Hydrocarbons, C10–C12, isoalkanes, <2% aromatics

Hydrocarbons C10–C12, isoalkanes, <2% aromatics is a refined isoparaffinic petroleum fraction used as the primary carrier solvent in petroleum-based tire dressings and surface coatings. The low aromatic content (<2%) reduces carcinogenicity risk compared to aromatic-rich petroleum distillates, but the C10–C12 carbon chain length places it squarely in the H304 (aspiration hazard) classification family — ingesting and aspirating this material can cause chemical pneumonitis. At the ingredient level, the Aquatic Chronic 2 (H411) classification indicates chronic aquatic toxicity potential. The hydrophobic nature of this fraction means it partitions to sediment and organic matter in water bodies rather than dissolving readily, but the persistence and bioaccumulative tendency of the C10–C12 range makes environmental release a concern. At the leave-on concentrations used in tire dressings, the environmental pathway is primarily via tire wear particles and first-wash runoff. In finished tire gel formulas at 12.5–20%, this carrier provides the low-viscosity spreading needed for uniform applicator distribution, then the C10–C12 fraction partially flashes off as the polymer network cures on the tire surface.