Hydrocarbon Volatiles

Hydrocarbon volatiles are a broad class of organic compounds composed primarily of hydrogen and carbon atoms that evaporate readily at room temperature. In cannabis, these volatiles include monoterpenes (like limonene and myrcene), sesquiterpenes (like caryophyllene), and other C5–C15 hydrocarbons that contribute to the plant's aroma profile. These compounds are often the most abundant constituents of cannabis essential oils and are frequently detected across most cultivars. Hydrocarbon volatiles are distinct from oxygenated terpenes and other secondary metabolites, and their relative concentrations vary significantly based on genetics, cultivation conditions, and harvest timing. Understanding hydrocarbon volatile composition is central to cannabis chemovar classification and breeding work.

Breeders working with hydrocarbon volatile profiles often select for specific monoterpene and sesquiterpene ratios to stabilize aroma expression across generations. Hydrocarbon volatile stability is used as a marker trait in lineage work, as these compounds are relatively consistent indicators of genetic heritage and environmental response.