Volatile solvents, such as ethanol, butane, propane or hexane, may be used to prepare extracts, but can and will possibly lead to fire and explosion hazards in uncontrolled environments.
[3][4][5] Supercritical carbon dioxide (CO2) extraction alleviates concerns of fire and explosion and results in a high-quality product.
[5] In Colorado, the Marijuana Enforcement Division (MED) regulates almost every facet of the cannabis seed-to-sale process.
This helps protect plant's content matter, aroma and flavor.
This article incorporates public domain material from What You Should Know About Marijuana Concentrates (Also Known as THC Extractions) (PDF).