Asphalt (Bitumen)
- Polymers
- CAS 8052-42-4
- IUPAC: Bitumen (petroleum)
Asphalt (Bitumen) (CAS 8052-42-4) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).
IARC Group 2B (possibly carcinogenic to humans) for oxidized bitumens and their emissions during application at elevated temperatures. At room-temperature aerosol application, exposure to volatilized asphalt constituents is lower than at hot-applied temperatures. The primary health concern is the co-solvent fraction (toluene, naphtha) rather than the asphalt binder itself at room temperature application.
Asphalt (bitumen, CAS 8052-42-4) is the steam-refined base form of petroleum-derived bitumen, used as the primary corrosion-barrier binder in rubberized undercoatings. It provides waterproofing, adhesion to bare metal, and the flexible film that resists cracking during vehicle thermal cycling. Distinct from oxidized (air-blown) asphalt which is also present in this formula for different rheological properties.
Health & environment profile
- VOC
- no
- Prop 65 listed
- no
- Asthmagen
- no
- EPA Safer Choice
- no
- Aquatic toxicity
- no
- Biodegradable
- no
- Bioaccumulative
- no
- Persistent
- yes
- Ozone depleting
- no
- Microplastic
- no
- PFAS
- no
- Env. score
- 4/5
Common questions about Asphalt (Bitumen)
- What is Asphalt (Bitumen) used for in car care?
- Primary film-forming binder in rubberized undercoatings; provides waterproofing, corrosion barrier, and adhesion to metal substrates
- Is Asphalt (Bitumen) a VOC?
- No. Asphalt (Bitumen) is not classified as a volatile organic compound (VOC).
- Is Asphalt (Bitumen) on California's Proposition 65 list?
- No. Asphalt (Bitumen) 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.