Isoalkanes (C11-C14 Isoparaffinic Hydrocarbon Solvent)

Isoalkanes CAS 68551-19-9 is a refined isoparaffinic hydrocarbon solvent used in automotive polishes and dressings as a carrier for abrasive particles and surface actives. The solvent aids product spreading, helps the abrasive work into metal surfaces, and contributes to the product's ability to lift and suspend oxidation and tarnish.

At the ingredient level, isoparaffinic solvents in this CAS range can carry H304 (aspiration hazard) — a classification relevant to liquid hydrocarbons that may be aspirated into the lungs if swallowed. However, in polishing cream formulas where the solvent is dispersed in a high-viscosity aqueous matrix (viscosity ~2000 cSt), the CLP mixture rules frequently exempt the mixture from H304 classification even when the solvent ingredient carries it at the pure-substance level. Always confirm H304 from SDS §2 mixture-level classification, not from §3 ingredient-level data alone.

VOC contribution depends on concentration in the formula. At ≤30% in a polish cream with significant water content, the total product VOC typically falls in the 20–60 g/L range — often below the 51 g/L CARB bracket threshold that triggers a health deduction. The mild solvent vapor at ambient temperature is the primary inhalation consideration; good general ventilation is adequate for consumer hand-application use.

Environmental persistence is typical for petroleum-derived isoalkanes; biodegradation is slow but aquatic toxicity at consumer-use concentrations in leave-on automotive polish applications is not a primary concern.