Advanced Refinement Techniques

The translucent amber oil produced by charcoal-filtering the ether phase of the extraction and isomerizing the cannabidiol present to THC contains, in most cases, between thirty and sixty per cent THC. Utilizing rather complex and exacting techniques of modern chemistry, it is possible to further refine this oil. Fractional distillation of the oil will yield a product which is up to twice as strong as the ether phase, and can be converted into nearly pure THC. Totally pure THC, a thin...

Step 2 Pulverizing the cannabis material

There are several reasons for reducing the material to the finest powder possible Ruptured cell walls allow the oil to be extracted more readily and the volume of the starting material is reduced, thus lessening the size of the extraction apparatus needed as well as the amount of solvent necessary. Marijuana is put into a heavy-duty blender filled one-third full. A slower speed allows the ground material to fall into the blades while constantly flowing up -the sides from the bottom. If...

Methods For Construction And Operation Of A Highvolume Extraction Apparatus

An apparatus may be constructed utilizing two 55-gaIlon oil drums and equipment purchased from a hardware or surplus store with which very large amounts of marijuana or hashish may be extracted and processed. The apparatus is appropriately designed to meet the unique problems inherent in high-volume extraction and contains the necessary safety features to prevent mishaps with flammable solvents. The apparatus may be used to perform all the operations', refluxing, soxhleting, distilling, and...

Step 3 Refluxing

The essential oil is extracted from the cannabis material by refluxing (boiling) in a solvent. This essential oil (containing THC and related substances, chlorophyll, and the substances contributing the taste and smell) dissolves in the solvent (usually an alcohol) while the cellulose parts of the herb do not dissolve. The leached marijuana is removed by straining and the solvent containing the oil is evaporated, leaving as residue the essential oil of the herb. As it is very dangerous to boil...

Building a safety box in which to convert highrotating THC to its acetate

Because this conversion utilizes a very dangerous chemical, acetic anhydride, it is necessary to construct a safety box in which to perform this operation. This places a shield between the chemist and the apparatus, and has the operation taking place in a separate atmosphere. The fumes from heated acetic anhydride are very flammable and poisonous. Inhalation of the fumes is one of the most unpleasant and dangerous experiences we have had, and that is why we feel it is necessary to present this...

Step 4 Soxhleting

After refluxing, it is necessary o remove the oil-bearing solvent that remains still in the expended cannabis material. This is done by draining the dark oil-solvent liquid from the cannabis material and washing the material repeatedly with clean solvent. Obtain a vegetable-draining colan- der to fit above the stainless steel pot mentioned before. The colander is fitted with a large coffee filter paper twelve-inch David Douglas brand papers are quite adequate and the cannabis-solvent-oil...