Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%)
- Aromatic solvents
- CAS 64742-82-1
Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) (CAS 64742-82-1) appears in 1 of the 2,180 car-care products CarCareTruth tracks (as of September 2026). It is classified as a VOC.
Aspiration hazard (H304) and narcotic effects (H336) at the pure-substance level, with EUH066 for repeated-exposure skin drying. The defining feature versus a de-aromatized isoalkane fraction is the declared 2-25% aromatic content: that aromatic fraction is what carries trace ethylbenzene and cumene, both California Proposition 65 listed carcinogens, which is why formulations built on this fraction commonly disclose them separately in Section 3.
Hydrocarbons C9-C12 (n-alkanes, isoalkanes, cyclics, aromatics 2-25%) is a petroleum-derived solvent fraction in the naphtha and white-spirit range, identified by the REACH generic EC entry 919-446-0. It is the workhorse carrier in solvent-based paste waxes, where it holds the wax and polymer phase in solution long enough to be spread as an even film and then evaporates to leave the film behind.
The declared aromatic content is what separates it from the de-aromatized C10-C12 isoalkane fractions (EC 923-037-2 and similar) that manufacturers substitute when a formula has to meet tighter regional solvent standards. Aromatics improve solvency for hard waxes and resins, and they also bring the trace benzene-family constituents, ethylbenzene and cumene among them, that appear as separately itemized Section 3 entries below 1%.
H304 is classified for the substance because its kinematic viscosity sits below the CLP aspiration-hazard exemption threshold. In a finished paste wax the mixture viscosity is usually far above that threshold, which is why H304 frequently appears in Section 3 for this component and is absent from the Section 2 mixture classification.
Health & environment profile
- VOC
- yes
- Prop 65 listed
- no
- Asthmagen
- no
- EPA Safer Choice
- no
- Aquatic toxicity
- yes
- Biodegradable
- no
- Bioaccumulative
- no
- Persistent
- yes
- Ozone depleting
- no
- Microplastic
- no
- PFAS
- no
- Env. score
- 3/5
Common questions about Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%)
- What is Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) used for in car care?
- Carrier solvent for wax and polymer pastes; dissolves the wax phase so it can be spread thin, then flashes off as the film hazes
- Is Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) a VOC?
- Yes. Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) is classified as a volatile organic compound (VOC).
- Is Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) on California's Proposition 65 list?
- No. Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) is not on California's Proposition 65 list.
1 product contain this
Prop 65
Related
Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.