; trimethoxy(octyl)silane (CAS No. 92797–60–9) (provided for in subheading 3824.99.92) Free No change No change On or before 12/31/2025 . 11535. 1,1,1-Trimethyl-N-(trimethylsilyl)silanamine hydrolysis products Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.66 1,1,1-Trimethyl-N-(trimethylsilyl)silanamine hydrolysis products with silica and 3-(triethoxysilyl)-1-propanamine (CAS No. 199876–44–3) (provided for in subheading 3824.99.92) Free No change No change On or before 12/31/2025 . 11536. Waterborne epoxy curing agents Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.67 Waterborne epoxy curing agents based on cycloaliphatic amine technology containing (3-aminimethyl-3,5,5-trimethylcyclohexylamine) (CAS No. 285513–2) (provided for in subheading 3824.99.92) Free No change No change On or before 12/31/2025 . 11537. Preparations based on 1-phenylicosane-1,3-dione Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.68 Preparations based on 1-phenylicosane-1,3-dione (CAS No. 58446–52–9) (provided for in subheading 3824.99.92) Free No change No change On or before 12/31/2025 . 11538. Mixtures of 2-Mercaptopropionic acid, methyl ester, O-ethyl dithiocarbonate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.69 Mixtures of methyl 2-ethoxycarbothioylsulfanylpropanoate (CAS No. 351491–23–1)