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Gases (petroleum), C4-rich, if they contain > 0.1% w/w Butadiene

CAS 68477-85-0
2

Safety score · 0–100

Avoid

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

About

A C4-rich petroleum gas stream containing more than 0.1% w/w 1,3-butadiene — butadiene is classified as a Category 1A carcinogen under EU CLP regulation and is prohibited in all cosmetic products in the EU.

This C4-rich gas stream from petroleum refining contains 1,3-butadiene above the 0.1% w/w threshold, which triggers prohibition under EU Cosmetics Regulation 1223/2009 Annex II. Under CLP Regulation (EC) 1272/2008, 1,3-butadiene is classified as carcinogenic Category 1A, germ cell mutagenic Category 1B, and extremely flammable (H220). REACH restrictions on 1,3-butadiene (ECHA Annex XVII entry 28) also apply, restricting occupational and consumer exposure. There is no permitted use of 1,3-butadiene-containing streams in cosmetic products in the EU.

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 (H220)
  • Potentially explosive
  • No safe threshold established for carcinogenicity

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 — always read the physical product label and consult a healthcare professional for personal concerns.