Vinyl chloride monomer: Regulation
A known carcinogen and the East Palestine derailment
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 |
|---|---|---|
| Flam. Gas 1; Press. Gas; Carc. 1A | UN1086 | Known human carcinogen (liver angiosarcoma); extremely flammable. The 2023 East Palestine, Ohio, derailment led to a controlled burn of VCM rail cars. |
Main rules
| Where | Rule | Effect |
|---|---|---|
| EU | REACH; Carcinogens and Mutagens Directive occupational limit for VCM; EU anti-dumping duties on US PVC (58.0%) | strict workplace limits; protection for EU PVC |
| US | OSHA VCM standard (1 ppm); EPA NESHAP for PVC production; HON update (2024) | higher compliance capex (Westlake: $103 million in 2026) |
| Global | Minamata Convention Annex B: cut mercury use per unit of VCM from carbide by 50% by 2020 versus 2010; move to mercury-free catalysts | pressure on Chinese carbide route |
India
| Rule | Effect |
|---|---|
| DGTR: anti-dumping duty on PVC paste resin (March 2025); suspension PVC ADD recommended Aug 2025 ($22-284/t) but not imposed by the Ministry of Finance (Nov 2025) | import prices remain tied to China and US offers |
| DGTR countervailing-duty probe on Chinese suspension PVC, initiated 27 Feb 2026; DGFT restriction on S-PVC imports at or below $0.766/kg CIF for six months from 24 Jul 2026 | possible retrospective duties; a price floor on low-priced S-PVC imports |
| BIS Quality Control Order for PVC homopolymers (withdrawn 12 Nov 2025) | foreign suppliers no longer need BIS licences (BIS notification via ELP, Nov 2025) |
| MSIHC Rules 1989; Factories Act limits for VCM | storage and workplace rules |
Trade measures
- EU 58.0%, UK 56.01% and Brazil 43.7% anti-dumping duties on US PVC (Dec 2025)
- India CVD probe on Chinese PVC (Feb 2026) and DGFT import restriction on S-PVC at or below $0.766/kg CIF (from 24 Jul 2026)
- China's revocation of VAT export benefits on PVC (April 2026)
Supply risk
China and the US Gulf dominate exportable supply; Gulf hurricanes and Chinese policy (export rebates, mercury rules) are the main risks for importers such as India.