Question

Can I purify Biphenyl through boiling even if the the water doesn't reach its boiling point? Or should I mix it with hexane and then recrystalize it?

Answer 1

The first consideration in purifying a solid by recrystallization is to find a suitable solvent. There are four important properties that you should look for in a good solvent for recrystallization. The compound should be very soluble at the boiling and Add hot hexanes until the no more solid dissolves and only impurities remain.

Filter the impurity using suction filtration into a 125 mL sidearm flask. Transfer the liquid into a small beaker, and evaporate the hexanes by blowing air or nitrogen over the solution until only the partially purified biphenyl is left.

Therefore, purify Biphenyl through a mix with hexane and then recrystalize it