Question

how do you purify Biphenyl contaminated with Fluorene? what is the method and solvent?

Answer 1

I have never separated these two compounds but the following information may be useful to you. The Merck Index gives diphenyl soluble in alcohol and ether. The Merck Index lists fluorene as freely soluble in glacial acetic acid, soluble in carbon disulfide, ether, benzene, and hot alcohol. Also, The Merck Index lists fluorene as being easily sublimed at high vacuum. With a litle lab work this may provide enough data to forge a procedure; e.g., if diphenyl is not soluble in glacial acetic acid, this would be a perfect way to dissolve all of the fluorene with losing any diphenyl. I hope this helps. (I looked on the web but didn't find anything useful. That doesn't mean it isn't there.)