Antimony(III) acetate

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Antimony(III) acetate
Antimony(III) acetate
CAS number 6923-52-0 YesY
PubChem 16685080
ChemSpider 21839 YesY
RTECS number AF4200000
Jmol-3D images Image 1
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Molecular formula C6H9O6Sb
Molar mass 298.89 g mol−1
Appearance White powder
Density 1.22 g/cm³ (20 °C)
Melting point 128.5 °C (263.3 °F; 401.6 K) (decomposes to Sb2O3)
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
LD50 4480 mg/kg (rat)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Antimony(III) acetate is the antimony salt of acetic acid with the chemical formula of Sb(CH3COO)3. It has the appearance of a white powder, is moderately water soluble, and is used as a catalyst in the production of synthetic fibers.


It can be prepared by the reaction of antimony(III) oxide with acetic acid:

Sb2O3 + 6 HC2H3O2 → 2 Sb(C2H3O2)3 + 3H2O

Crystal Structure[edit]

The crystal structure of antimony(III) acetate has been determined by X-ray crystallography. It consists of discrete Sb(OAc)3 monomers with monodentate acetate ligands. The monomers are linked together into chains by weaker C=O···Sb intermolecular interactions.[1]



  1. ^ Hall, M.; Sowerby, D. B. (1980). "Antimony(III) acetate and thioacetate: spectra and crystal structures". J. Chem. Soc., Dalton Trans. (8): 1292–1296. doi:10.1039/DT9800001292.