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.
Self-polymerisation if inhibitor is depleted or temperature rises, releasing heat and vapour. The LG Polymers styrene vapour leak at Visakhapatnam on 7 May 2020 killed 12 people (indicative).
Main rules
Where
Rule
Effect
EU
REACH registration; Seveso III; EU single-use plastics directive restrictions on EPS food containers
Reduces some PS packaging demand (indicative)
US
IARC lists styrene as probably carcinogenic (Group 2A, 2018, indicative)
Labelling and exposure scrutiny
India
Rule
Effect
MSIHC Rules 1989; Plastic Waste Management (Amendment) Rules 2021 ban on many single-use plastics including PS cutlery (from 1 July 2022, indicative)
Tighter storage controls after the 2020 Vizag leak; lower demand for disposable PS
Trade measures
China's anti-dumping duties on styrene from the US, South Korea and Taiwan (from 2018, indicative; ICIS reported 50% combined duties on US styrene in 2019).
Supply risk
Gulf exports, over 20% of world trade, all pass Hormuz (S&P Global, 2026). India is fully import-dependent. Not on critical lists.