Ethanol Extraction

Ethanol dissolves cannabinoids and terpenes readily, and it is easy to scale, which is why many processors use it. The main variable is temperature. Warm or room-temperature ethanol works fast but also pulls chlorophyll and plant waxes, so the crude extract is darker and needs more cleanup. Cold ethanol, with the solvent and often the biomass chilled well below freezing, grabs the cannabinoids quickly while more of the chlorophyll stays behind in the plant. Either way, the ethanol is then evaporated and recovered, and the extract usually goes on to winterization to drop out the remaining waxes.

The comparison most people want is ethanol versus CO2 extraction. CO2 uses pressurized carbon dioxide and leaves no liquid solvent to evaporate. Ethanol is cheaper to set up and can recover a high share of the cannabinoids in the plant, though that figure comes from an equipment maker that sells both kinds of machines, so read it as a vendor claim (extraktLAB, checked October 2026). The same source argues that denatured ethanol, which carries added chemicals, is a residue risk, while food-grade ethanol is the version used for consumable extracts. Which one makes a better oil depends on the processor's care, not the label.

What matters to you as a buyer is the residual solvents panel on the batch COA. Because ethanol is the solvent, a good report lists it with the result and the limit. We do not claim one method beats the other for every bottle, and we cannot tell you from a method name alone how clean a batch is. Look at the report for your batch number, and ask the brand which solvent and temperature they use.