Cerium(III) acetate

Cerium(III) acetate

Names
IUPAC name Cerium(III) acetate
Other names Cerium triacetate Cerium acetate
Identifiers
CAS Number	anhydrous: 537-00-8^Y sesquihydrate: 206996-60-3^Y
3D model (JSmol)	anhydrous: Interactive image sesquihydrate: Interactive image
ChemSpider	anhydrous: 10369
ECHA InfoCard	100.007.869
EC Number	anhydrous: 208-654-0
PubChem CID	anhydrous: 10826 sesquihydrate: 22833299
UNII	anhydrous: YYB5291R2H sesquihydrate: 779OQ1RB37
CompTox Dashboard (EPA)	anhydrous: DTXSID40939067 DTXSID2027179, DTXSID40939067
InChI InChI=1S/3C2H4O2.Ce/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Key: VGBWDOLBWVJTRZ-UHFFFAOYSA-K sesquihydrate: InChI=1S/6C2H4O2.2Ce.3H2O/c6*1-2(3)4;;;;;/h6*1H3,(H,3,4);;;3*1H2/q;;;;;;2*+3;;;/p-6 Key: FLEYCIHWCBGBLG-UHFFFAOYSA-H
SMILES anhydrous: CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3] sesquihydrate: CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3].CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3].O.O.O
Properties
Chemical formula	Ce(CH3COO)3
Molar mass	317.26
Appearance	white powder
Melting point	308°C
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335, H410
Precautionary statements	P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, P501
Related compounds
Other cations	Lanthanum(III) acetate Praseodymium(III) acetate Neodymium acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cerium acetate is an inorganic compound with the chemical formula of Ce(CH₃COO)₃. It is a white powder that is soluble in water. Its 1.5 hydrate loses water at 133°C to obtain an amorphous anhydrous form, and the amorphous phase changes to crystal at 212°C, and phase changes again at 286°C.[2]

Preparation

Cerium acetate can be prepared by reacting cerium(III) carbonate and 50% acetic acid in an aqueous solution:[3]

Ce₂(CO₃)₃ + 6 CH₃COOH → 2 Ce(CH₃COO)₃ + 3 H₂O + 3 CO₂↑

Properties

Cerium acetate is soluble in water and ethanol in its anhydrous form (its hydrate is insoluble in ethanol), easily soluble in pyridine, and insoluble in acetone.[4] Its thermal decomposition at 310 °C will generate basic cerium(III) acetate, which will be further decomposed to obtain Ce₂O₂CO₃ (a basic carbonate), and continued heating generates CeO₂ and CO.[2]

References

1. "Cerium triacetate". pubchem.ncbi.nlm.nih.gov.
2. Arii T, Kishi A, Ogawa M, et al. Thermal decomposition of cerium (III) acetate hydrate by a three-dimensional thermal analysis Archived 2018-10-24 at the Wayback Machine[J]. Analytical sciences, 2001, 17(7): 875-880.
3. 《无机化合物制备手册》.朱文祥 主编. 化学工业出版社.第十四章 碳族元素.P₅₁₂.XIV-124 醋酸铈(III)
4. 《无机化合物合成手册》.第二卷.日本化学会 编. 曹惠民 译. 化学工业出版社. 1988.7第一版.【1260】稀土元素的乙酸盐.P₅₈₂