The chemical composition of gutter oil includes alkanes, cycloalkanes, alkenes, aromatic hydrocarbons, aflatoxin B1, benzopyrene and trans fatty acids, etc. The chemical composition of paraffin oil is hydrocarbons, which are normal Docosane and n-octadecane contain 85% carbon and 14% hydrogen. Gutter oil is a complex mixture that causes cell aging. In severe cases, it can paralyze the central nervous system, cause disability, and induce leukemia. Paraffin oil is used to make candles.