What this tab covers How it is regulated and what could disrupt supply: hazard classification, rules in the EU, US and India, anti-dumping duties and other trade measures, and supply-risk notes.
Known human carcinogen (IARC Group 1) and can form explosive peroxides or polymerise if not inhibited.
Main rules
Where
Rule
Effect
EU
REACH (CMR substance); Carcinogens and Mutagens Directive occupational limit
Strict exposure limits in plants.
US
OSHA 1,3-butadiene standard (1 ppm PEL); EPA TSCA risk evaluation
Exposure controls and fenceline monitoring.
China
Hazardous chemicals catalogue
Licensing and transport controls.
India
Rule
Effect
MSIHC Rules 1989
Butadiene listed as hazardous; safety reports for large storage.
PESO SMPV(U) Rules 2016
Licensing of pressurised storage and tankers.
Trade measures
China extra 10% tariff on US-origin products (2025)
No anti-dumping measures found on butadiene
Supply risk
Supply depends on naphtha cracker operations; European and Japanese closures and the shift to ethane reduce supply outside China. Not on critical lists.