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Sigma-Aldrich

1-Ethyl-3-methylimidazolium tetrafluoroborate

for electrochemistry, ≥99.0% (HPLC)

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Synonym(s):
EMIMBF4
Empirical Formula (Hill Notation):
C6H11BF4N2
CAS Number:
Molecular Weight:
197.97
MDL number:
PubChem Substance ID:
NACRES:
NA.22

grade

for electrochemistry

Quality Level

assay

≥99.0% (HPLC)

form

liquid

impurities

≤200 ppm water

refractive index

n20/D 1.413 (lit.)

bp

>350 °C (lit.)

mp

15 °C (lit.)

density

1.294 g/mL at 25 °C (lit.)

anion traces

bromide (Br-): ≤10 mg/kg
chloride (Cl-): ≤10 mg/kg
nitrate (NO3-): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

SMILES string

F[B-](F)(F)F.CCn1cc[n+](C)c1

InChI

1S/C6H11N2.BF4/c1-3-8-5-4-7(2)6-8;2-1(3,4)5/h4-6H,3H2,1-2H3;/q+1;-1

InChI key

CUNYTRQQXKCRTJ-UHFFFAOYSA-N

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1 of 4

This Item
4.900497117214.90205
form

liquid

form

liquid

form

liquid

form

liquid

grade

for electrochemistry

grade

-

grade

-

grade

-

impurities

≤200 ppm water

impurities

-

impurities

≤0.5% water

impurities

-

bp

>350 °C (lit.)

bp

-

bp

>350 °C (lit.)

bp

-

anion traces

bromide (Br-): ≤10 mg/kg, nitrate (NO3-): ≤10 mg/kg

anion traces

-

anion traces

-

anion traces

-

Application

1-Ethyl-3-methylimidazolium tetrafluoroborate is a room temperature ionic liquid widely used as an electrolyte in electrochemical studies. Its diffusion coefficient, 13C spin-lattice relaxation times, and nuclear Overhauser enhancements have been analyzed using NMR techniques to study its hydrogen bonding. Some of its fundamental physical and chemical properties such as density, viscosity, thermal stability, surface tension, refractive index and pH have been studied over a wide range of temperature.

pictograms

Exclamation markEnvironment

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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NMR evidence of hydrogen bonding in 1-ethyl-3-methylimidazolium-tetrafluoroborate room temperature ionic liquid
Huang JF, et al.
Inorgorganica Chimica Acta, 320(1-2), 7-11 (2001)
Electrochemical study of copper in a basic 1-ethyl-3-methylimidazolium tetrafluoroborate room temperature molten salt
Chen PY and Sun IW
Electrochimica Acta, 45(3), 441-450 (1999)
Physical and electrochemical properties of 1-alkyl-3-methylimidazolium tetrafluoroborate for electrolyte
Nishida T, et al.
Journal of Fluorine Chemistry, 120(2), 135-141 (2003)
The Room Temperature Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate: Electrochemical Couples and Physical Properties.
Fuller J, et al.
Journal of the Electrochemical Society, 144(11), 3881-3886 (1997)
Sungwon Lee et al.
Nature communications, 5, 5898-5898 (2014-12-20)
To measure electrophysiological signals from the human body, it is essential to establish stable, gentle and nonallergic contacts between the targeted biological tissue and the electrical probes. However, it is difficult to form a stable interface between the two for

Articles

Over the past decade, Ionic Liquids have attracted much interest for their use as non-aqueous electrolytes in electrochemical applications. In this context, their conductivity as well as their electrochemical stability are the most important physical properties.

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