Hash oil

Hash oil is an oleoresin obtained by the extraction of marijuana and/or hashish.

The tetrahydrocannabinol (THC) content of hash oil varies tremendously, since the manufacturers use a varying assortment of marijuana plants and preparation techniques. Dealers sometimes cut hash oils with other oils.

Hash oils seized in the 1970s had a THC contents ranging from 10 to 30%. The oil available on the U.S. West Coast in 1974 averaged about 15% THC. Samples seized across the United States by the Drug Enforcement Administration over an 18-year period (1980–1997) showed that THC content in hashish and hashish oil averaging 12.9% and 17.4%, respectively, did not show an increase over time. The highest THC concentrations measured were 52.9% in hashish and 47.0% in hash oil. Hash oils in use in the 2010s had THC concentrations as high as 90% and other products achieving higher concentrations

The following compounds were found in naphtha extracts of Bedrocan Dutch medical cannabis:

The form of the extract varies depending on the process used; it may be liquid, a clear amber solid (called “shatter"), a sticky semisolid substance (called "wax"), or a brittle, honeycombed solid (called "honeycomb wax").

Hash oil is consumed usually by smoking, ingestion, or vaporization. Smoking or vaporizing hash oil is known colloquially as "dabbing", from the English verb to daub (Dutch dabben, French dauber), "to smear with something adhesive". Dabbing devices include special kinds of water pipes ("oil rigs"), and vaporizers similar in design to electronic cigarettes. Oil rigs include a glass water pipe and a hollow tube (called a "nail"), with an indentation on the side which is sometimes covered with a dome. The pipe is often heated with a blowtorch rather than a cigarette lighter.

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