Cocaine Production
Learn how cocaine is produced, from coca cultivation in the Andes to the chemistry of cocaine hydrochloride and base.
Learn how cocaine is produced, from coca cultivation in the Andes to the chemistry of cocaine hydrochloride and base.
Coca cultivation
Coca shrubs grow best in warm, humid Andean foothills between 500 and 2,000 meters elevation. Two main species, Erythroxylum coca and Erythroxylum novogranatense, produce most commercial cocaine.
Farmers plant seedlings or cuttings, tend fields for one to three years, and harvest leaves several times per year. Cultivation has expanded into protected areas and Indigenous territories.
Ideal growing conditions
Coca needs well-drained soil, rainfall, and warm days with cool nights. It flourishes on steep slopes that are difficult for law enforcement to access.
Harvesting
Leaves are picked by hand, dried in the sun, and sold to collectors who transport them to processing sites.
Yields
Leaf alkaloid content varies by variety, soil, altitude, and processing. Coca var. coca typically has the highest cocaine content.
Environmental impact
Expansion drives deforestation, soil erosion, and water pollution from agrochemicals and processing chemicals.
Extraction and processing
Coca leaves are macerated with water and an alkaline agent such as cement or lime. An organic solvent like kerosene or gasoline extracts the alkaloids, producing coca paste.
The paste is then acidified, re-basified, and filtered to create cocaine base. Further treatment with hydrochloric acid crystallizes cocaine hydrochloride.
Coca paste production
Leaves are soaked, stomped, and mixed with solvent. The solvent is separated and evaporated, leaving crude coca paste containing residual chemicals.
Base conversion
Coca paste is dissolved in dilute acid, filtered, and treated with a base to precipitate cocaine base. The base is dried into a solid.
Hydrochloride crystallization
Cocaine base is dissolved in solvent and reacted with hydrochloric acid gas. The resulting salt crystallizes, is filtered, and dried into powder.
Pressing and branding
Powder is often pressed into one-kilogram bricks, wrapped in plastic or tape, and stamped with logos before shipment.
Quality and contamination
Clandestine labs rarely remove all solvents, heavy metals, or byproducts. Adulterants such as levamisole, phenacetin, lidocaine, caffeine, and fentanyl are frequently added along the supply chain.
Purity testing
Gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) can identify cocaine, metabolites, and cutting agents. Field reagents give preliminary results but cannot quantify purity.