For reasons of salability, the person reducing the purity will obviously prefer to do so with a substance that does not excessively alter the color or odor, and a bulked batch will commonly contain some level of acetone and bicarbonate. The other 60%-90% can be made up of almost any available substance the chemists and/or dealers have chosen to use. The net reaction when using sodium bicarbonate (NaHCO 3, common baking soda) is:Ĭoc-H +Cl – + NaHCO 3 → Coc + H 2O + CO 2 + NaClĬrack cocaine usually contains 40% cocaine or less, depending on the degree to which it has been bulked out with other substances. This removes the residual bicarbonate, and any adulterants or cuts that have been used in the previous handling of the cocaine and leaves a relatively pure, anhydrous cocaine base. ![]() Crack cocaine may be reprocessed in small quantities with water (users refer to the resultant product as "cookback"). This acts as a filler which extends the overall profitability of illicit sales. When commonly "cooked" the ratio is 3:4 parts cocaine per bicarbonate. The “rock” that is thus formed also contains a small amount of water.īaking soda is now most often used as a base rather than ammonia for reasons of lowered odor and toxicity however, any weak base can be used to make crack cocaine. ![]() The end result is that the cut, in addition to the ammonium salt (NH 4Cl), remains in the freebase cocaine after the mixture has evaporated. ![]() Typically, filtration processes are also omitted. Manufacturers of using ether to produce pure freebase cocaine, producers began to omit the step of removing the freebase precipitate from the ammonia mixture.
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