Update to the China Catalogue of Hazardous Chemicals (2026 Edition)-Inclusion of 35 Nonane Isomers under Entry No. 1728

To further strengthen the safety supervision of hazardous chemicals and refine the scope of management for Entry No. 1728, "Nonane and its isomers", in the Catalogue of Hazardous Chemicals, the following 35 nonane isomers are hereby supplementally included under Entry No. 1728 of the China Catalogue of Hazardous Chemicals (2026 Edition) for regulatory implementation. Supplementary content: Straight-chain alkanes: 1 type Methyloctanes: 3 types Dimethylheptanes: 9 types Ethylheptanes: 2 types Trimethylhexanes: 8 types Methyl ethyl hexanes: 4 types Tetramethylpentanes: 4 types Dimethyl ethyl pentanes: 3 types Diethylpentanes: 1 type