; and methyl 3-chloro-5-{[(4,6-dimethoxy-2-pyrimidinyl) carbamoyl] sulfamoyl}-1-methyl -1H-pyrazole-4-carboxylate (Halosulfuron-methyl) (CAS No. 100784–20–1) and application adjuvants (provided for in subheading 3808.93.15). ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (179) Mixtures of orthosulfamuron Heading 9902.10.12 is amended— (A) by amending the article description to read as follows: Mixtures of 1-(4,6-dimethoxypyrimidin-2-yl)-3-[2-dimethylcarbamoyl) phenylsulfamoyl] urea (Orthosulfamuron) (CAS No. 213464–77–8) and application adjuvants (provided for in subheading 3808.93.20) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (180) Propargite mixtures Heading 9902.10.19 is amended— (A) by amending the article description to read as follows: Mixtures containing 2-[4-(2-methyl-2-propanyl)phenoxy]cyclohexyl 2-propyn-1-yl sulfite (CAS No. 2312–35–8) (Propargite) and application adjuvants (provided for in subheading 3808.99.95) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (181) Mixtures used in rubber production Heading 9902.10.28 is amended— (A) by amending the article description to read as follows: 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) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (182) Antidegradants Heading 9902.10.31 is amended— (A) by amending the article description to read as follows: Antioxidizing preparations for rubber consisting of a mixture of 1,3-dihydro-4-methyl-2H-benzimidazole-2-thione and 1,3-dihydro-5-methyl-2H-benzimidazole-2-thione, in the form of zinc salts (CAS No. 61617–00–3) (provided for in subheading 3812.39.60)