Heavy hydrocarbons consist of materials with a density above 0.81 g/cm3 and are mostly used in vessel fuels, tank washing, industrial applications, and household applications. The flash point of these compounds is at least 40 degrees and has long-chain hydrocarbons, especially alkanes, cycloalkanes, and aromatics categorized as heavy industrial compounds. The chain length of heavy hydrocarbons varies in different applications. Generally, their hydrocarbon range is from C12 upwards. They are considered the cheapest fuel for bath ovens, bakery ovens, diesel engines, and some power plants.
Heavy hydrocarbon cuts are produced based on viscosity regulation in grades 180, 280, and 380. The viscosity of heavy hydrocarbons, which consist of cuts heavier than gas oil, are Regulated by using cuts and petroleum compounds based on their usage.