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CANNABIS EXTRACTION TECHNIQUES PERFORMED USING GLASS

- Jim Carey, Ph.D.

July/August 2020, Issue 14: Extraction Magazine

During the last several years, extraction of the soluble components of Cannabis sativa has greatly matured. What was done on a very small scale several years ago is now being performed on the order of 1x106 lbs per month scale today. [1] The three main solvents used for extraction are ethanol, hydrocarbon, and supercritical carbon dioxide (CO2).

With ethanol extraction, dried and ground plant material is exposed to ethanol at a controlled temperature. The main disadvantage of this process is that the expensive alcohol is lost in the plant material at the end of the run; even if methods are endeavored to recapture the ethanol, there will still be loss. Ethanol is “Generally Regarded as Safe” (GRAS), which is a key advantage.

Hydrocarbon solvents have high extraction efficiencies and are inexpensive. The dried and ground plant material is exposed to the hydrocarbon, again at controlled temperatures, although some of these solvents, such as ethanol, can be used at room temperature. The key disadvantage of this approach is the flammability of the solvents, which in some cases are potentially explosive. Human exposure must also be safely managed. Solvents in this class have defined health risks with exposure...

To continue reading this article, view/download now. It can be found on page 28.

Extraction Magazine July/August Table of Contents


About Ace Glass Incorporated
Founded 1936 in Vineland, NJ, Ace Glass Incorporated is a leader and innovator of scientific glassware, lab equipment and glass apparatus. The firm's innovations and inventions include the first American made spherical joints and sintered-glass fritted disks. Ace also designed and patented the first internally threaded glassware — Ace Threds® — plus Ace Trubore® Precision Bore Tubing, and their unique Instatherm® oil baths. Ace Glass continues its strong tradition today, meeting the laboratory glassware needs of satisfied customers worldwide.
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