I recently made a batch of ferrofluid via the method at http://www.sci-spot.com/Chemistry/liqimag.htm
After finishing, the sides of my erlenmeyer were coated with some leftover magnetite and other brownish stains, likely from the kerosene. Any ideas on
how to clean this off? Washing with water didn't seem to do much, but I'm hoping there's some other solvent I could use. As per the instructions, my
ferrofluid (and thus any residue) contains magnetite particles, oleic acid, and kerosene. |