; octane-1,2-diol (CAS No. 1117–86–8) and water (CAS No. 7732–18–5) (provided for in subheading 3824.99.92) Free No change No change On or before 12/31/2025 . 11549. Lithium silicon oxide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.80 Lithium poly-silicate (lithium silicon oxide) in dark gray powdered form (CAS No. 12627–14–4) (provided for in subheading 3824.99.92) 3.9% No change No change On or before 12/31/2025 . 11550. Branched olefin from propylene polymerization Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.81 Branched olefin from propylene polymerization (12-[(2S,3R)-3-octyloxiran-2-yl]dodecanoic acid) (CAS No. 9003–07–0) (provided for in subheading 3902.10.00), the foregoing other than polypropylene in pellet form, containing 1 percent or more but not over 10 percent by weight of mineral filler (talc) and 10 percent or more but not over 30 percent by weight of carbon powder Free No change No change On or before 12/31/2025 . 11551. Polypropylene pellets Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.82 Polypropylene in pellet form, containing 1 percent or more but not over 10 percent by weight of mineral filler (talc) and 10 percent or more but not over 30 percent by weight of carbon powder (CAS No. 9003–07–0) (provided for in subheading 3902.10.00) Free No change No change On or before 12/31/2025 . 11552. Propylene-ethylene copolymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.83 Poly(propylene-co-ethylene) (CAS No. 9010–79–1) (provided for in subheading 3902.30.00), the foregoing other than ethylene-propylene copolymers containing 50 to 75 percent by weight of propylene 4.9% No change No change On or before 12/31/2025 . 11553. Ethylene-propylene copolymers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new