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Alkanes, C2-3, if they contain > 0.1% w/w Butadiene

CAS 68475-58-1
3

Safety score · 0–100

Avoid

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

A light hydrocarbon gas fraction with potential 1,3-butadiene contamination, a known Category 1A carcinogen that is expressly prohibited in cosmetic products under EU law.

C2-3 alkanes (ethane and propane fractions) are petroleum refining intermediates also used as fuel gases. The conditional descriptor 'if they contain >0.1% w/w butadiene' indicates potential contamination with 1,3-butadiene, classified as a Category 1A carcinogen under CLP Regulation (EC) 1272/2008 and listed on EU Annex II to Regulation 1223/2009 as a prohibited carcinogenic impurity. No cosmetic use is established for this feedstock chemical.

Known concerns

  • 1,3-Butadiene >0.1% w/w — Category 1A carcinogen, EU Annex II prohibited
  • Volatile flammable hydrocarbon gas mixture
  • No SCCS safety assessment supporting cosmetic application

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.