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Homemade ferrofluid in bottle

  1. Jan 24, 2016 #1
    I ordered MICR toner powder and want to make a ferromagnetic fluid and keep it in a bottle.

    -First I need to make the ferrofluid.
    I mix MICR toner with vegetable oil (or oleic acid) or kerosene.
    Which of the two should I use?
    What's the difference?

    -I will put the ferrofluid in water.
    On YouTube I saw a video in which someone used 70% ethanol/30% water.
    Doesn't the oil of the ferrofluid solve in ethanol?

    -How can I prevent stains from the ferrofluid on the glass of the bottle?

    -Can I use iron powder to make the ferrofluid?

    I hope someone can help me. I don't want to mess it up.:smile:
  2. jcsd
  3. Jan 24, 2016 #2


    Staff: Mentor

    I don't know about your other questions, but mineral oil does not spoil or smell bad, nor is it particularly flammable.
  4. Jan 27, 2016 #3
    Nor would iron powder oxidize inside of an oil.
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