Japan Publishes Draft List of PFHxS‑Related Substances to Be Designated as Class I Chemicals under CSCL

On January 21, 2026, Japan released a draft ministerial ordinance specifying the individual “perfluorohexane sulfonic acid (PFHxS)‑related substances” that will be designated as Class I Specified Chemical Substances under the Chemical Substances Control Law (CSCL). Public comments were accepted until February 19, 2026. Under the amended Cabinet Order to the CSCL Enforcement Order, promulgated in December 2025, PFHxS‑related substances—identified under the Stockholm Convention