Hi Jees!!

I've only worked with xylene, never toluene.  From what I understand they work in a comparable way. 

Using xylene, I was able to pull most of the alkaloids from a 100 gram mimosa extraction with the first 100 ml room temperature pull.  

I experienced no emulsions, but neither do I usually with naphtha, I use an A/B extraction with sufficient basing with NaOH, if I like I can shake the two layers together and the solvent quickly begins to migrate to the top, a black sparkly mixture, like diamonds in charcoal, it is very pretty. 

Best of luck, happy labors!!