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Lanthanum oxalate

Topic: Chemistry

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Lanthanum oxalate
Names
Other names
lanthanum(3+);oxalate, lanthanum sesquioxalate
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 208-656-1
Properties
C6La2O12
Molar mass 541.87 g/mol
Appearance colorless crystals
Density g/cm3
poorly soluble
Related compounds
Related compounds
 Calcium oxalate
Sodium oxalate
Magnesium oxalate
Strontium oxalate
Barium oxalate
Potassium oxalate
Beryllium oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Lanthanum oxalate is an inorganic compound, a salt of lanthanum metal and oxalic acid with the chemical formula La2(C2O4)3.[1][2]

Synthesis

Reaction of soluble lanthanum nitrate with an excess of oxalic acid:

[math]\ce{ 2La(NO3)3 + 3(COOH)2 -> La2(C2O4)3 + 6HNO3 }[/math]

Also, a reaction of lanthanum chloride with oxalic acid:

[math]\ce{ 2LaCl3 + 3H2C2O4 -> La2(C2O4)3 + 6HCl }[/math]

Physical properties

Lanthanum(III) oxalate forms colorless crystals that are poorly soluble in water.[3]

The compound forms various crystallohydrates La2(C2O4)3•nH2O, where n = 1, 2, 3, 7, and 10.[4][5]

The crystallohydrates decompose when heated.[6]

References

  1. ↑ Glasner, A.; Steinberg, M. (1 February 1961). "The thermal decomposition of lanthanum oxalate" (in en). Journal of Inorganic and Nuclear Chemistry 16 (3): 279–287. doi:10.1016/0022-1902(61)80503-4. ISSN 0022-1902. https://www.sciencedirect.com/science/article/abs/pii/0022190261805034. Retrieved 17 March 2023. 
  2. ↑ "Lanthanum oxalate" (in en). National Institute of Standards and Technology. https://webbook.nist.gov/cgi/cbook.cgi?ID=B6000080&Units=SI. 
  3. ↑ Kolthoff, I. M.; Elmquist, Ruth. (April 1931). "THE SOLUBILITIES OF LANTHANUM OXALATE AND OF LANTHANUM HYDROXIDE IN WATER. THE MOBILITY OF THE LANTHANUM ION AT 25°". Journal of the American Chemical Society 53 (4): 1217–1225. doi:10.1021/ja01355a004. https://pubs.acs.org/doi/abs/10.1021/ja01355a004. Retrieved 17 March 2023. 
  4. ↑ "Lanthanum(III) oxalate hydrate". Sigma Aldrich. https://www.sigmaaldrich.com/RU/en/product/aldrich/461024. 
  5. ↑ "Lanthanum Oxalate Hydrate" (in en). https://www.americanelements.com/lanthanum-oxalate-hydrate-312696-10-9. 
  6. ↑ Purwani, M V; Suyanti, Suyanti; Adi, Wisnu Ari (31 January 2019). "THERMAL DECOMPOSITION KINETICS OF LANTHANUM OXALATE HYDRATE PRODUCT TREATMENT FROM MONAZITE". Jurnal Sains Materi Indonesia 20 (2): 50. doi:10.17146/jsmi.2019.20.2.5295. 



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