Original sentence: Crack cocaine is usually purchased in rock form already,.[[Image:crackspoon.jpg|thumb|300px|right|
Edited sentence: Baking 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.Because of the dangers for.Coupled with the fact that crack is considered more potent than cocaine hydrochloride, users obtain an intense high much more quickly than with the normal method of insufflating ("sniffing" or "snorting") the powdered cocaine.Crack cocaine is usually purchased in rock form already, although it is not uncommon for some users to "wash up" or "cook" the cocaine into crack themselves.Crack cocaine may be reprocessed in small quantities with water (users refer to the resultant product as "cookback").It is at this point, that the oil is picked rapidly, usually with a pin or long thin object.Once mixed and heated, the bicarbonate breaks down into carbon dioxide and sodium carbonate, which then reacts with the hydrochloride from the cocaine molecule, leaving cocaine as an oily free base.Once separated from the hydrochloride, the cocaine alkaloid floats to the top of the now leftover liquid.The "rock" that is thus formed also contains a small amount of water.The end result is that the cut, in addition to the ammonium salt (NH4Cl), remains in the freebase cocaine after the mixture has evaporated.The net reaction when using sodium bicarbonate (NaHCO3, common baking soda) is:.This acts as a filler which extends the overall profitability of illicit sales.This process is done with baking soda (sodium bicarbonate), water, and a spoon.This pulls the oil up and spins it, allowing air to set and dry the oil, and allows the user and/or maker to roll the oil into the rock-like shape.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.Typically, filtration processes are also omitted.When commonly "cooked" the ratio is 3:4 parts cocaine per bicarbonate.manufacturers of using ether to produce pure freebase cocaine, producers began to omit the step of removing the freebase precipitate from the ammonia mixture