On April 24, 2026, the Chemical Accident Prevention Division of South Korea's MoEL released the latest revision of the Korean GHS regulation.

In July 2026, South Korea's NICS issued an advance notice on a partial revision to the Hazard Review Results of Chemical Substances.

South Korea's MoEL has published Q2 2026 assessment results for 74 new chemical substances.

South Korea amended to the Enforcement Decree of the Act on Registration and Evaluation of Chemical Substances.

MCEE issued Notice No. 2026-103 revising the Existing Chemical Substances List.

From July 1, 2026, newly prepared MSDS or changes to existing MSDS must use the revised format.

On March 27, 2026, South Korea's National Institute of Chemical Safety (NICS) issued Notice No. 2026-5, revising the Designation of Acute Human Hazardous Substances, Chronic Human Hazardous Substances, and Ecological Hazardous Substances under the Act on Registration and Evaluation of Chemicals (K-REACH) and its Enforcement Decree. The previous revision was completed on 7 August 2025.

On March 26, 2026, the Ministry of Climate and Energy Environment (MCEE) of Korea announced Notice No. 2026-296, partially amending the Existing Chemical Substances. This revision primarily targets substances listed under the Existing Chemical Substances inventory that were notified under generic names due to recognized data protection, where the data protection period has expired. These substances need to be restored to their original chemical names as part of necessary housekeeping.

On March 10, 2026, Korea's National Institute of Chemical Safety (NICS) issued Announcement No. 2026-2, announcing the approval of the revised draft of the Designation of Accident-Preparedness Substances, officially adding three substances to the list. This revision aims to strengthen the regulation of high-risk chemicals and prevent chemical accidents.

NICS of South Korea issued revisions to the Hazard Review Results of Chemical Substances, which took effect immediately.