Differences between BHO and DHO

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There is a less risky alternative solvent butane gas. This new solvent is called DME, and it is ether. The cannabis extract made with this solvent is called DHO.

The BHO is a concentrate, obtained by removing the solvent cannabis using liquid butane gas pressurized. The BHO is one of the most potent concentrates cannabis exist today. But manipulate butane gas can get to be very dangerous, because it is a highly flammable and explosive fuel. In addition, it can become toxic. When using butane and cannabis must also be very careful so that the final result is free of impurities and toxic butane.

For all these risks, increasingly it is becoming more popular to use the DME. But what is DME? It is a less known than butane solvent and which is authorized for use in the food industry. In addition, it can be used as a propellant and fuel substitution. DME can be produced from any plant material in an ecological way in terms of CO2 emissions is concerned. Perhaps the name does not ring us, but we can use it daily as it is used as a propellant in many aerosol, such as in asthma inhalers. The DME is used in both the pharmaceutical industry and in the food, as it is not harmful to health, if the substance for the transformation of cannabis is used, the result is called DHO.

The DME is marketed as Dexso DME, one of the pure solvents used for extraction. Its extraction capacity is much higher than butane, so a higher yield is obtained. This product is less explosive than butane, evaporates quickly and leaves very little residue.

Oil extraction with pure dimethyl ether.

Oil extraction with pure dimethyl ether.

Terpenes are compounds that give fruits, flowers and herbs many of its aromas, flavors and other special properties.

Terpenes are compounds that give fruits, flowers and herbs many of its aromas, flavors and other special properties.

DHO extraction (which has been used cannabis and ether) has a higher concentration of cannabinoids and terpenes. And this product is much more soluble than butane, which makes a wider range of compounds end part of the extract. We must also add that the ether has a mild and easily identifiable smell, however, butane gas is odorless and flammable and therefore required by law to add sulfur to butane to have a recognizable odor and so can detect any leak gas. In addition to this additive for odor, butane may contain heavy metals and other impurities.

Use ether instead of butane is far more beneficial as it has been seen. Using ether for cannabis, the result is higher throughput during removal, for the DHO has a broader spectrum of cannabinoids, terpenes and other compounds of the plant matter. Butane (BHO), however, unless the DHO extracted and is more selective compounds extracted. Another issue to consider is that the ether is capable of dissolving plastics therefore not be used in plastic pullers or contact with these materials during the process in which cannabis is handled.

Tips before extraction

If you’ve decided to make your own oil extraction have to keep in mind that cannabis flowers must be freshly harvested, as well get a very rich oil terpenes and outstanding flavor.

The flowers of cannabis must be freshly harvested.

The flowers of cannabis must be freshly harvested.

Should be frozen flowers on the same day harvest and have them frozen at least for 24 hours. Note that the older the plant raw material, in our case the flowers, terpenes be achieved unless removed as terpenes are slowly evaporating during the drying process. Also, the older the flowers, the darker the oil.

The flower – filled extractor and ether must be in the freezer for more than 24 hours, so all the water freezes and is locked on the plant. The colder inside the extractor, the purer the oil.

Cannabis flowers frozen

Cannabis flowers frozen

If flowers are compressed within the extractor provides higher performance and efficiency of the solvent. To achieve the best quality flowers should only be slightly compressed and never have to be crushed.

Dimethyl ether evaporates quickly by low temperature evaporation (-24,8ºC). This accelerates the condensation of water in the liquid.

Is possible to use a more advanced system is the extraction and consisting evaporate the ether cast into hot distilled water. Distilled water temperature should be about 25°C; making DME evaporate almost instantly, leaving the oil floating on water. One advantage is that distilled water has the ability to extract impurities from the oil by osmotic pressure.

After extraction, the oil can be diluted with alcohol at least 96% pure; The extract is diluted in alcohol and remaining solvent evaporates easily.

We must also bear in mind that all legal regulations when handling these gases must be followed.

We must also bear in mind that all legal regulations when handling these gases must be followed.

Some of the substances that are extracted with the solvent, such as waxes, do not have medicinal or beneficial properties. These waxes pelleted at low temperatures when dissolved in alcohol. Eventually they form particles that can be removed with a filter. The extract and mixture of alcohol is introduced in the freezer for 24-48 hours to begin to agglomerate waxes and form white flakes floating in the solvent. The mixture is filtered with a coffee filter. After filtration of the purified alcohol mixture is evaporated. What remains is an oil that still contains small amounts of alcohol and water. But they can be easily removed by heat treatment. The vacuum pump allows the alcohol and most of the moisture to evaporate normal.

Keep in mind that the oil extraction process, although not made with butane, can be dangerous and should only be done on the outside, away from any source of heat, flame or sparks. We must also bear in mind that all legal regulations when handling these gases must be followed. And, of course, before you get to work, you have to be very knowledgeable about the technique that you use.

From Piensa En Verde we can help you putting your hands in a range of materials and products that work with the BHO, you will find everything you need at the following link.
By Noelia Jimenez, Team Piensa En Verde

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