Gallium acetate

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 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]

Gallium acetate
Gallium acetate
Names
IUPAC names
Tetra-μ2-acetatodiaquadigallium(III), diacetyloxygallanyl acetate gallium(3+) triacetate
Other names
  • Gallium ethanoate
  • Gallium triacetate
  • Gallium(III) acetate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.018.106
EC Number
  • 219-915-3
  • InChI=1S/3C2H4O2.Ga/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3
    Key: FYWVTSQYJIPZLW-UHFFFAOYSA-K
  • CC(=O)O[Ga](OC(=O)C)OC(=O)C
Properties
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:
GHS05: CorrosiveGHS07: Exclamation mark
Danger
H314, H335
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
Acetate anion
The depiction of one of the bonding anions in gallium acetate.

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

References
  1. "Gallium acetate".
  2. Elements, American. "Gallium Acetate". American Elements. Retrieved 2022-05-05.
  3. "Gallium acetate, 99.9% 2571-06-4 - Manufacturers & Suppliers in India with worldwide shipping". www.ottokemi.com. Retrieved 2022-05-05.
  4. Funk, H.; Paul, A. Chemistry of gallium. II. Reactions between gallium and organic compounds. Zeitschrift für Anorganische und Allgemeine Chemie (1965), 337(3-4), 142-4.
  5. Jalilian, Amir R.; Yousefnia, Hassan; Garousi, Javad; Novinrouz, Aytak; Rajamand, Amir A.; Shafaee, Kamaledin (2009). "The development of radiogallium-acetylacetonate bis(thiosemicarbazone) complex for tumour imaging". Nuclear Medicine Review. 12 (2): 65–71. ISSN 1644-4345.
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