No. 82919–37–7) (provided for in subheading 2933.39.61) Free No change No change On or before 12/31/2020 . 509. N,N'-Bis(2,2,6,6-tetramethyl-4-piperidinyl)isoph Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.16 N,N'-Bis(2,2,6,6-tetramethyl-4-piperidinyl)isophthalamide (CAS No. 42774–15–2) (provided for in subheading 2933.39.61). Free No change No change On or before 12/31/2020 . 510. Hindered amine light stabilizer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.17 3-Dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)-2,5-pyrrolidinedione (CAS No. 79720–19–7) (provided for in subheading 2933.39.61) Free No change No change On or before 12/31/2020 . 511. Acylated sterically hindered light stabilizer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.18 1-(1-Acetyl-2,2,6,6-tetramethyl-4-piperidinyl)-3-dodecyl-2,5-pyrrolidinedione (CAS No. 106917–31–1) (provided for in subheading 2933.39.61) Free No change No change On or before 12/31/2020 . 512. M-TMP intermediate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.19 2-Methoxy-4-(trifluoromethyl)pyridine (CAS No. 219715–34–1) (provided for in subheading 2933.39.61) Free No change No change On or before 12/31/2020 . 513. 2-Cyanopyridine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.20 2-Cyanopyridine (2-Pyridinecarbonitrile) (CAS No. 100–70–9) (provided for in subheading 2933.39.91) 3.4% No change No change On or before 12/31/2020 . 514. N-Butyl-TAD Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.21 N-Butyl-2,2,6,6-tetramethylpiperidin-4-amine (CAS No. 36177–92–1) (provided for in subheading 2933.39.91) Free No change No change On or before 12/31/2020 . 515. Food and feed preservative Subchapter II of chapter 99 is