There is a way to do this technique. Do it EXACTLY THE WAY IT IS WRITTEN.
Do this ONE TIME just like it is written.
This technique, done by the book ONE TIME will answer every question you have about it. If you don't have a thermometer go buy one. Do it just like DA MAN says.
Geezmeister went out and bought four boxes of white sixties. He obediently followed the procedure, since VE would not answer any of his silly little questions, being smartassed enough to know the procedure would answer them for him.
First time, less than two hours start to finish...well, less the absolute drying time for all the MEK to evaporate off.
Yield: 98.3% Go figure. Total of 9.6 grams of fine white pseudo HCL crystals just like the ones Geez has been harvesting from the xylene clean pseudo precipitation technique. Mind you, I haven't reacted these yet. I have not recrystalized these yet. I am as dubious as I can be because frankly, this is too good to be true, and you probably know my attitude about things that are too good to be true. Most of them are.
I poured the greenish-yellowish rinse MEK into the jar with the naptha/xylene and it looks just like the solvents look after I do xylene, naptha, MEK and acetone boils before extracting. And I already have that pseudo HCl in the filter drying. IT LOOKS FINE.
My mind tells me that VideoEditor has done it again. He has combined the weaknesses of a couple of solvents with the strength of another, anticipated the timing and use, and combined several different concepts in ways they have not been combined before. The use of naptha as a gakk solvent during the extraction of the pseudo HCl by the IPA alcohol is a stroke of genius I would never have struck upon. The added benefit of using the naptha to drive out the remnants of moisture from the IPA is brilliant. The yield leaves me with only one thought, and that is why the hell I let him figure this out. Man, I wish I could have claimed I thought this one up.
VideoEditor deserves the Nobel Prize in foilant foiling and is hereby nominated for the position of Professor Emeritus and Department Chairman, College of Extractomania, Hive University.
You outdid yourself again, my man. My hat is off to you!