Barium acetate

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Barium acetate
IUPAC name
Barium acetate
Other names
Barium diacetate
Molar mass 255.415 g/mol
Appearance Colorless crystalline solid
Odor Odorless
Density 2.468 g/cm3 (anhydrous)
2.19 g/cm3 (monohydrate)
Melting point 450 °C (842 °F; 723 K) (decomposition)
Boiling point Decomposes
55.8 g/100 ml (0 °C)
71 g/100ml (20 °C)
75 g/100ml (30 °C)
79 g/100ml (40 °C)[1]
Solubility Soluble in acetic acid
Slightly soluble in ethanol, methanol
Insoluble in acetone
Solubility in acetic acid 13.9 g/100 ml (22.5 °C)
75.4 g/100 ml (88 °C)[2]
Solubility in ethanol 0.092 g/100 ml (25 °C)[3]
Solubility in methanol 0.55 g/100 ml (18 °C)
0.23 g/100 ml (66 °C)[4]
Vapor pressure ~0 mmHg
-1,485.7 kJ/mol[5]
Safety data sheet Sigma-Aldrich
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
921 mg/kg (rat, oral)
Related compounds
Related compounds
Barium formate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Barium acetate is the acetic acid salt of barium. It has the formula Ba(CH3COO)2.



Barium acetate will react with a soluble sulfate salt, like sodium sulfate, to yield the very insoluble barium sulfate. This is a good way of neutralizing any barium acetate that may have been ingested.

Ba(CH3COO)2 + Na2SO4 → BaSO4 + 2 CH3COONa

If concentrated sulfuric acid is used, pure acetic acid is obtained (also known as glacial acetic acid).

Thermal decomposition of barium acetate yields barium carbonate and acetone, as well as traces of organic side products from the decomposition reaction:

Ba(CH3COO)2 → BaCO3 + (CH3)2CO


Barium acetate is a hygroscopic white solid, soluble in water and acetic acid, while slightly soluble in alcohol.


Barium acetate is sold by chemical suppliers.

Since it's a soluble barium salt, in some countries its sale may be regulated.


Barium acetate is generally produced by the reaction of acetic acid with barium carbonate, hydroxide or oxide:

BaCO3 + 2 CH3COOH → Ba(CH3COO)2 + H2O + CO2
Ba(OH)2 + 2 CH3COOH → Ba(CH3COO)2 + 2 H2O
BaO + 2 CH3COOH → Ba(CH3COO)2 + H2O


  • Compound collecting
  • Make acetone
  • Make glacial acetic acid



Barium acetate is soluble in water, which makes it toxic. Solutions of soluble sulfate salts, such as Epsom salt (magnesium sulfate) or sodium sulfate may be given as first aid for barium poisoning, as they precipitate the soluble barium to the insoluble (and non-toxic) barium sulfate.


In closed plastic or glass bottles, away from acidic vapors.


Barium acetate can be precipitated to the non-toxic barium sulfate by adding sodium or magnesium sulfate to its solution. The resulting barium sulfate doesn't require special disposal and can be dumped in trash.


  1. Краткий справочник химика. - Под ред. Перельмана В.И. - М.-Л.: Химия, 1964 (A quick reference book of a chemist. - Ed. Perelman V.I. - M.-L .: Chemistry, 1964)
  2. Справочник экспериментальных данных по растворимости солевых систем. - Т. 4. - Л.: ГНТИХЛ, 1963 pp. 2630 (Handbook of experimental data on the solubility of salt systems. - T. 4. - L .: GNTIHL, 1963 pp. 2630)
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961 (Solubility Handbook. - Vol. 1, Book 1. - M.-L .: IAN USSR, 1961)
  4. H. Henstock, J. Chem. Soc., 1934, 1340-1343
  5. Franzosini P., Sanesi M. Thermodynamic and transport properties of organic salts. - IUPAC Chemical Data Series, No. 28. - Pergamon Press, 1980 pp. 104

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