2-Methylbutyl Acetate
- Esters
- CAS 624-41-9
- IUPAC: 2-methylbutyl acetate
2-Methylbutyl Acetate (CAS 624-41-9) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026). It is classified as a VOC.
Flammable liquid at pure concentration. At the trace concentrations used in silicone spray sealants (0.03-0.05%), no GHS health classification propagates to the mixture. Mild irritant at high concentrations; not a sensitizer or asthmagen.
2-Methylbutyl acetate (CAS 624-41-9) is a branched-chain ester solvent with a mild fruity odor. It is closely related to pentyl acetate (CAS 628-63-7) — an isomeric ester with similar physical properties and applications.
In automotive spray sealants it appears at trace concentrations (0.03–0.05%), where it functions as a co-solvent. At these concentrations, no GHS hazard classifications from the pure substance propagate to the mixture, and its environmental contribution is negligible.
Health: At pure-substance concentrations it is a flammable liquid and mild irritant. At trace concentrations in consumer spray products it contributes no GHS hazard to the mixture classification.
Environment: Readily biodegradable ester. No bioaccumulation concern. VOC contributor at the pure substance level, but at 0.03–0.05% of a consumer product the contribution to atmospheric VOC loading is minimal.
Health & environment profile
- VOC
- yes
- Prop 65 listed
- no
- Asthmagen
- no
- EPA Safer Choice
- no
- Aquatic toxicity
- no
- Biodegradable
- yes
- Bioaccumulative
- no
- Persistent
- no
- Ozone depleting
- no
- Microplastic
- no
- PFAS
- no
- Env. score
- 5/5
Common questions about 2-Methylbutyl Acetate
- What is 2-Methylbutyl Acetate used for in car care?
- Minor solvent; used at trace concentrations in silicone-based formulations
- Is 2-Methylbutyl Acetate a VOC?
- Yes. 2-Methylbutyl Acetate is classified as a volatile organic compound (VOC).
- Is 2-Methylbutyl Acetate on California's Proposition 65 list?
- No. 2-Methylbutyl Acetate is not on California's Proposition 65 list.
- Is 2-Methylbutyl Acetate biodegradable?
- Yes. 2-Methylbutyl Acetate has a confirmed biodegradable profile.
1 product contain this
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.