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Alkanes, C3-4, if they contain > 0.1% w/w Butadiene

CAS 68475-59-2
3

Safety score · 0–100

Avoid

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

A C3-4 alkane fraction from petroleum refining with potential 1,3-butadiene contamination; the conditional butadiene descriptor places it on the EU Annex II prohibited list for cosmetics.

Propane-butane alkane fractions from petroleum streams are fuel gases but also potential carriers of 1,3-butadiene as a trace process contaminant. Under EU Regulation 1223/2009 Annex II and CLP Regulation (EC) 1272/2008, 1,3-butadiene is classified Category 1A carcinogenic, making any stream — including this C3-4 alkane cut — prohibited at >0.1% w/w butadiene content in cosmetic products.

Known concerns

  • 1,3-Butadiene >0.1% w/w — EU Annex II prohibited carcinogen
  • LPG-range alkanes with no cosmetic function established
  • Inhalation toxicity risk from volatile hydrocarbons

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.