THC is typically distilled at temperatures ranging from 130 to 180°C (266-356°F) during the short path distillation process.
Short path distillation is a method used to purify cannabis oil, specifically targeting the separation of cannabinoids like THC and CBD.
The process involves heating the oil in a jacketed vessel, often using a temperature control unit (TCU) that circulates oil to maintain precise temperatures.
The typical temperature range for this process is between 130 and 180°C.
At these temperatures, the THC and CBD vaporize and are then collected in a central condenser unit that is maintained at a cooler temperature (typically 60-70°C) to facilitate condensation of the cannabinoids.
The equipment used, known as wiped film short-path molecular stills, ensures that the feedstock oil is spread into a thin film on the evaporation chamber wall.
This thin film enhances the efficiency of the distillation by allowing more volatile components like terpenes to evaporate separately, while the less volatile cannabinoids are directed to the central condenser.
The controlled temperature in the condenser helps in selectively collecting THC and CBD, ensuring their purity and effectiveness.
This method is particularly effective for samples that do not degrade easily at high temperatures and for mixtures that can boil at lower temperatures, making it ideal for the delicate process of distilling THC from cannabis oil.
The precise temperature control and short exposure times (10-60 minutes) help in preventing degradation of the THC, thereby maintaining its psychoactive properties.
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