Petroleum Naphtha (Light Alkylate)

Petroleum naphtha (light alkylate fraction, CAS 64741-66-8) is a low-boiling petroleum distillate used as a primary carrier solvent in some professional-grade ceramic coating formulations. It replaces the isopropyl alcohol (IPA) carrier used in most consumer ceramics, giving the formulation a different flash window and a lower surface-tension coating behavior. During application, the naphtha carrier evaporates (the "flash" phase), leaving behind the condensed silica and alkoxysilane coating matrix. **Health:** The light alkylate naphtha fraction is the compound primarily responsible for the H304 (Aspiration Toxicity Cat 1) classification in DANGER-rated ceramic coatings like CarPro Cquartz UK 3.0. This classification applies to the ingestion/accidental swallowing pathway; normal topical application to a car panel does not create an aspiration hazard. The solvent evaporates quickly; adequate ventilation during application prevents vapor accumulation above narcotic thresholds. Gloves (FKM or NBR) are recommended for prolonged skin contact. **Environment:** Like most petroleum distillates, this fraction is not readily biodegradable and has aquatic toxicity potential from the aromatic components that may be present as trace impurities in the light alkylate cut. Products containing this carrier should not be applied in ways that allow run-off into storm drains or waterways.