C8C16

C8C16 is a designation used in the petrochemical and refining industries to describe a hydrocarbon fraction whose constituent molecules contain between eight and sixteen carbon atoms (C8–C16). The label refers to a range of compounds rather than a single chemical, and the exact makeup varies with the source and processing method. Typically the fraction includes straight-chain and branched alkanes (paraffins), some cycloalkanes, and minor amounts of aromatics within the specified carbon range.

Source and production

C8C16 fractions are produced from crude oil or via synthetic hydrocarbon processes. They are obtained through distillation and subsequent processing steps such as catalytic reforming, hydrocracking, or hydrotreatment to achieve the desired boiling range and purity. The composition is often managed to meet performance needs for solvents, fuels, or process aids.

Properties

As a broad class of hydrocarbons, C8C16 fractions are generally nonpolar with relatively low volatility compared with lighter fractions, and they exhibit a wide boiling range roughly from about 100°C to 280°C. Densities and individual properties vary with the exact mix of isomers and aromatics. They are typically flammable and considered volatile organic compounds (VOCs) in many regulatory contexts.

Applications

Common uses include solvents for coatings, inks, adhesives, and cleaning products; components or blending stock in fuels and lubricants; and intermediate feedstocks for chemical manufacturing or further processing in refineries.

Safety and regulation

Handling requires standard safety practices for flammable liquids, including proper storage, ventilation, and personal protective equipment. Regulatory classifications and exposure limits vary by jurisdiction and product specification.

See also

Alkanes, Cycloalkanes, Aromatics, Naphtha, Light distillates.