On November 1, 2023, Thailand’s Department of Industrial Works (DIW) opened a public consultation on the draft amendments to the List of Hazardous Substances under the Hazardous Substances Act B.E. 2535 (1992). As per the notification, the DIW proposed to add “perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds” to Annex 5.1 of the List as Type 3 hazardous substances, covering 147 substances. Comments are welcome before November 15, 2023.