Barium acetate

Barium acetate[1]
IUPAC name Barium acetate
Other names Barium diacetate
Identifiers
Abbreviations	Ba(OAc)2
CAS number	543-80-6 Y
ChemSpider	10515 Y
UNII	FBA31YJ60R Y
Jmol-3D images	{{#if:[Ba+2].[O-]C(=O)C.[O-]C(=O)C|Image 1
SMILES [Ba+2].[O-]C(=O)C.[O-]C(=O)C
InChI InChI=1S/2C2H4O2.Ba/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 Y Key: ITHZDDVSAWDQPZ-UHFFFAOYSA-L Y InChI=1/2C2H4O2.Ba/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 Key: ITHZDDVSAWDQPZ-NUQVWONBAA
Properties
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
Hazards
Main hazards	Hazardous on ingestion
LD50	921 mg/kg (oral, rat)
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

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

Preparation

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

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

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

BaS + 2 CH₃COOH → (CH₃COO)₂Ba +H₂S

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

Properties

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]}

Reactions

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.

Uses

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.

References

Further reading

• I. Gautier-Luneau; A. Mosset (1988). "Crystal structure of anhydrous barium acetate". Journal of Solid State Chemistry 73 (2): 473–479. Bibcode:1988JSSCh..73..473G. doi:10.1016/0022-4596(88)90133-8.