Step 1
Acetone or ether is added to dissolve the cocaine base and the solution is filtered to remove undesirable material.
Step 2
Hydrochloric acid diluted in acetone or ether is added to the cocaine solution. The addition of the hydrochloric acid causes the cocaine to precipitate (crystallise) out of the solution as cocaine hydrochloride. The HCl is then filtered out for drying.
Step 3
The remaining acetone/ether solvent can be discarded or reused.
Step 4
Cocaine HCl is dried under heat lamps, laid out to dry with the aid of fans, or dried in microwave ovens. The yield from 1 kg of base will vary widely, depending on quality of coca base and efficiency of processing, but should be approx. 1 pound.
https://www.thevespiary.org/rhodium/Rhodium/chemistry/coca2cocaine.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/coca2cocaine.html)
https://www.thevespiary.org/rhodium/Rhodium/chemistry/cocaine.illicit.production.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/cocaine.illicit.production.html)