CO 2 (Carbon Dioxide) extraction uses pressurized carbon dioxide (CO 2) to extract CBD

Benefits of Ethanol Extraction
Ethanol is ideal for high yields and is an attractive option if you are going to mass produce cannabinoids in a large scale commercial operation. It is (by most) considered the safest and most effective solvent for cannabis and hemp extraction. Because of its versatility and ease of use, ethanol is uniquely well positioned for use in almost all types of plant extracts. This is especially true for cannabis and hemp extracts, as it.
Solubilizes most non-polar and polar compounds.
Has an affinity for cannabinoids when extracted at low temperatures
Is a non-viscous liquid at atmospheric pressure, meaning it can be extracted quickly.
Boils at relatively low temperatures, allowing for efficient capture of ethanol and subsequent separation of the extracted compounds
Relatively safe, easy to handle and easy to produce.
Easy to store: Depending on your AHJ (authority) storage restrictions for ethanol are often more lenient, which allows your lab to keep more solvent in storage and extract larger amounts of cannabis and marijuana at a time.
No dewaxing or freeze protection is required if performed correctly in cold conditions.
Great for creating full spectrum hemp extracts and tin agents.
What products are ethanol extracts best suited to produce?
Ethanol extraction is ideal for the production of almost all cannabinoid derivatives. The first output of the initial stage of ethanol extraction is the crude AKA "crude oil", which is the main component of almost all cannabis and cannabis derivatives. Almost all other end products start as crude oil before being further refined and purified.
Ultimately, crude oil is transformed into vape ammunition oil, gel caps, edibles, tin doses, sublingual drops and topicals.
Ethanol is also an ideal solvent for large-scale production of isolates. Once the crude oil has been distilled to further narrow its potency, we may isolate compounds (like CBD or THC for example) by methods such as column or fast chromatography with very high purity levels (98%+).
A versatile solvent indeed!
Carbon Dioxide (CO2) Extraction
What is CO 2 extraction?
CO 2 (Carbon Dioxide) extraction uses pressurized carbon dioxide (CO 2) to extract CBD, THC and other cannabinoids from cannabis and hemp. At certain temperatures and pressures, CO 2 acts like a solvent. It is used to extract concentrates at high pressures and very low temperatures to separate, preserve and maintain the purity of the extracted oil. Compared to ethanol extraction, CO 2 extraction requires complex equipment and more training, but when performed correctly the end product will be very pure, potent and chlorophyll-free.
Is CO 2 extraction safe?
CO 2 extraction is considered a safe extraction method because the solvent is non-volatile. It is used in other industries for plant extraction with the purpose of decaffeinating coffee and producing essential oils from a variety of plants. The resulting derivative extract is pure because no solvent is left behind.CO 2 also protects friable cannabis and cannabis terpenes by cold separation. This is very adjustable - the operator can choose to customize the pressure and temperature to achieve the desired results. Most importantly, CO 2 is environmentally friendly.
What are supercritical, subcritical and mid-critical CO 2 extractions?
When discussing CO 2 extraction, you will often hear the terms supercritical, midcritical and subcritical used. However, supercritical technology is by far the most commonly used method for extracting CO 2 from cannabinoid derivatives because it is safe and provides a pure end product.
Supercritical extraction utilizes liquid CO 2 and raises the temperature and pressure to a temperature where the CO 2 reaches its supercritical point and has the properties of both a gas and a liquid. This state is ideal for cannabinoid extraction as it will dissolve THC and CBD like a liquid, but is easy to handle and fills the vessel completely like a gas.
Subcritical extraction means utilizing CO 2 at low temperatures and pressures. compared to supercritical extraction, subcritical extraction takes more time and yields less yield, but it retains the delicate terpenes and other desired compounds. This makes subcritical extraction ideal for producing a final product that retains the "full spectrum" of beneficial cannabis and/or cannabis compounds. Conversely, if you are looking to produce an isolate such as CBD, CBG, or THC you should not choose subcritical extraction as it requires many additional steps to isolate the desired molecules.
Mid-critical is the general range of temperatures and pressures between sub-critical and super-critical. You can use it in combination with supercritical and subcritical methods to produce full-spectrum CO 2 cannabis extracts, so it is not used as often as supercritical.
How does the CO 2 extraction process work?
The CO 2 extraction process begins by turning the CO 2 gas into a liquid. This is accomplished by lowering the temperature below -69°F (-56.11°C) while increasing the pressure above 75 pounds psi.
The next step involves using a heater to raise the temperature and pressure above the temperature at which the liquid becomes "supercritical" so that the CO 2 now has the properties of both a gas and a liquid. At this point, it can be introduced into the cannabis or hemp plant material for extraction.
The CO 2 passes through the plant material, dissolving the membrane of the trichomes and extracting terpenes and cannabinoids, such as CBD and THC.
After extraction, the resulting solution is passed through a separator and the desired compounds (cannabinoids, terpenes, etc.) are isolated and collected.
The CO 2 is then condensed and turned back into a liquid state ready to be used time and time again.
What equipment is needed for CO 2 extraction?
CO 2 extraction is performed by means of a "closed-loop extractor". Essentially, all CO 2 extraction equipment has three chambers.
The first chamber contains the pressurized liquid CO 2.
The second chamber contains the cannabis or cannabis biomass.
The third chamber separates the resulting extraction