[Sophia7X]

So for the next chemistry club meeting in my high school, I'm planning to have everyone make ferrofluid. I've read that the MICR toner + vegetable oil + rare earth magnet method (from HouseholdHacker on Youtube) doesn't work in the sense that you don't get the spikes. Can someone confirm if this actually works or doesn't work?

Also, I found this way -involving FeCl3, etc: http://chemistry.about.com/od/demonstrationsexperiments/ss/liquidmagnet_2.htm
but it seems too laborious to do in a one hour club meeting.

Does anyone know a reliable way to make ferrofluid that will have the spikes?
 

[discodermolide]

So for the next chemistry club meeting in my high school, I'm planning to have everyone make ferrofluid. I've read that the MICR toner + vegetable oil + rare earth magnet method (from HouseholdHacker on Youtube) doesn't work in the sense that you don't get the spikes. Can someone confirm if this actually works or doesn't work?

Also, I found this way -involving FeCl3, etc: http://chemistry.about.com/od/demonstrationsexperiments/ss/liquidmagnet_2.htm
but it seems too laborious to do in a one hour club meeting.

Does anyone know a reliable way to make ferrofluid that will have the spikes?
 

Try this link
http://pubs.acs.org/doi/abs/10.1021/ed076p943