9902.06.92 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate (CAS No. 96478–09–0) (provided for in subheading 2933.99.79) Free No change No change On or before 12/31/2020 . 586. Hydro Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.93 2-Phenylbenzimidazole-5-sulfonic acid (Ensulizole) (CAS No. 27503–81–7 ) (provided for in subheading 2933.99.79) Free No change No change On or before 12/31/2020 . 587. Amino ethyl carbazole (AEC) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.94 9-Ethyl-9H-carbazol-3-amine (amino ethyl carbazole) (CAS No. 132–32–1) (provided for in subheading 2933.99.82) Free No change No change On or before 12/31/2020 . 588. 1,3 Diamino isoindoline Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.95 1H-Isoindole-1,3(2H)-diimine (1,3 diamino isoindoline) (CAS No. 3468–11–9) (provided for in subheading 2933.99.82) Free No change No change On or before 12/31/2020 . 589. Polyaziridine (PZ-33) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.96 3-{[3-(1-Aziridinyl)propanoyl]oxy}-2-({[3-(1-aziridinyl)propanoyl]oxy}methyl)-2-(hydroxymethyl)propyl 3-(1-aziridinyl)propanoate (CAS No. 57116–45–7) (provided for in subheading 2933.99.97) Free No change No change On or before 12/31/2020 . 590. 1,2,4-Triazole Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.97 1H-[1,2,4]Triazole (1,2,4-Triazole) (CAS No. 288–88–0) (provided for in subheading 2933.99.97) 2.8% No change No change On or before 12/31/2020 . 591. 3-Amino-5-mercapto-1,2,4- Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.98 5-Amino-1,2-dihydro-3H-1,2,4-triazole-3-thione (CAS No.16691–43–3) (provided for in subheading 2933.99.97) Free No change No change On or before 12/31/2020 .