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Gases (petroleum), alkylation feed, if they contain > 0.1% w/w Butadiene

CAS 68606-27-9
2

Safety score · 0–100

Avoid

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

An alkylation feed gas stream from petroleum refining containing more than 0.1% w/w 1,3-butadiene — alkylation feeds are particularly rich in reactive C4 olefins and butadiene, and are prohibited in EU cosmetics.

This alkylation feed gas stream contains 1,3-butadiene above the 0.1% w/w threshold, triggering prohibition under EU Cosmetics Regulation 1223/2009 Annex II. Under CLP Regulation (EC) 1272/2008, 1,3-butadiene is classified as carcinogenic Category 1A and mutagenic Category 1B. REACH Annex XVII entry 28 sets a 0.1% threshold for 1,3-butadiene in substances placed on the market, and the EU Cosmetics Regulation 1223/2009 reinforces this prohibition for cosmetic products. Alkylation feed streams contain reactive olefins that contribute to butadiene formation potential.

Known concerns

  • Contains 1,3-butadiene >0.1% w/w — EU Annex II prohibited substance
  • CMR Category 1A carcinogen, Category 1B mutagen under CLP
  • Extremely flammable gas
  • Contains reactive C4 olefins
  • No safe threshold for carcinogenicity in cosmetics

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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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.