# Butadiene: Regulation

A carcinogen that must be kept from polymerising

Source page: https://www.materialinsights.org/chemicals/butadiene/regulation/

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.

#### Hazards

| Classification | UN number | Key risks |
|---|---|---|
| Flammable gas cat 1; carcinogenic cat 1A; germ cell mutagen cat 1B | UN1010 | 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.

## Other sections

- [Summary](https://www.materialinsights.org/chemicals/butadiene/index.md)
- [Overview](https://www.materialinsights.org/chemicals/butadiene/overview/index.md)
- [Correlation](https://www.materialinsights.org/chemicals/butadiene/correlation/index.md)
- [Production route](https://www.materialinsights.org/chemicals/butadiene/routes/index.md)
- [Production](https://www.materialinsights.org/chemicals/butadiene/production/index.md)
- [Feedstocks](https://www.materialinsights.org/chemicals/butadiene/feedstocks/index.md)
- [Cycles](https://www.materialinsights.org/chemicals/butadiene/cycles/index.md)
- [Trading](https://www.materialinsights.org/chemicals/butadiene/trading/index.md)
- [Movement](https://www.materialinsights.org/chemicals/butadiene/movement/index.md)
- [Characteristics](https://www.materialinsights.org/chemicals/butadiene/characteristics/index.md)
- [Emissions](https://www.materialinsights.org/chemicals/butadiene/emissions/index.md)
- [Relationships](https://www.materialinsights.org/chemicals/butadiene/links/index.md)