News Details
Japan publishes consultation schedule for toxicity assessments of new chemical substances
On 27 October 2025, Japan’s Ministry of Health, Labour and Welfare (MHLW), Ministry of Economy, Trade and Industry (METI), and Ministry of Environment (MOE), acting as a joint council, published the consultation schedule for toxicity assessments of new chemical substances. The schedule was released on the National Institute of Technology and Evaluation (NITE) portal. New chemical substances are those not yet listed in the Existing and New Chemical Substances inventory (ENCS).
Purpose
The consultation schedule is intended to assist companies plan requests for expert consultation to verify the scientific validity of their non-standard methods (such as analogue methods and QSAR) used to assess degradability, accumulation, and toxicity before notifying a new chemical substance under the Chemical Substances Control Law (CSCL).
Schedule
| Assessment Month | Registration Deadline |
| January 2026 | November 19, 2025 (Wednesday) 3:00 p.m. |
| March 2026 | January 30, 2026 (Friday) 3:00 p.m. |
| April 2026 | March 3, 2026 (Tuesday) 3:00 p.m. |
| May 2026 | March 30, 2026 (Monday) 3:00 p.m. |
| June 2026 | May 14, 2026 (Thursday) 3:00 p.m. |
| July 2026 | June 9, 2026 (Tuesday) 3:00 p.m. |
| September 2026 | July 24, 2026 (Friday) 3:00 p.m. |
| October 2026 | August 27, 2026 (Thursday) 3:00 p.m. |
| November 2026 | September 16, 2026 (Wednesday) 3:00 p.m. |
| December 2026 | October 28, 2026 (Wednesday) 3:00 p.m. |
Obligations for the Stakeholders
Under the CSCL, manufacturers and importers must notify new chemical substances which are not yet listed on the ENCS to the MHLW, METI and MoE. Companies must apply for consultation using the analogy table template and consultation summary form available on the website of the National Institute of Technology and Evaluation (NITE) before the deadline, so that their assessment can be validated before the notification process.
We acknowledge that the above information has been compiled from National Institute of Technology and Evaluation (NITE) portal - Japan.
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