Creating Homemade Ferrofluid: Choosing the Right Solvent and Preventing Stains

[itoero]

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.

 

[anorlunda]

I mix MICR toner with vegetable oil (or oleic acid) or kerosene.

I don't know about your other questions, but mineral oil does not spoil or smell bad, nor is it particularly flammable.

 

[Karmaslap]

Nor would iron powder oxidize inside of an oil.