Cerium oxalate

Cerium(III) oxalate (cerous oxalate) is the inorganic cerium salt of oxalic acid. It is a white crystalline solid with the chemical formula of Ce₂(C₂O₄)₃. It could be obtained by the reaction of oxalic acid with cerium(III) chloride.

Cerium oxalate

Names
IUPAC name Cerium(III) oxalate
Other names Cerium oxalate Cerous oxalate
Identifiers
CAS Number	139-42-4
3D model (JSmol)	Interactive image
ChemSpider	145101
ECHA InfoCard	100.004.875
PubChem CID	165565
UNII	96P72VE680
InChI InChI=1S/3C2H2O4.2Ce/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: ZMZNLKYXLARXFY-UHFFFAOYSA-H
SMILES C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[Ce+3].[Ce+3]
Properties
Chemical formula	C6Ce2O12
Molar mass	544.286 g·mol^−1
Appearance	White crystals
Melting point	Decomposes
Solubility in water	Slightly soluble
Pharmacology
ATC code	A04AD02 (WHO)
Hazards
Main hazards	Corrosive, Irritant, Respiratory irritant, Toxic
Safety data sheet	External SDS
GHS pictograms	[1]
GHS Signal word	Danger[1]
GHS hazard statements	H301, H311, H314, H319, H331, H335, H370[1]
GHS precautionary statements	P260, P264, P270, P271, P280, P301+310, P302+352, P304+340, P305+351+338, P308+313, P332+313, P403+233[1]
NFPA 704 (fire diamond)	0 3 1
Flash point	188.8 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Uses

Cerium(III) oxalate is used as an antiemetic.[2][3] It has been identified as part of the invisible ink that was used by Stasi operatives during the Cold War.[4]

Toxicity

Cerium(III) oxalate irritates skin and mucous membranes, and is a strong irritant to eyes. If it gets into the eyes, there is a danger of severe eye injury.

Cerium salts increase the blood coagulation rate, and exposure to cerium salts can cause sensitivity to heat.

Oxalates are corrosive to tissue and are powerful irritants. They have a caustic effect on the linings of the digestive tracts and can cause kidney damage.

References

1. "Cerium(III) Oxalate, Anhydrous". American Elements. Retrieved 2019-03-26.
2. "KEGG DRUG: Cerium oxalate". KEGG DRUG Database. Retrieved 2019-03-26.
3. Milne, G. W. A. (2017-11-01). Drugs: Synonyms and Properties: Synonyms and Properties. ISBN 9781351755092.
4. "Cold War Invisible Ink Secrets Unlocked". ScienceDaily. 2006-11-08.