On 7 February 2023, Helsinki time, the European Union published a proposal to phase out tens of thousands of so-called forever chemicals (PFAS), which are used to make semiconductors, batteries, aircraft and cars. Many chip suppliers warned that if Europe implements the ban it would cause major disruption to an already strained semiconductor supply chain.

The official in charge of the proposal at the German Environment Agency said the ban would be the broadest restriction proposal in history, but that it is a necessary step. Suppliers in the semiconductor sector say these chemicals are absolutely essential for semiconductor manufacturing and related industries.

Because PFAS resist high temperatures and corrosion they are widely used throughout industry and in consumer products, and in many cases no substitutes exist, which is why they are called forever chemicals.

If approved, the ban could take effect as early as 2026. Some sectors, such as medical device components, would be allowed a 12-year transition period, while other sectors would have to adapt within 18 months.