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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General (1Z)-N-{(Z)-[(Cyclopropylmethoxy)imino][2,3-difluoro-6-(trifluor- omethyl)phenyl]methyl}-2-phenylethanimidic acid (Cyflufenamid) (CAS No. 180409-60-3) (provided for in subheading 2928.00.25).............................................................. 1/ 9902.04.87 On or before 12/31/2020 No change No change Free 1/ N-(4-Ethylbenzoyl)-3,5-dimethyl-N-(2-methyl-2-propanyl)ben- zohydrazide (Tebufenozide) (CAS No. 112410-23-8) (provided for in subheading 2928.00.25).................................................... 1/ 9902.04.88 On or before 12/31/2020 No change No change Free 1/ Carbonohydrazide (CAS No. 497-18-7) (provided for in subheading 2928.00.50).............................................................. 1/ 9902.04.89 On or before 12/31/2020 No change No change Free 1/ 2-(N-Ethoxypropanimidoyl)-3-hydroxy-5-mesityl-2-cyclohexen-1-one (tralkoxydim) (CAS No. 87820-88-0) (provided for in subheading 2928.00.50).............................................................. 1/ 9902.04.90 On or before 12/31/2020 No change No change Free 1/ 4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50)................................................................................... 1/ 9902.04.91 On or before 12/31/2020 No change No change Free 1/ Aminoguanidine bicarbonate (CAS No. 2582-30-1) (provided for in subheading 2928.00.50) ................................................... 1/ 9902.04.92 On or before 12/31/2020 No change No change Free 1/ Adipic dihydrazide (Hexanedihydrazide) (CAS No. 1071-93-8) (provided for in subheading 2928.00.50)................................... 1/ 9902.04.93 On or before 12/31/2020 No change No change Free 1/ Bitolylene diisocyanate (3,3'-dimethylbiphenyl-4,4'-diyl diisocyanate ) (CAS No. 91-97-4) (provided for in subheading 2929.10.20)................................................................................... 1/ 9902.04.94 On or before 12/31/2020 No change No change Free 1/ 4-Chlorophenyl isocyanate (CAS No.104-12-1) (provided for in subheading 2929.10.80).......................................................... 1/ 9902.04.95 On or before 12/31/2020 No change No change Free 1/ Phenyl isocyanate (CAS No. 103-71-9) (provided for in subheading 2929.10.80).............................................................. 1/ 9902.04.96 On or before 12/31/2020 No change No change Free 1/ Ethyl [4-chloro-2-fluoro-5-[[[[methyl(1-methylethyl)a- mino]sulfonyl]amino]carbonyl]phenyl]carbamate (CAS No. 874909-61-2) (provided for in subheading 2929.90.15).......... 1/ 9902.04.97 On or before 12/31/2020 No change No change 5.5% 1/ N-Butylthiophosphoric triamide (CAS No. 94317-64-3) (provided in subheading 2929.90.50)........................................ 1/ 9902.04.98 On or before 12/31/2020 No change No change Free 1/ S-4-Chlorobenzyl diethylcarbamothioate (Thiobencarb) (CAS No. 28249-77-6) (provided in subheading 2930.20.10)........... 1/ 9902.04.99 On or before 12/31/2020 No change No change Free 1/ S-Ethyl dipropyl(thiocarbamate) (EPTC) (CAS No. 759-94-4) (provided for in subheading 2930.20.90)................................... 1/ 9902.05.01 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 28 Note:The shaded areas indicate the provision has expired