• Jingmeng Tian

Basic Decarboxylation Principle


How to get the best crude for your wiped film distillation system 101:

Second Chapter: Basic Decarboxylation Principle


During production of CBD/THC distillate, labs run into problem of terpenes. Most client do not want hemp/cannabis small or favor in their final product. Thus processor are required by client to remove terpenes in their product.

The processing of terpenes removal is call decarboxylation. Here is a guidelines for conducting the heat dependent decarboxylation and de-volatilization of the extracted oleoresin from processing Cannabis and Help botanicals. Decarboxylation modifies the molecular structure of the constituents of the oil by removing the Carboxylic acid attached to Cannabinoid acids, modifying metabolic action. De-valorization refers to the process of removing both the fragrant and relatively low boiling (93o-130o Celsius) compounds from the crude oil for the purposes of terpene/ essential oil capture and preparation for further processing and refinement.

Here is a step by step procedure for decarboxylation:

1: Select container with a maximum capacity of at least twice the volume of crude oil used, add magnetic Stir Bar, record tare weight of your container.

2. A stainless-steel vessel recommended due to its durability and higher heat transfer coefficient, however a glass beaker will also work well.

3. Fill up to one-half of the total volume of the container with extracted crude oil. Record crude oil weight with container and tare weight subtracted.

4. Using a Controllable Heat Source (Hot Plate, Induction Cooktop), select your appropriate temperature based on time allotted.

5. Decarboxylation Times and Temperatures (Approx., While data supports these times, original composition of Oil can change time required. Continue Operation until production of small semi-stable co2 bubbles ceases).

• 60 Minutes at 130 c

• 180 Minutes @ 110C

6. Temperatures and times for decarboxylation are reliant upon a thin film of reactant, thick solutions allow for such less efficient heat distribution and gas exchange, so thicker solutions will need more time to decarboxylate fully.

7. Set Stir function (Magnetic or Overhead Stirrer) at 240-1500 RPM to allow proper gas exchange. Lack of stirred agitation will result in boil over.

8. If a layer of tiny bubbles grows on top of the decarboxylation, use a stainless steel or glass stir rod to break up the layer.

Allow decarboxylation to continue until production of small semi-stable co2 bubbles ceases.

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