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A/B extraction, now that is serious business.
being able to do one is like tying your shoes, it's mandatory, but I avoid the shit out of it. I did an A)B on some meth last month and precipitated it via hcl dripped into sulfuric acid and the solvent was naptha. I done it on 5g of already-been-smoked brown stuff I pour out of the pipe each time. It was just home work for the gassing which I never done before. That being said I can get anything out of cocaine without an A/B. A triple wash with chloroform methylene chloride, even removes levamisole from the hcl without the need for neutralizing it
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That document seems to have been scrubbed from the web. Perhaps it didn't pass peer review. A shame. In it's absence I'll present to you this document which is the document that everyone cites from " the Microgram journal"when talking about levamisole/cocaine separation. Table 1 specifically
Next I will present to you this document from the Journal of Analytic toxicology that says 79% of samples of illicit cocaine containing PTHIT (levamisole/ dextramisole) contained 30% or less w/w, and 93% contained 40%or less PTHIT relative to cocaine hcl.
So 79% of samples would contain 4.1% or less PTHIT and 93 % of the samples would contain assumably less than 8% PTHIT, after starting at 30-40% after only 1 wash of the HCL with chloroform. This data point was derived by calculating the median figures between the 30% and 50% data points to estimate for the 40% point.
Comparing the data for 5 hexane washes in that same document one could reasonably conclude that subsequent chloroform washes would improve those figured even further.
Hence I maintain my position that a chloroform/water wash on the hcl salt of cocaine is a viable method for extracting levamisole from it.
Next I will present to you this document from the Journal of Analytic toxicology that says 79% of samples of illicit cocaine containing PTHIT (levamisole/ dextramisole) contained 30% or less w/w, and 93% contained 40%or less PTHIT relative to cocaine hcl.
So 79% of samples would contain 4.1% or less PTHIT and 93 % of the samples would contain assumably less than 8% PTHIT, after starting at 30-40% after only 1 wash of the HCL with chloroform. This data point was derived by calculating the median figures between the 30% and 50% data points to estimate for the 40% point.
Comparing the data for 5 hexane washes in that same document one could reasonably conclude that subsequent chloroform washes would improve those figured even further.
Hence I maintain my position that a chloroform/water wash on the hcl salt of cocaine is a viable method for extracting levamisole from it.