6 substances were added to the Japan CSCL-Class I Specified Chemical Substances-Apr 17, 2026

Recently, Japan issued an updated announcement, classifying the following 6 substances as Category I Specified Chemical Substances, with a total of 39 groups of substances now listed.

The details of the new substances are as follows:

Cabinet Order Number	CAS RN	Chemical name	MITI No.
34	1017281-31-0	Octanoic-5,6,7,8-13C4 acid, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoro-	2-2659
34	1052668-28-6	Octanoic-5-13C acid, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoro-	2-2659
34	1159014-62-6	Octanoic-13C4 acid, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoro-	2-2659
34	864071-08-9	Octanoic-1,2-13C2 acid, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoro-	2-2659
34	864071-09-0	Octanoic-1-13C acid, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoro-	2-2659
32	51990-12-6	Paraffin waxes and Hydrocarbon waxes, chloro	2-68

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