;1,1-diphosphonatoethanol (CAS No. 3794–83–0), in granule form, with a particle size of 250 µm to 850 µm (provided for in subheading 2931.39.00) Free No change No change On or before 12/31/2024 . 4324. Trimethylchlorosilane Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.21.29 Chloro(trimethyl)silane (CAS No. 75–77–4) (provided for in subheading 2931.90.90) Free No change No change On or before 12/31/2024 . 4325. Chloro-(chloromethyl)-dimethylsilane Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.21.30 Chloro-(chloromethyl)-dimethylsilane (CAS No. 1719–57–9) (provided for in subheading 2931.90.90) Free No change No change On or before 12/31/2024 . 4326. Silicone for electronics cleaners Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.21.31 [Dimethyl(trimethylsilyloxy) silyl]oxy-dimethyl-trimethylsilyloxysilane (CAS No. 141–62–8) (provided for in subheading 2931.90.90) Free No change No change On or before 12/31/2024 . 4327. Silicon carrier fluid for active lotions, creams Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.21.32 Dodecamethylpentasiloxane