1-Butyl-3-methylimidazolium tetrachloroferrate is a magnetic ionic liquid.

It has quite low water solubility.

[1][2] 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.

This article about an organic compound is a stub.