On August 8, 2023, EU issued Regulation (EU) 2023/1068 to list perfluorohexane sulfonic acid (PFHxS), its salts, and PFHxS-related compounds in Annex I of Regulation (EU) 2019/1021, also known as the Persistent Organic Pollutants (POPs) Regulation. The regulation will come into effect 20 days after its publication.
According to the POPs Regulation, the manufacturing, placing on the market, and use of substances listed in Annex I, whether they are in their pure form, mixtures, or part of articles, will be prohibited.
To ensure compliance with the regulation, a specific limit value has been established for PFHxS, its salts, and PFHxS-related compounds when they occur as unintentional trace contaminants in substances, mixtures, and articles. The restricted conditions for PFHxS, its salts, and PFHxS-related compounds are outlined as follows:
|Substance||CAS No||EC No||Limit value|
Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds
355-46-4 and others
206-587-1 and others