Gallium acetate

Names
IUPAC names Tetra-μ2-acetatodiaquadigallium(III), diacetyloxygallanyl acetate gallium(3+) triacetate
Other names Gallium ethanoate Gallium triacetate Gallium(III) acetate
Identifiers
CAS Number	2571-06-4
3D model (JSmol)	Interactive image
ChemSpider	144647
ECHA InfoCard	100.018.106
EC Number	219-915-3
PubChem CID	16704853
CompTox Dashboard (EPA)	DTXSID7062530
InChI InChI=1S/3C2H4O2.Ga/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Key: FYWVTSQYJIPZLW-UHFFFAOYSA-K
SMILES CC(=O)O[Ga](OC(=O)C)OC(=O)C
Properties
Chemical formula	Ga(O2C2H3)3
Molar mass	246.85[1]
Appearance	white crystals
Density	1.57 g/cm/3
Melting point	N/A
Boiling point	117.1C
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H335
Precautionary statements	P261, P280, P304+P340, P305+P351+P338, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Gallium acetate is a salt composed of a gallium atom trication and three acetate groups as anions where gallium exhibits the +3 oxidation state. It has a chemical formula of Ga(CH₃COO)₃ although it can be informally referred to as GaAc^{[dubious – discuss]} because Ac is an informal symbol for acetate. Gallium is moderately water-soluble and decomposes to gallium oxide when heated to around 70 °C.^[2] Gallium acetate, like other acetate compounds, is a good precursor to ultra-pure compounds, catalysts and nanoscale materials.^[2] Gallium acetate is being considered as a substitute in de-icing compounds like calcium chloride and magnesium chloride.^[3]

Preparation

Gallium acetate can be formed using a neutralization reaction (acetic acid reacts with gallium oxide or gallium hydroxide):

6CH₃COOH + Ga₂O₃ → 2Ga(CH₃COO)₃ + 3H₂O

3CH₃COOH + Ga(OH)₃ → Ga(CH₃COO)₃ + 3H₂O

Gallium can also be refluxed in acetic acid for several weeks to produce gallium acetate.^[4]

Applications

It can also be used in conjunction with acetylacetonate bis(thiosemicarbazone) to create radiogallium-acetylacetonate bis(thiosemicarbazone) complex. It can be used in tumor imaging.^[5]

See also

• Gallium
• Acetic acid

References