Molecular distillation is often referred to as high vacuum short-path distillation.
This is primarily because it operates under a high vacuum environment and utilizes a very short path for the vapor to travel from the evaporation surface to the condenser.
This method is particularly effective for separating thermally sensitive materials without causing degradation due to heat.
4 Key Reasons Why Molecular Distillation is Called High Vacuum Short-Path Distillation
1. High Vacuum Environment
The high vacuum environment in molecular distillation significantly lowers the boiling points of the substances being processed.
This is crucial for thermally sensitive materials, as it reduces the thermal stress they experience during the distillation process.
By lowering the boiling point, the process can be conducted at lower temperatures, preventing the breakdown or cracking of sensitive compounds.
The vacuum level in molecular distillation is typically less than 20 microns, which allows for a state known as molecular flow, where vaporized molecules can travel in any direction without colliding with other molecules.
2. Short Path
The term "short path" in molecular distillation refers to the minimal distance that the vaporized molecules travel from the evaporation surface to the condenser.
This short distance ensures that the molecules do not have time to undergo unwanted reactions or lose their integrity due to prolonged exposure to heat.
The condenser is placed very close to the evaporation surface, allowing for an immediate transition from the vapor state to the condensed state.
This configuration minimizes losses due to surface hold-up of the vapor and enhances the efficiency of the distillation process.
3. Application and Efficiency
The combination of high vacuum and short path in molecular distillation makes it an ideal method for purifying substances with low volatility and high molecular weight, such as certain cannabinoids and other temperature-sensitive compounds.
The close proximity of the condensing surface to the evaporation surface ensures that the equipment operates effectively, even with compounds that have high boiling points or are sensitive to heat.
4. Enhanced Efficiency for Heat-Sensitive Compounds
In summary, molecular distillation is called high vacuum short-path distillation because it leverages a high vacuum environment to reduce thermal stress on sensitive materials and employs a short path for vapor travel to enhance the efficiency and effectiveness of the distillation process for heat-sensitive compounds.
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