JP — Expansion of Priority Assessment Chemical Substances under the CSCL
ENFORCEMENT TIMELINE
Reporting begins April 2025
Overview
Priority Assessment Chemical Substances under the Chemical Substances Control Law (CSCL) are substances manufactured or imported in large volumes that are judged to pose a relatively high risk to human health or the environment. This framework provides for ongoing safety evaluation and monitoring of existing chemical substances. In recent years, the scope of designated substances has expanded and evaluation methods have become more sophisticated; businesses are required to identify applicable substances, report manufacturing/import volumes, and submit hazard information as needed. Compliance checked against the latest official notifications is essential to ensure transparency and risk management across the supply chain.
Enforcement Timeline
Annual reporting — Manufacturing/import volumes for the previous fiscal year must be reported between April 1 and June 30 each year. Designation of Priority Assessment Chemical Substances — The target list is periodically updated and announced in the Official Gazette following evaluation by the Central Environment Council and the Chemical Substances Council. Hazard information reporting — Once a substance is designated, existing hazard information must be reported within a set period (typically one year). Detailed assessment stage — Where risk assessment findings warrant it, staged statutory measures such as use restrictions or manufacturing/import volume limits may be applied.
Business Impact
対象となる化学物質を扱う企業は、年次報告義務が増大するほか、リスク評価の結果次第で製造抑制や代替物質への変更を迫られる可能性があります。