At the United Nations Triple Conferences of the Parties to the Basel, Rotterdam, and Stockholm Conventions (BRS COPs) held from June 6 to 17, 2022, the parties agreed to ban perfluorohexane sulfonic acid (PFHxS).

PFHxS is a persistent organic pollutant (POP), a toxic chemical that poses risk to human health and the environment. All UN countries agreed to ban PFHxS globally and it has been added to Annex A of the Stockholm Convention on POPs.

PFHxS is an industrial chemical used in firefighting foams and in manufacturing stain coatings for carpets, paper, and cloth. It has over the years raised concern due to its persistence in the environment and in water. Under the Stockholm Convention, there are currently 30 POPs which deal with hundreds of chemicals and countries need to take action to stamp them out.