color

If my 2 different batches of methylone have this color after recrysatlization of the methylone HCl, how can I make the crystals transparent in color, I think they look like this because of the impurities, (the white powder photo is the hydrochloride of methylone) before recrystallization.

This is very frustrating, Most Chinese suppliers sell such cathinone precursor powder in brown color, and other users tell me that it is white crystalline powder, because according to them the brown color is due to impurities, some real expert who knows can Answer my question? I don't know who...