On April 28, 2026, the Ministry of Climate, Energy and Environment released a regulatory notice updating the list of "Existing Chemical Substances." This amendment revises classifications under the Act on Registration and Evaluation of Chemical Substances and modifies specific data entries, including chemical names, CAS numbers, and unique identification numbers. The primary content of the document includes extensive tabulated listings of chemical substances, particularly focusing on polymers, reaction products, and complex mixtures, all marked with unique reference numbers and comprehensive chemical compositions. The notice also outlines amendments to regulatory provisions, such as revised implementation dates (extending deadlines from 2020 to 2026) and clarifications on substance naming or classification. Importantly, these amendments take effect immediately upon issuance. This document serves as a critical technical and administrative update to maintain the accuracy, standardization, and alignment of the national chemical inventory with current regulatory and scientific standards.
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