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1-Ethyl-3-methyl-imidazolium tetrafluoroborate (EMIM BF4), 10 g

From  proionic
≥99,9 %, Electronic Grade
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EMIM BF4
Empirical formula C6H11N2BF4
Molar mass (M) 197.97 g/mol
Density (D) 1,279 g/cm³
Flash point (flp) 200 °C
Melting point (mp) 14 °C
WGK 1
CAS No. 143314-16-3


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Art. No. 20NA.1

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1-Ethyl-3-methyl-imidazolium tetrafluoroborate (EMIM BF4) ≥99,9 %, Electronic Grade

Technical Information
Storage under inert gas recommended 
1-Ethyl-3-methyl-imidazolium tetrafluoroborate (EMIM BF4)
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20NA.1 10 g glass

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20NA.2 50 g glass

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General information

Ionic Liquids

Ionic liquids are salts which are available in a liquid state over a wide temperature range. Ionic liquids are composed of organic cations and organic or inorganic anions. Due to their fully ionic structure, they display a variety of interesting properties.

  • Negligible vapor pressure
  • Excellent chemical and thermal stability
  • Low-melting with melting point under 100 °C
  • High solubility to a wide range of substances and biopolymers
  • Uncomplicated and safe handling compared to conventional solvents
  • More environmentally friendly alternative to volatile, ecologically problematic organic solvents


Chemical and physical properties of ionic liquids:

Art. No. Ionic liquid Short name Density Melting point (°C) Viscosity (cP) Conductivity (mS/cm) Thermal stability / pyrolysis
2010 1-Butyl-3-methyl-imidazolium-chloride BMIM Cl n. e. 65 n. e. n. e. approx. 200 °C*
2012 1-Butyl-3-methyl-imidazolium-hexafluorophosphate BMIM PF6 1,372 (23 °C) -8 267,1 (25 °C) 1,373 (20 °C) approx. 200 °C, with water hydrolysis under HF formation*
2014 1-Butyl-3-methyl-imidazolium-tetrafluoroborate BMIM BF4 1,205 (22 °C) -75 103,5 (25 °C) 3,145 (20 °C) approx. 200 °C, with water hydrolysis under HF formation*
2015 1-Butyl-3-methyl-imidazolium-trifluoromethanesulphonate BMIM OTf 1,299 (24 °C) 16 80 (25 °C) 3,049 (20 °C) <250 °C*
2021 1-Butyl-1-methyl-pyrrolidinium-bis-(trifluoromethylsulphonyl)-imide BMPyrr BTA 1,395 (23 °C) -18 94,4 (20 °C) 2,12 (20 °C) <250 °C*
2022 1-Butyl-1-methyl-pyrrolidinium-dicyanamide BMPyrr DCA 1,023 (20 °C) -55 46,4 (20 °C) 10,83 (30 °C) <80 °C / >80 °C discolouration*
2025 Butyl-trimethyl-ammonium-bis-(trifluoromethylsulphonyl)-imide N1114 BTA 1,395 (24 °C) 7 106 (21 °C) 2,861 (30 °C) <250 °C*
2028 Choline-dihydrogenphosphate Choline DHP n. e. 190 n. e. n. e. n. e.
2035 Ethylammonium-nitrate EAN 1,209 (26 °C) 9 36,5 (25 °C) 25,36 (30 °C) n. e.
2037 1-Ethyl-3-methyl-imidazolium-bromide EMIM Br n. e. 91 n. e. n. e. approx. 200 °C*
2053 1-Ethyl-3-methyl-imidazolium-dicyanamide EMIM DCA 1,101 (26 °C) -21 16,8 (21 °C) 25,3 (21 °C) <80 °C / >80 °C discolouration*
2054 1-Ethyl-3-methyl-imidazolium-ethylsulphate EMIM EtSO4 1,241 (24 °C) n. e. 94,2 (25 °C) 5,560 (30 °C) n. e.
2056 1-Ethyl-3-methyl-imidazolium-methanesulphonate EMIM OMs 1,242 (23 °C) n. e. 134,5 (25 °C) 3,693 (30 °C) <250 °C*
2059 1-Ethyl-3-methyl-imidazolium-thiocyanate EMIM SCN 1,119 (25 °C) -6 24,7 (20 °C) 17,87 (20 °C) <80 °C / >80 °C discolouration*
2062 1-Ethyl-3-methyl-imidazolium-trifluoromethansulphonate EMIM OTf 1,386 (25 °C) -9 39,8 (25 °C) 9,842 (30 °C) <250 °C*
2064 1-Hexyl-3-methyl-imidazolium chloride HMIM Cl 1,041 (26 °C) -75 3302 (35 °C) 0,076 (30 °C) <200 °C*
2069 1-Hexyl-3-methyl-imidazolium-hexafluorophosphate HMIM PF6 1,298 (23 °C) -61 464,7 (25 °C) 0,076 (30 °C) <200 °C, with water hydrolysis under HF formation*
2070 1-Hexyl-3-methyl-imidazolium-tetrafluoroborate HMIM BF4 1,148 (24 °C) -82 288,3 (20 °C) 1,176 (20 °C) <200 °C, with water hydrolysis under HF formation*
2076 1-Methyl-3-octyl-imidazolium-hexafluorophosphate OMIM PF6 1,237 (24 °C) -70 608,3 (25 °C) 0,444 (30 °C) <200 °C, with water hydrolysis under HF formation*
2081 1-Methyl-3-octyl-imidazolium-tetrafluoroborate OMIM BF4 1,106 (19 °C) -81 760,3 (20 °C) 1,266 (30 °C) <200 °C, with water hydrolysis under HF formation*
2091 1-Methyl-3-propyl-imidazolium-iodide PMIM I 1,542 (24 °C) n. e. 1385 (20 °C) 0,958 (30 °C) n. e.
2095 1-Methyl-1-propyl-piperidinium-bis-(trifluoromethylsulphonyl)- imide PMPip BTA 1,413 (23 °C) 9 175,5 (25 °C) 2,124 (30 °C) approx. 250 °C*
2096 Triethylsulfonium-bis-(trifluoromethylsulphonyl)-imide S222 BTA 1,462 (24 °C) n. e. 38,9 (20 °C) 5,12 (25 °C) n. e.
*Experience values, not guaranteed / n.e. = not evaluated

Solubility of ionic liquids:

Art. No. Ionic liquid Short name Water Isopropanol Acetone Acetonitrile Toluene Heptane
2010 1-Butyl-3-methyl-imidazolium-chloride BMIM Cl Y Y Y Y N N
2012 1-Butyl-3-methyl-imidazolium-hexafluorophosphate BMIM PF6 N N Y Y N N
2014 1-Butyl-3-methyl-imidazolium-tetrafluoroborate BMIM BF4 Y N Y Y N N
2015 1-Butyl-3-methyl-imidazolium-trifluoromethanesulphonate BMIM OTf Y Y Y Y N N
2021 1-Butyl-1-methyl-pyrrolidinium-bis-(trifluoromethylsulphonyl)-imide BMPyrr BTA N Y Y Y N N
2022 1-Butyl-1-methyl-pyrrolidinium-dicyanamide BMPyrr DCA Y Y Y Y N N
2025 Butyl-trimethyl-ammonium-bis-(trifluoromethylsulphonyl)-imide N1114 BTA N Y Y Y N N
2028 Choline-dihydrogenphosphate Choline DHP Y N N N N N
2035 Ethylammonium-nitrate EAN Y Y Y Y N N
2037 1-Ethyl-3-methyl-imidazolium-bromide EMIM Br Y Y N Y N N
2053 1-Ethyl-3-methyl-imidazolium-dicyanamide EMIM DCA Y Y Y Y N N
2054 1-Ethyl-3-methyl-imidazolium-ethylsulphate EMIM EtSO4 Y Y Y Y N N
2056 1-Ethyl-3-methyl-imidazolium-methanesulphonate EMIM OMs Y Y Y Y Y N
2059 1-Ethyl-3-methyl-imidazolium-thiocyanate EMIM SCN Y Y Y Y N N
2062 1-Ethyl-3-methyl-imidazolium-trifluoromethansulphonate EMIM OTf Y Y Y Y T N
2064 1-Hexyl-3-methyl-imidazolium chloride HMIM Cl Y Y Y Y N N
2069 1-Hexyl-3-methyl-imidazolium-hexafluorophosphate HMIM PF6 N N Y Y N N
2070 1-Hexyl-3-methyl-imidazolium-tetrafluoroborate HMIM BF4 N Y Y Y N N
2076 1-Methyl-3-octyl-imidazolium-hexafluorophosphate OMIM PF6 N N Y Y Y N
2081 1-Methyl-3-octyl-imidazolium-tetrafluoroborate OMIM BF4 N Y Y Y N N
2091 1-Methyl-3-propyl-imidazolium-iodide PMIM I Y Y Y Y N N
2095 1-Methyl-1-propyl-piperidinium-bis-(trifluoromethylsulphonyl)- imide PMPip BTA N Y Y Y T N
2096 Triethylsulfonium-bis-(trifluoromethylsulphonyl)-imide S222 BTA N N Y Y N N
Y = miscibel / N = non miscibel / T = partially miscibel

Certificates of Analysis

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The following analysis certificates have been found:

Type analysis

Appearanceclear liquid
Colour (APHA)≤500
Water content (KF)≤0,008 %
Assay (1-alkylimidazole)≤0.05 %
Fluoride (F-)≤0,3 %
Halogens (exc. fluoride)≤0,001 %
ΔE> 4.5 V, WE: Pt, CE: Pt, RE: W/WO3; 10mV/s ± 1 mA/cm2