Recrystallisation - purifying an impure solid

Method of recrystallisation:

How can the crystals be recovered?

• the crystals of your compound can then be recovered by filtering once more (and washing with cold solvent to remove further filtrate if necessary)

• the soluble impurities will pass through the filter by the crystals won’t

• (Note that any solvent used will used to wash with must be cold to avoid redissolving the crystals and reducing the yield)

What is the advantage of recrystallisation?

• get a purer product

What is the disadvantage of recrystallisation?

• reduces % yield - due to transfer losses (lots of steps)