[nabontra]

Has anyone had trouble producing ferrofluid where the magnetite never synthesizes?  I'm following the directions posted on an About.com article.

http://chemistry.about.com/od/demonstrationsexperiments/ss/liquidmagnet.htm

After mixing the ferric chloride and the ferrous chloride, I slowly stir in the proper amount of ammonia, but the solution just becomes a brown slurry with black specks.  Is there a better way to produce the ferrofluid than this method?  I need to produce about a quart, and most of the websites selling it premade want $30 for only 10mL.

Thank you in advance for any *delete me*

-Nick