; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (46) Mefenoxam Heading 9902.04.42 is amended— (A) by striking 4.2% and inserting 5.5% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (47) Flufenacet-alcohol Heading 9902.04.48 is amended— (A) by striking 3.9% and inserting 3.7% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (48) 2-( T rifluoromethyl)benzamide Heading 9902.04.49 is amended— (A) by striking 4.2% and inserting Free ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (49) Methyl-4-trifluoromethoxyphenyl-n-(chl.) carbamate Heading 9902.04.52 is amended— (A) by striking 2.0% and inserting 2.6% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (50) Guanidinoacetic Acid Heading 9902.04.64 is amended— (A) by striking Free and inserting 1.8% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (51) Chlorothalonil Heading 9902.04.65 is amended— (A) by striking 5% and inserting 5.6% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (52) Bromoxynil octanoate Heading 9902.04.67 is amended— (A) by striking Free and inserting 3.4% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (53) Bifenazate technical Heading 9902.04.85 is amended— (A) by striking Free and inserting 3.8% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (54) Mesotrione Heading 9902.05.03 is amended— (A) by striking 6.2% and inserting 6.1% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (55) 2-(Methylthio)-4-(trifluoromethyl)benzoic acid Heading 9902.05.08 is amended— (A) by striking Free and inserting 5.4% ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (56) Acephate Heading 9902.05.16 is amended— (A) by striking 3.2% and inserting Free ; and (B) by striking 12/31/2020 and inserting 12/31/2024 . (57) Methomyl Heading 9902.05.18 is amended— (A) by striking 5% and inserting Free