According to the Gazette on April 3, 2023, Japan added six substances to the List of Priority Assessment Chemical Substances (PACs) following the removal of six substances on March 31. This brings the total number of PACs to 218. The details of changes to the list are presented in the table below. Substance name Six substances added into list Sodium salt of 2,2\’,2\’\’,2\’\’\’-(ethane-1,2-diyldinitrilo)tetraacetic acid alpha,alpha\’-[(Alkyl(C=8-18, normal chain)azanediyl)bis(ethane-2,1-diyl(or methylethane-2,1-diyl))]bis{omega-hydroxypoly[oxyethane-1,2-diyl/oxy(methylethane-1,2-diyl)]} (The repeating number of repeating unit is an integer 1 or more.) (It is limited that the number-average molecular weight of the polymer is less than 1,000.) Salt of {ester of 2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethan-1-aminium and [saturated fatty acid(C=10-18, normal chain)(or unsaturated fatty acid(C=18, normal chain))]} or salt of {ester of 2-hydroxy-N-(2-hydroxypropyl)-N,N-dimethylpropan-1-aminium and [saturated fatty acid(C=10-18, normal chain)(or unsaturated fatty acid(C=18, normal chain))]} alpha-(Alkyl(C=6-18))-omega-hydroxypoly[oxyethane-1,2-diyl/oxy(methylethane-1,2-diyl)](It is limited that the number-average molecular weight of the polymer is less than 1,000.) alpha-Hydro-omega-[(3-methylbut-3-en-1-yl)oxy]poly(oxyethane-1,2-diyl) (The repeating number of repeating unit is an integer…