Rubber chemicals: Regulation
Why a tyre antiozonant is under fire in California
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 |
|---|---|---|
| 6PPD: skin sensitiser, reproductive toxicity cat 2 (EU), aquatic acute and chronic 1; MBT: skin sensitiser; TMTD: toxic, sensitiser | UN3077 where environmentally hazardous | Skin sensitisation for workers; 6PPD-quinone from tyre wear kills coho salmon; nitrosamine formation from some accelerators. |
Main rules
| Where | Rule | Effect |
|---|---|---|
| US (California) | DTSC Safer Consumer Products: motor vehicle tyres containing 6PPD listed as a Priority Product (2023) | tyre makers must analyse alternatives |
| EU | REACH; Euro 7 tyre abrasion limits | pressure on tyre wear particles and their chemicals |
| Germany/EU | Workplace limits on N-nitrosamines (TRGS 552) | shift from MBS and TMTD to TBBS and safe amines |
India
| Rule | Effect |
|---|---|
| Anti-dumping duty on sulphenamide accelerators from China, US and EU, five years (2026) | supports NOCIL pricing |
| Earlier ADD withdrawn July 2019; NOCIL petition covering products over 40% of FY2025 revenue | trade defence history |
Trade measures
- Indian ADD on sulphenamides (2026)
- Further Indian cases pending on about 40% of NOCIL's portfolio (PL Capital, May 2026)
Supply risk
Heavy dependence on China; a 6PPD ban without a drop-in substitute would disrupt tyre supply chains.