Cerium oxalate

Cerium oxalate

Names
IUPAC name Cerium(III) oxalate
Other names Cerium oxalate Cerous oxalate
Identifiers
CAS Number	139-42-4 Y
3D model (JSmol)	Interactive image
ChemSpider	145101
PubChem CID	165565
UNII	96P72VE680 Y
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
Occupational safety and health (OHS/OSH):
Main hazards	Corrosive, Irritant, Respiratory irritant, Toxic
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H314, H319, H331, H335, H370
Precautionary statements	P260, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P308+P313, P332+P313, P403+P233
NFPA 704 (fire diamond)	<imagemap> File:NFPA 704.svg|80px|alt=NFPA 704 four-colored diamond poly 150 150 300 300 150 450 0 300 Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas poly 300 0 450 150 300 300 150 150 Flammability 0: Will not burn. E.g. water poly 450 150 600 300 450 450 300 300 Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium poly 300 300 450 450 300 600 150 450 Special hazards (white): no code desc none </imagemap> 3 0 1
Flash point	188.8 °C
Safety data sheet (SDS)	External SDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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.

Uses

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

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.