1. Entries 37, 38 and 39 in the original list are renumbered sequentially to Entries 38, 39 and 40 respectively. 2. A new dedicated Entry 37 is added to regulate perfluorohexane-1-sulfonic acid-related compounds. This entry covers a total of 117 controlled chemical substances corresponding to 121 CAS Registry Numbers.
117 Substances (121 CAS numbers) were added to the Japan CSCL-Class I Specified Chemical Substances
Update Date: Jun 29, 2026
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