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Your Guide to Ethanol Extraction in Cannabis

In part III of a special extraction series, Mark June-Wells examines ethanol’s properties, the different types of extraction strategies, safety considerations for ethanol systems and laboratory infrastructure considerations.

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For years, flower was king. As long as there was an established pipeline for flower distribution, it was almost impossible for investors to lose money in the early stages of this industry’s growth. While this might remain true in some markets, flower profits are becoming leaner. There has been a significant decrease in flower price in the most mature markets due to the expansion of outdoor growing techniques that produce high-quality flower in large quantities, as well as market saturation driving prices down.

Have you ever drunk grain alcohol? If so, you were drinking ethanol. Ethanol is “a colorless volatile flammable liquid C2H5OH that is the intoxicating agent in liquors and is also used as a solvent and in fuel—called also ethyl alcohol, grain alcohol,” according to Merriam-Webster.

The Food and Drug Administration (FDA) classifies ethanol as a Class 3 solvent with low risk for acute or chronic toxicity in pharmaceutical manufacturing processes where the residual is less than 5,000 ppm or 0.5 percent. The FDA also implies that residual solvents in this category should be limited to 0.5 percent through rigorous quality assurance and quality control programs.

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