Lanthanum oxalate

Lanthanum oxalate
Names
Other names lanthanum(3+);oxalate, lanthanum sesquioxalate
Identifiers
CAS Number	537-03-1^Y
3D model (JSmol)	Interactive image
ChemSpider	144342
ECHA InfoCard	100.007.871
EC Number	208-656-1
PubChem CID	164654
CompTox Dashboard (EPA)	30927256
InChI InChI=1S/3C2H2O4.2La/c33-1(4)2(5)6;;/h3(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: OXHNIMPTBAKYRS-UHFFFAOYSA-H
SMILES C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[La+3].[La+3]
Properties
Chemical formula	C ₆La ₂O ₁₂
Molar mass	541.87 g/mol
Appearance	colorless crystals
Density	g/cm³
Solubility in water	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

Lanthanum oxalate is an inorganic compound, a salt of lanthanum metal and oxalic acid with the chemical formula La
₂(C
₂O
₄)
₃.^[1]^[2]

Synthesis

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

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

Also, a reaction of lanthanum chloride with oxalic acid:

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

Physical properties

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

The compound forms various crystallohydrates La
₂(C
₂O
₄)
₃•nH
₂O, where n = 1, 2, 3, 7, and 10.^[4]^[5]

The crystallohydrates decompose when heated.^[6]

References

^ Glasner, A.; Steinberg, M. (1 February 1961). "The thermal decomposition of lanthanum oxalate". Journal of Inorganic and Nuclear Chemistry. 16 (3): 279–287. doi:10.1016/0022-1902(61)80503-4. ISSN 0022-1902. Retrieved 17 March 2023.
^ "Lanthanum oxalate". National Institute of Standards and Technology. Retrieved 17 March 2023.
^ 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. Retrieved 17 March 2023.
^ "Lanthanum(III) oxalate hydrate". Sigma Aldrich. Retrieved 17 March 2023.
^ "Lanthanum Oxalate Hydrate". Retrieved 17 March 2023.
^ 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.

Lanthanum compounds

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