Other
Alkanes, C1-4, C3-rich, if they contain > 0.1% w/w Butadiene
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A C1–C4 alkane mixture rich in C3 (propane/propylene) that carries butadiene contamination above the regulatory threshold, rendering it prohibited for any cosmetic application.
A C3-rich light alkane blend (C1–C4) sourced from refinery gas processing, carrying a conditional butadiene specification above 0.1% w/w. Butadiene at this concentration is classified CMR Cat 1A under EU Regulation 1223/2009 Annex II, making the use of this substance in cosmetics illegal throughout the EU regardless of the final concentration achieved in the product formulation.
Known concerns
- Contains 1,3-butadiene >0.1% w/w — EU Annex II CMR Cat 1A carcinogen, prohibited in cosmetics
- Highly volatile and flammable gas mixture presenting inhalation hazards
- IARC Group 1 human carcinogen — no safe exposure level defined
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related others
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.