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CarCareTruth

Myrcene

  • Terpene solvents
  • CAS 123-35-3
  • IUPAC: (6E)-7-methyl-3-methylideneocta-1,6-diene

Myrcene (CAS 123-35-3) appears in 5 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is listed on California's Proposition 65 and classified as a VOC.

Beta-myrcene (CAS 123-35-3) is a naturally occurring monoterpene. The US National Toxicology Program reported that it caused cancer in laboratory rodents at high oral doses, and California's Prop 65 has listed beta-myrcene as a carcinogen on that basis since March 2015. In car-care products it appears only at trace fragrance-blend concentrations (<0.001%), far below the levels in those studies; it is not classified as an asthmagen.

β-Myrcene is a naturally occurring monoterpene hydrocarbon found in essential oils of hops, thyme, mango, and lemon grass. In car care products it appears at trace concentrations (< 0.001%) as part of fragrance blends — at those levels it contributes no meaningful hazard classification to the finished product. Confirmed biodegradable; Prop 65 listed (cancer, since March 2015 per CA OEHHA); not classified as an asthmagen.

Health & environment profile

VOC
yes
Prop 65 listed
yes
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
Purpose: Natural fragrance component; present at trace concentrations (<0.001%) as an incidental carry-over from fragrance blends

Common questions about Myrcene

What is Myrcene used for in car care?
Natural fragrance component; present at trace concentrations (<0.001%) as an incidental carry-over from fragrance blends
Is Myrcene a VOC?
Yes. Myrcene is classified as a volatile organic compound (VOC).
Is Myrcene on California's Proposition 65 list?
Yes. Myrcene appears on California's Proposition 65 list.
Is Myrcene biodegradable?
Yes. Myrcene has a confirmed biodegradable profile.

5 products 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.