According to experts, the law is intended to limit the accessibility of butane to illegal hash manufacturers, as well as the limit the explosions of hash oil which have resulted in numerous deaths. Hash oil, also known as honey oil or cannabis oil, is an oleoresin obtained by the extraction of cannabis or hashish.It is a cannabis concentrate containing many of its resins and terpenes – in particular, tetrahydrocannabinol (THC), cannabidiol (CBD), and other cannabinoids.There are various extraction methods, most involving a solvent, such as butane or ethanol. With 19 illicit hash oil labs shut down so far in 2019, the DEA's Narcotic Task Force is on pace to find the most labs since 55 were discovered in San Diego County in 2014. It's now unlawful to promote massive portions of non-oxidized butane in California. A suburban home that was the site of a hash oil extraction laboratory explosion is seen in the Mira Mesa area of San Diego, California, U.S., May 5, 2019. It’s now illegal to advertise large parts of non-oxidized butane in California. In an try and maintain illicit hash oil producers from turning the state right into a scene straight out of the movie “Backdraft,” Gov. It’s now unlawful to promote massive portions of non-oxidized butane in California. In an try to maintain illicit hash oil producers from turning The Governor of California, Gavin Newsom, signed the bill earlier this year. In an try to protect illicit hash oil producers from turning the state proper right into a scene straight out of the film “Backdraft,” Gov.