Chemistry:Cerium oxalate

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Cerium oxalate
Cerium oxalate.svg
Cerium oxalate.jpg
IUPAC name
Cerium(III) oxalate
Other names
  • Cerium oxalate
  • Cerous oxalate
3D model (JSmol)
Molar mass 544.286 g·mol−1
Appearance White crystals
Melting point Decomposes
Slightly soluble
1=ATC code }} A04AD02 (WHO)
Main hazards Corrosive, Irritant, Respiratory irritant, Toxic
Safety data sheet External SDS
GHS pictograms GHS05: CorrosiveGHS06: ToxicGHS08: Health hazard[1]
GHS Signal word Danger[1]
H301, H311, H314, H319, H331, H335, H370[1]
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)
Flammability code 0: Will not burn. E.g. waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no codeNFPA 704 four-colored diamond
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

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(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]


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.