Ultimate Cocaine/Levamisole Separation Guide (Phenyltetrahydroimidazothiazole (i.e., levamisole, dexamisole, or tetramisole) )

Cocaine is cut with levamisole at the source and it has been difficult if not impossible to separate until recently.

The process goes like this: Cocaine HCl --> freebase with ammonia --> dissolve in hexane --> wash with water 5 times --> convert back to cocaine HCl

Chemicals you'll need:
Hexane (look for it at the hardware stores)
Distilled water (buy it at the supermarket)
HCl aka Muriatic Acid (buy it at the hardware store)
pH paper or pH meter (hardware or gardening store)
Ammonia (buy it at the supermarket, get the clear unscented kind) OR use baking soda (dissolve 84g in 1L of water, heat it if you must, cool down, then add drop by drop until pH goes up to 8-9).

Equipment:
Separatory funnel or large syringe
Eyedropper pipette (buy it at the pharmacy)
Filter paper
plastic coffee stirrer or glass stirrer rod
vacuum pump (optional) or oven

Take 10g of powdered cocaine and dissolve it in 20ml of water.
Add a few drops of ammonia until the ph is 8-9. The solution will turn milky white.
Filter out the cocaine base and discard the water.
Put the cocaine base back into the container. Some of it will remain on the filter paper.
Wash it off with the hexane into the container.
Add 80ml of hexane and all of the cocaine base will dissolve.
Add 20ml of water and mix with a plastic coffee stirrer
Use separatory funnel to separate the water layer and throw it out.
Repeat by adding 20ml water, stirring, separating it, and discarding the water 4 more times.
Now you have pure cocaine base without levamisole dissolved in the hexane.

You can now HCl gas the hexane to get cocaine HCl that you can filter out and let dry.
OR
Add 20ml of water and a few drops of HCl until pH 3-4, add the water to the hexane, stirr, and separate the water with separatory funnel.
You can boil off the water under high vacuum at room temperature and get the pure and dry cocaine HCl
You can boil the water on the stove but watch over it and as soon as all of the water evaporates turn off the heat, otherwise the coke will burn.
If you have a heating plate that you can regulate the temperature on then set it to 120 Celcius. You can do this in the oven too, set temp to 120 Celcius.
When all of the water has completely evaporated, you are done.

Reference: http://www.dea.gov/pr/microgram-journals/2013/mj10-1_12-16.pdf (open in Tails or Virtual Box or don't open at all)

"The three mixtures of cocaine base/tetramisole base (85:15,
70:30, 50:50) were dissolved in hexane and washed with water
repeatedly. As illustrated in Table 2, tetramisole base in the
85:15 and 70:30 mixtures was completely removed from the
hexane after washing with water five times due to its preferen-
tial solubility in water versus cocaine. After five washes of the
50:50 mixture, 99+% pure cocaine was obtained. FTIR spectra
of the 50:50 mixture before and after the water purification are
shown in Figure 2. The major areas of interference are found
between 1800 - 1200 cm. After five water washes, the
mentioned interferences were removed from the IR
spectrum (lower Figure 2). This procedure was also performed
with ether (instead of hexane); however, it was unsuccessful."