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Sigma-Aldrich

1-Butyl-3-methylimidazolium acetate

≥96.0% (HPLC)

Synonym(s):

1-Butyl-3-methyl-1H-imidazol-3-ium acetate, 1-Methyl-3-butylimidazolium acetate

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About This Item

Empirical Formula (Hill Notation):
C10H18N2O2
CAS Number:
284049-75-8
Molecular Weight:
198.26
MDL number:
MFCD06798175
UNSPSC Code:
12352100
PubChem Substance ID:
329753480
NACRES:
NA.22

Quality Level

100

Assay

≥96.0% (HPLC)

form

liquid

impurities

≤1.0% water

SMILES string

CC([O-])=O.CCCCn1cc[n+](C)c1

InChI

1S/C8H15N2.C2H4O2/c1-3-4-5-10-7-6-9(2)8-10;1-2(3)4/h6-8H,3-5H2,1-2H3;1H3,(H,3,4)/q+1;/p-1

InChI key

BSKSXTBYXTZWFI-UHFFFAOYSA-M

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General description

1-Butyl-3-methylimidazolium acetate is a room temperature ionic liquid. It is reported to irreversibly adsorb gaseous CO2, therefore can be a useful means for the separation of greenhouse gas. CO2 has been reported to readily dissolve in 1-butyl-3-methylimidazolium-acetate. It also forms reversible molecular complex with CO2 in the ratio of 1 (CO2) : 2 (1-butyl-3-methylimidazolium-acetate).

Application

1-Butyl-3-methylimidazolium acetate may be used to effectively capture CO2 from post-combustion flue gas. It may be used in the preparation of 1-butyl-3-methylimidazolium-2-carboxylate via carboxylation with CO2.

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Laura E Barrosse-Antle et al.
Chemical communications (Cambridge, England), (25)(25), 3744-3746 (2009-06-27)
Gaseous CO(2) is almost irreversibly absorbed by the room temperature ionic liquid 1-butyl-3-methylimidazolium acetate ([C(4)mim][Ac]) in which it undergoes a chemically irreversible, one electron electrochemical reduction, suggesting a means for the sequestration of the greenhouse gas.
Marcel Besnard et al.
Chemical communications (Cambridge, England), 48(9), 1245-1247 (2011-12-14)
The formation of 1-butyl-3-methylimidazolium-2-carboxylate in the mixture of CO(2) with 1-butyl-3-methylimidazolium acetate under mild conditions (298 K, 0.1 MPa) has been put in evidence in the liquid phase using Raman and infrared spectroscopy complemented by DFT calculations and NMR ((1)H
Carbon dioxide capture using ionic liquid 1-butyl-3-methylimidazolium acetate.
Shiflett MB, et al.
Energy and Fuels, 24(10), 5781-5789 (2010)

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