Barium acetate

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Barium acetate[1]
Barium acetate.png
Abbreviations Ba(OAc)2
CAS number 543-80-6 YesY
ChemSpider 10515 YesY
Jmol-3D images Image 1
Molecular formula C4H6BaO4
Molar mass 255.42 g mol−1
Appearance White solid
Odor odorless
Density 2.47 g/cm3 (anhydrous)
2.19 g/cm3 (monohydrate)
Melting point 450 °C (842 °F; 723 K)
Solubility in water 55.8 g/100 mL (0 °C)
72 g/100mL (20 °C)
Solubility slightly soluble in ethanol
Main hazards Hazardous on ingestion
LD50 921 mg/kg (oral, 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

Barium acetate (Ba(C2H3O2)2) is the salt of barium(II) and acetic acid.


Barium acetate is generally produced by the reaction of acetic acid with barium carbonate:[2]

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

The reaction is performed in solution and the barium acetate crystallizes out. Alternatively, barium sulfide can be used:[2]

BaS + 2CH3COOH → (CH3COO)2Ba +H2S

Again, the solvent is evaporated off and the barium acetate crystallized.


Barium acetate is a white powder, which is highly soluble: at 0 °C, 55.8 g of barium acetate can be dissolved in 100 g of water. It decomposes upon heating into barium carbonate.[citation needed]


When heated in air, barium acetate decomposes to the carbonate. It reacts with acids: reaction with sulfuric acid, hydrochloric acid and nitric acid give the sulfate, chloride and nitrate respectively.


Barium acetate is used as a mordant for printing textile fabrics, for drying paints and varnishes and in lubricating oil. In chemistry, it is used in the preparation of other acetates; and as a catalyst in organic synthesis.

A powerful poison, it was featured in an episode of Forensic_Files_(season_6) (episode 76) wherein a daughter kills her father.


  1. ^ [1], JT Baker
  2. ^ a b Barium acetate,, retrieved 30 June 2009

Further reading[edit]