Lanthanum oxalate

Last updated
Lanthanum oxalate
Lanthanum(III) oxalate.svg
Names
Other names
lanthanum(3+);oxalate, lanthanum sesquioxalate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.007.871 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 208-656-1
PubChem CID
  • InChI=1S/3C2H2O4.2La/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6
    Key: OXHNIMPTBAKYRS-UHFFFAOYSA-H
  • C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[La+3].[La+3]
Properties
C
6
La
2
O
12
Molar mass 541.87 g/mol
Appearancecolorless crystals
Density g/cm3
poorly soluble
Hazards
GHS labelling:
GHS-pictogram-exclam.svg GHS-pictogram-pollu.svg
Warning
H302, H312, H317, H411
P261, P264, P270, P272, P273, P280, P301+P317, P302+P352, P317, P321, P330, P333+P317, P362+P364, P391, P501
Related compounds
Other cations
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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

Contents

Synthesis

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

2 La(NO3)3 + 3 (COOH)2 → La2(C2O4)3 + 6 HNO3

Also, a reaction of lanthanum chloride with oxalic acid:

2 LaCl3 + 3 H2C2O4 → La2(C2O4)3 + 6 HCl

Physical properties

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

The compound forms various crystallohydrates La
2
(C
2
O
4
)
3
•nH
2
O
, 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" . 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.
  2. "Lanthanum oxalate". National Institute of Standards and Technology . Retrieved 17 March 2023.
  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 . Retrieved 17 March 2023.
  4. "Lanthanum(III) oxalate hydrate". Sigma Aldrich . Retrieved 17 March 2023.
  5. "Lanthanum Oxalate Hydrate" . Retrieved 17 March 2023.
  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 .