Couple of points Inert recrystalisation Although picky I think the following sentance needs re wording Solvents should therefore not react chemically with the dissolved compounds they have to be inert I can think of several instances in which solvents also act as reagents most notably the birch reduction both ammonia and ethanol formation of nucleophiles such as alkoxides to name but a few An important point which should also be noted linked is the process of recrystalisation dant1 t