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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Lecithin derived from non-genetically modified soybean (CAS No. 8002-43-5) (provided for in subheading 2923.20.20) ...... 1/ 9902.04.19 On or before 12/31/2020 No change No change Free 1/ (Z)-N-Methyl-N-(1-oxo-9-octadecenyl)glycine (N-oleylsarcosine) (CAS No. 110-25-8) (provided for in subheading 2924.19.11).............................................................. 1/ 9902.04.20 On or before 12/31/2020 No change No change Free 1/ N-Ethenylformamide (N-vinylformamide) (CAS No. 13162-05-5) (provided for in subheading 2924.19.11)............ 1/ 9902.04.21 On or before 12/31/2020 No change No change 3.3% 1/ 3-Oxobutanamide (acetoacetamide) (CAS No. 5977-14-0) (provided for subheading 2924.19.11) ...................................... 1/ 9902.04.22 On or before 12/31/2020 No change No change Free 1/ N-[3-(Dimethylamino)propyl]-2-methylacrylamide (CAS No. 5205-93-6) (provided for in subheading 2924.19.11).............. 1/ 9902.04.23 On or before 12/31/2020 No change No change Free 1/ 1,1,3,3-Tetrabutylurea (CAS No. 4559-86-8) (provided for in subheading 2924.19.11).............................................................. 1/ 9902.04.24 On or before 12/31/2020 No change No change Free 1/ N-(2-Methyl-4-oxo-2-pentanyl)acrylamide (CAS No. 2873-97-4) (provided for in subheading 2924.19.11)................................... 1/ 9902.04.25 On or before 12/31/2020 No change No change Free 1/ N,N,N',N'-Tetrakis(2-hydroxypropyl)-adipamide (CAS No. 57843-53-5) (provided for in subheading 2924.19.80)............ 1/ 9902.04.26 On or before 12/31/2020 No change No change Free 1/ N,N,N',N'-Tetrakis(2-2-hydroxyethyl)-adipamide (CAS No. 6334-25-4) (provided for in subheading 2924.19.80).............. 1/ 9902.04.27 On or before 12/31/2020 No change No change Free 1/ 2,2-Dichloro-N,N-bis(prop-2-enyl)acetamide (Dichlormid) (CAS No. 37764-25-3) (provided for in subheading 2924.19.80)...... 1/ 9902.04.28 On or before 12/31/2020 No change No change Free 1/ 3-(3,4-Dichlorophenyl)-1,1-dimethylurea (Diuron) (CAS No. 330-54-1) (provided for in subheading 2924.21.16)................ 1/ 9902.04.30 On or before 12/31/2020 No change No change 0.4% 1/ 3-(3,4-Dichlorophenyl)-1-methoxy-1-methylurea (CAS No. 330-55-2) (Linuron) (provided for in subheading 2924.21.16)................................................................................... 1/ 9902.04.31 On or before 12/31/2020 No change No change Free 1/ N,N'-Hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocin- namamide) (3,3'-bis(3,5-di-tert-butyl-4-hydroxyphenyl)-N,N'-hexa- methylenedipropionamide) (CAS No. 23128-74-7) (provided for in subheading 2924.29.31).................................................... 1/ 9902.04.32 On or before 12/31/2020 No change No change Free 1/ Isopropyl (3-chlorophenyl)carbamate (Chlorpropham) (CAS No. 101-21-3) (provided for in subheading 2924.29.43)......... 1/ 9902.04.33 On or before 12/31/2020 No change No change Free 1/ Propoxur (2-(1-methylethoxy)phenyl N-methylcarbamate) (CAS No. 114-26-1) (provided for in subheading 2924.29.47)......... 1/ 9902.04.34 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 - 23 Note:The shaded areas indicate the provision has expired