On the 9th February 2023, the European Commission (EC) announced that it was opening the consultation period on its proposal to regulate perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds under Part A of Annex I of Regulation (EU) 2019/1021 on Persistent Organic Pollutants.
The substances, scope and possible exemptions from the ban are listed below:
| SUBSTANCE | SCOPE | EXEMPTION |
| PFHxS and its salts | Substances, mixtures or articles | †0.025 mg/kg |
| PFHxS-related compounds | †1 mg/kg (sum of all PFHxS-related compounds) | |
| PFHxS and PFHxS-related compounds |
Firefighting foam mixtures |
†0.1 mg/kg (to be reviewed within three years of the entry into force of this amending Regulation with a view to reducing the limit) |