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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Preparations containing 12-hydroxy-9-octadecenoic acid (Ricinoleic acid) of a kind used as a diluent in lubricants (CAS No. 141-22-0) (provided for in subheading 3811.21.00)......... 1/ 9902.10.21 On or before 12/31/2020 No change No change 4.8% 1/ Mixtures of hydrotreated neutral petroleum oils C20 - C50, of a kind used as viscosity improvers (CAS No. 72623-87-1) (provided for in subheading 3811.21.00). ................................. 1/ 9902.10.22 On or before 12/31/2020 No change No change Free 1/ Isobutyl 3-(diisobutoxy-thiophosphorylsulfanyl)-2-methyl-propanoate) (CAS No. 268567-32-4) (provided for in subheading 3811.29.00)................................................................................... 1/ 9902.10.23 On or before 12/31/2020 No change No change Free 1/ Mixtures containing poly(ethylene-co-ethenyl acetate) of a kind used as fuel additives (CAS No. 24937-78-8) (provided for in subheading 3811.90.00).............................................................. 1/ 9902.10.24 On or before 12/31/2020 No change No change 0.7% 1/ Mixtures of tall oil mono-, di-, and triglycerides of a kind used as lubricity improvers (CAS No. 97722-02-6) (provided for in subheading 3811.90.00).............................................................. 1/ 9902.10.25 On or before 12/31/2020 No change No change 2.8% 1/ Mixtures of caprolactam disulfide (CAS No. 23847-08-7) with an elastomer binder of ethylene-propylene-diene monomer and ethyl vinyl acetate, and dispersing agents (provided for in subheading 3812.10.50).............................................................. 1/ 9902.10.26 On or before 12/31/2020 No change No change Free 1/ Mixtures of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (CAS No. 330-54-1) with acrylate rubber (provided for in subheading 3812.10.50)................................................................................... 1/ 9902.10.27 On or before 12/31/2020 No change No change Free 1/ Mixtures of zinc dicyanato diamine ((T-4)-diamminebis(cyanato-κN)-zinc) (CAS No. 122012-52-6) with an elastomer binder of ethylene-propylene-diene monomer and ethyl vinyl acetate, and dispersing agents (provided for in subheading 3812.10.50).............................................................. 1/ 9902.10.28 On or before 12/31/2020 No change No change Free 1/ Plasticizers containing diphenyl cresyl phosphate (CAS No. 26444-49-5), triphenyl phosphate (CAS No. 115-86-6), tricresyl phosphate (CAS No. 1330-78-5), and phenyl dicresyl phosphate (CAS No. 26446-73-1) (provided for in subheading 3812.20.10)................................................................................... 1/ 9902.10.29 On or before 12/31/2020 No change No change Free 1/ Mixture of phenyl esters of C10-C18 alkylsulfonic acids (CAS No. 70775-94-9) (provided for in subheading 3812.20.10)...... 1/ 9902.10.30 On or before 12/31/2020 No change No change 3.2% 1/ Zinc 4-methyl-1H-benzimidazole-2-thiolate (CAS No. 61617-00-3) (provided for in subheading 3812.39.60)............ 1/ 9902.10.31 On or before 12/31/2020 No change No change Free 1/ 2,4-Dimethyl-6-(1-methylpentadecyl)phenol (CAS No. 134701-20-5) (provided for in subheading 3812.39.60).......... 1/ 9902.10.32 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 - 79 Note:The shaded areas indicate the provision has expired