C10C12

C10C12, often written as C10-C12, is a shorthand label used in chemistry and petrochemical industries to denote hydrocarbons with ten to twelve carbon atoms in their molecules. It does not refer to a single compound; rather, it encompasses a class of compounds whose carbon number lies between 10 and 12. The most prominent members are the straight-chain alkanes decane (C10H22), undecane (C11H24), and dodecane (C12H26), along with branched isomers that share the same general formula.

Chemically, these are saturated hydrocarbons (alkanes) with relatively high boiling points. Decane boils around 174°C, undecane near 210°C, and dodecane around 216°C, with branched isomers displaying similar ranges. They are nonpolar and have low water solubility. At room temperature, decane, undecane, and dodecane are liquids. They are flammable and commonly occur as components of the heavier fractions of crude oil, including portions of gasoline, kerosene, and diesel blends, depending on refining.

Uses and research: In refining, C10-C12 fractions are used as solvent components and as part of feedstocks for fuels and lubricants. In combustion chemistry, decane and dodecane serve as surrogate fuels in experiments and models to simulate high-carbon-number hydrocarbon oxidation and soot formation. They are also used as reference standards in distillation, viscosity, and other measurements of hydrocarbon mixtures.

Safety and environmental notes: Like other alkanes, C10-C12 hydrocarbons are flammable and may pose health risks if inhaled in high concentrations. They are volatile organic compounds and can contribute to air pollution; proper handling, storage, and disposal are required.