acetate (CAS No. 167004–78–6) (provided for in subheading 2931.39.00) 3.2% No change No change On or before 12/31/2020 . 422. Methylphosphinic acid N-butyl ester (MPE) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.28 Butyl methylphosphinate (CAS No. 6172–80–1) (provided for in subheading 2931.39.00). 2.9% No change No change On or before 12/31/2020 . 423. PMIDA Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.29 2,2'-[(Phosphonomethyl)imino]diacetic acid hydrate (1:1) (CAS No. 5994–61–6) (provided for in subheading 2931.39.00) 2.8% No change No change On or before 12/31/2020 . 424. Triphenylphosphine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.30 Triphenyl phosphine (CAS No. 603–35–0) (provided for in subheading 2931.39.00) Free No change No change On or before 12/31/2020 . 425. Fenbutatin oxide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.31 Bis[tris(2-methyl-2-phenylpropyl)tin]oxide (Fenbutatin oxide) (CAS No. 13356–08–6) (provided for in subheading 2931.90.26) Free No change No change On or before 12/31/2020 . 426. Triphenyltin hydroxide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.32 Triphenyltin hydroxide (CAS No. 76–87–9) (provided for in subheading 2931.90.26) Free No change No change On or before 12/31/2020 . 427. Ultraviolet dye Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.33 (Triethoxysilyl)methyl anthracene-9-carboxylate (CAS No. 313482–99–4) (provided for in subheading 2931.90.30) Free No change No change On or before 12/31/2020 . 428. PBA Solid (phenyl boronic acid) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.05.34 4-Chloro-2-fluoro-3-methoxyphenylboronic acid (CAS