TEK - Accurate Processes of evaluating cocaine Purity

[RashleySmashley]

For a while, SWIM has been curious regarding the actual process for determining the purity of various cola samples. SWIM is an earth science major, and aware that chemical analysis would be the only way to get exact % yeilds, but wonders if anyone knows of ways to simply find colas %~ in a given batch. SWIM has read the purification techniques post, & is interested if anyone knows the %~ of the inert cutting agents found in American cola (understands % can greatly vary... SWIM is just attempting to hear experiences or knowledge, all while evading a strong & idiotic desire to do some independant research after class! But SWIM knows NO. ).

Also, if anyone is aware of the ~temp. todays' good cola melts @, and if many of the modern cutting agents have a higher melting point than pure cola & void the melting method.

SWIM still up with the girlfriend & just rambling now... but does anyone out their besides SWIM find this site a comfort while they're showin that Slut some love? SWIM sees that the wacked out thoughts, behavior, and obsession with the Girlfriend is, at least, a shared one! SWIM is upset though, thinking Girlfriend will be gone later tomorrow...

[trptamene]

Did they read the solvent wash purification or the A/B purification....

before modern analytical instruments were invented percentages like this were found by simply doing a A/B workup and weighing the compound/mixture before and after the work up...the % is (weight after)/(weight before) as I'm sure you can figure out.

If one wanted to try to get this as quantitative as possible they might simply weigh the freebase and keep in mind the missing HCl instead of converting it back to the HCl before weighing as this reduces places where product could be lost and thus determinate errors could be reduced. They should also keep in mind that the product may not be pure as non-polar impurities have yet to be gotten rid of...so one may want to TLC the product and see how many spots there are...

If this is not an option they can do the entire A/B work-up and just take extra precautions to make sure the process is as quanititative as possible like using salts to force any extra cocaine base out of the water layer (this should prolly be done anyway, as it is just good practice).

Of course one would want to go on to make the HCl before using it as crack is whack.