis is the reaction of direct neutralization of oxalic acid with lithium hydroxide:

2 LiOH + H
2C
2O
4 → Li
2C
2O
4 + 2 H
2O

Properties

The compound crystallizes in the monoclinic system, cell parameters a = 3.400 Å, b = 5.156 Å, c = 9.055 Å, β = 95.60°, Z = 4.^[3]

Lithium oxalate decomposes when heated at 410–500 °C (770–932 °F; 683–773 K):

Li
2C
2O
4 → Li
2CO
3 + CO

Applications

In pyrotechnics, the compound is used to color the flame red.^[6]

References

↑ "553-91-3 | Sigma-Aldrich". Sigma Aldrich. https://www.sigmaaldrich.com/RU/ru/search/553-91-3?focus=products&page=1&perPage=30&sort=relevance&term=553-91-3&type=cas_number.
↑ "di-Lithium oxalate". Merck Millipore. https://www.merckmillipore.com/RU/ru/product/di-Lithium-oxalate,MDA_CHEM-822085?ReferrerURL=https://www.google.ru/.
↑ ^3.0 ^3.1 Beagley, B.; Small, R. W. H. (1964-06-10). "The structure of lithium oxalate" (in en). Acta Crystallographica 17 (6): 783–788. doi:10.1107/S0365110X64002079. https://scripts.iucr.org/cgi-bin/paper?a04249. Retrieved 15 June 2021.
↑ Solchenbach, Sophie; Wetjen, Morten; Pritzl, Daniel; Schwenke, K. Uta; Gasteiger, Hubert A. (2018). "Lithium Oxalate as Capacity and Cycle-Life Enhancer in LNMO/Graphite and LNMO/SiG Full Cells" (in en). Journal of the Electrochemical Society 165 (3): A512–A524. doi:10.1149/2.0611803jes. https://iopscience.iop.org/article/10.1149/2.0611803jes. Retrieved 15 June 2021.
↑ "Lithium Oxalate" (in en). Millipore-Sigma. https://www.emdmillipore.com/CA/en/product/di-Lithium-oxalate,MDA_CHEM-822085.
↑ Koch, Ernst-Christian (2009). "Is it possible to Obtain a Deep Red Pyrotechnic Flame Based on Lithium?". 36th International Pyrotechnics Seminar. doi:10.13140/2.1.1657.0567. https://www.researchgate.net/publication/268211790. Retrieved 15 June 2021.

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[1] "553-91-3 | Sigma-Aldrich". Sigma Aldrich. https://www.sigmaaldrich.com/RU/ru/search/553-91-3?focus=products&page=1&perPage=30&sort=relevance&term=553-91-3&type=cas_number.

[2] "di-Lithium oxalate". Merck Millipore. https://www.merckmillipore.com/RU/ru/product/di-Lithium-oxalate,MDA_CHEM-822085?ReferrerURL=https://www.google.ru/.

[beag-3] 3.0 ^3.1 Beagley, B.; Small, R. W. H. (1964-06-10). "The structure of lithium oxalate" (in en). Acta Crystallographica 17 (6): 783–788. doi:10.1107/S0365110X64002079. https://scripts.iucr.org/cgi-bin/paper?a04249. Retrieved 15 June 2021.

[4] Solchenbach, Sophie; Wetjen, Morten; Pritzl, Daniel; Schwenke, K. Uta; Gasteiger, Hubert A. (2018). "Lithium Oxalate as Capacity and Cycle-Life Enhancer in LNMO/Graphite and LNMO/SiG Full Cells" (in en). Journal of the Electrochemical Society 165 (3): A512–A524. doi:10.1149/2.0611803jes. https://iopscience.iop.org/article/10.1149/2.0611803jes. Retrieved 15 June 2021.

[5] "Lithium Oxalate" (in en). Millipore-Sigma. https://www.emdmillipore.com/CA/en/product/di-Lithium-oxalate,MDA_CHEM-822085.

[6] Koch, Ernst-Christian (2009). "Is it possible to Obtain a Deep Red Pyrotechnic Flame Based on Lithium?". 36th International Pyrotechnics Seminar. doi:10.13140/2.1.1657.0567. https://www.researchgate.net/publication/268211790. Retrieved 15 June 2021.

v t e Lithium compounds
Inorganic	LiAlCl₄ LiAlH₄ LiAlO₂ LiBF₄ LiBH₄ LiBO₂ LiB₃O₅ Li₂B₄O₇ LiBr Li₂CO₃ Li₂C₂ LiCl LiClO LiClO₃ LiClO₄ LiCoO₂ LiF LiH LiI LiIO₃ Li₂IrO₃ Li₂MoO₄ LiNH₂ Li₂NH LiN₃ Li₃N LiNO₂ LiNO₃ LiNbO₃ LiOH LiO₂ Li₂O Li₂O₂ LiPF₆ Li₂PtO₃ Li₂Po Li₂RuO₃ Li₂S Li₂SO₃ Li₂SO₄ Li₃H(CO₃)₂ Li₂SiO₃ LiTaO₃ Li₂TiO₃
Organic	12-hydroxystearate acetate aspartate citrate diisopropylamide orotate succinate stearate organolithiums
Minerals	Amblygonite Elbaite Eucryptite Jadarite Lepidolite Lithiophilite Petalite Pezzottaite Saliotite Spodumene Sugilite Tourmaline Zabuyelite Zinnwaldite

Names

IUPAC name Lithium oxalate
Other names Dilithium oxalate di-Lithium oxalate^[1] Oxalic acid dilithium salt^[2]
Identifiers
CAS Number	553-91-3^Y
3D model (JSmol)	Interactive image
ChemSpider	61669
EC Number	209-054-1
PubChem CID	68383
UNII	K737OT0E73^N
InChI InChI=1S/C2H2O4-C.2Li/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2 Key: YNQRWVCLAIUHHI-UHFFFAOYSA-L
SMILES [Li+].[Li+].[O-]C(=O)C([O-])=O
Properties
Chemical formula	Li 2C 2O 4
Molar mass	101.90 g·mol⁻¹
Appearance	Colorless crystalline solid
Density	2.12 g/cm³
Solubility in water	6.6 g per 100 g of water
Hazards
GHS pictograms
GHS Signal word	WARNING
GHS hazard statements	H302, H312
GHS precautionary statements	P264, P270, P280, P301+312, P302+352, P312, P322, P330, P363, P501
Related compounds
Related compounds	Sodium oxalate Potassium oxalate Beryllium oxalate Magnesium oxalate Calcium oxalate Strontium oxalate Barium oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references