Apologies, never seen a benzo wacker.
Swim has stored impure ketone in the freezer after neutralising the acid without too many problems.
If you have a mixture of DCM and raw ketone do the following: Wash order is 2 x Bicarb, 2 x DH2O, 1 x Brine.
Store in cool and distill A.S.A.P.
Try to supply more detailed info when you want help.
Do not store DCM in the Refridgerator/Freezer in a metal container. On a particularly hot day SWIM tried to cool down a drum of DCM in the refridgerator, in order to keep fuming to a minimum prior to opening, only to find that the drum had virtually imploded.