Lanthanum oxalate
_oxalate.svg) | |
| Names | |
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| Other names
lanthanum(3+);oxalate, lanthanum sesquioxalate
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.007.871 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C 6La 2O 12 | |
| Molar mass | 541.87 g/mol |
| Appearance | colorless crystals |
| Density | g/cm3 |
| poorly soluble | |
| Hazards | |
| GHS labelling: | |
 
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| 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
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
[edit]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
[edit]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
[edit]- ^ 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.