amended by inserting in numerical sequence the following new heading: 9902.03.75 Mixed xylidines (CAS No. 1300–73–8) (provided for in subheading 2921.49.45) Free No change No change On or before 12/31/2020 . 272. Dodecyl aniline mixed isomers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.76 Dodecylaniline branched isomers (CAS No. 68411–48–3) (provided for in subheading 2921.49.45) Free No change No change On or before 12/31/2020 . 273. Flumetralin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.77 N-(2-Chloro-6-fluorobenzyl)-N-ethyl-α,α,α-trifluoro- 2,6-dinitro-p-toluidine (Flumetralin) (CAS No. 62924–70–3) (provided for in subheading 2921.49.45) Free No change No change On or before 12/31/2020 . 274. Amino methyl benzene Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.78 (1S)-1-Phenylethanamine (CAS No. 618–36–0) (provided for in subheading 2921.49.50) Free No change No change On or before 12/31/2020 . 275. 2-Ethyl-6-methylaniline Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.79 2-Ethyl-6-methylaniline (CAS No. 24549–06–2) (provided for in subheading 2921.49.50) Free No change No change On or before 12/31/2020 . 276. mPDA Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.80 m-Phenylenediamine (CAS No. 108–45–2) (provided for in subheading 2921.51.10) Free No change No change On or before 12/31/2020 . 277. MPD Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.81 1,3-Benzenediamine (CAS No. 108–45–2) (provided for in subheading 2921.51.10) 4.6% No change No change On or before 12/31/2020 . 278. 4-ADPA (4-aminodiphenylamine) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.82