ChemE
Rising Star
I was just trying to help out everyone with a good A/B/A/B tech cause that is really the way it should be done. do the first A/B however you want to its not what i was trying to go after anyway. Just dry the solvent. Do an acid extraction. boil off some of the aqueous layer to remove the remaining solvent and reduce volume. then just add base filter and wash with freezing ammonia. its not hard and is much much faster than freezing. there is nothing left in the solvent like there is with freezing. along with no residue form the solvent itself which isn't always removed with an ammonia wash and has a very high potential to be carcinogenic especially if xylene is used at all but all of them are bad. and any process involving base is going to be dangerous whether your using plastic or glass if your actual lab setup isn't good, your going to mess something up, but i noticed there is a safety section of the forum so ill leave all that out and go there for anything involving that.