1-Butyl-3-methylimidazolium tetrachloroferrate
| Identifiers | |
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3D model (JSmol)  | 
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| ChemSpider | |
| ECHA InfoCard | 100.203.250 | 
| EC Number | 
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PubChem CID  | 
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CompTox Dashboard (EPA)  | 
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| Properties | |
| C8H15Cl4FeN2 | |
| Molar mass | 336.87 g·mol−1 | 
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
Infobox references  | |
1-Butyl-3-methylimidazolium tetrachloroferrate is a magnetic ionic liquid. It can be obtained from 1-butyl-3-methylimidazolium chloride and ferric chloride. It has quite low water solubility.
Due to the presence of the high spin FeCl4 anion, the liquid is paramagnetic and a magnetic susceptibility of 40.6 × 10−6 emu g−1 is reported. A simple small neodymium magnet suffices to attract the liquid in a test tube.