News Details
Japan adds 50 chemicals to carcinogenic list effective from 1 April 2027
On 6 June 2025, Japan’s Ministry of Health, Labour and Welfare (MHLW) published a list of 50 carcinogenic chemicals on the ASEAN-Japan Chemical Safety Database portal. The update was also released on the country’s National Institute of Technology and Evaluation - Chemical Risk Information Platform (NITE-CHRIP) portal.
Background
In Japan, carcinogenic substances are subject to strict obligations under the Industrial Safety and Health Act (ISHA), which requires records to be kept for up to 30-years.
Previous update in December 2022
Earlier, in December 2022, the MHLW classified 200 chemicals as carcinogenic and started enforcement in a phased manner starting from April 2023. More details can be found here.
Obligations for Stakeholders
From 1 April 2027, the following will be mandatory for stakeholders:
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Mandatory GHS-compliant labelling and provision of Safety Data Sheets (SDS).
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Risk assessment before use, implementation of exposure control measures, and health monitoring for workers.
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Employers must conduct regular medical examinations, particularly for substances classified as Group 1 or 2A carcinogens, maintain detailed exposure and health records, and notify authorities when required.
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Additional regulations, such as the Chemical Substances Control Law (CSCL) and PRTR Law, also apply to environmental reporting and emissions control.
We acknowledge that the above information has been compiled from NITE-CHRIP Portal-Japan .
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