When discharged, the hydrocarbons with fewer carbon and hydrogen atoms vaporise, leaving behind a heavier, less volatile component. Gasolines contain high levels of hazardous and volatile hydrocarbons such as benzene, which has been linked to human cancer, and hexane, which has been linked to nervous system damage.Gasoline and kerosene spills are very harmful due to their high flammability. In oil collection and semi-refined commodities like diesel and bunkering oils, cancer-causing polycyclic aromatic hydrocarbons and other dangerous substances may be present.

Crude oils are typically classified by their geographical origin in the petroleum chemical formula industry. Oils from all around the world have a variety of characteristics, ranging from a thin, volatile fluid to a semi-solid. Classification of waste oil collection Dubai types by geographical origins is usually not a useful classification technique for response workers because it provides little information about overall toxicity, wholeness, and changes that occur with time and weathering. These qualities are crucial in the aftermath of an oil spill.