is amended by inserting in numerical sequence the following new heading: 9902.02.19 α-Naphthol (CAS No. 90–15–3) (provided for in subheading 2907.15.10) Free No change No change On or before 12/31/2020 . 119. Thymol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.20 Thymol (2-isopropyl-5-methylphenol) (CAS No. 89–83–8) (provided for in subheading 2907.19.40) Free No change No change On or before 12/31/2020 . 120. Preventol O extra, preventol O extra preservative Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.21 2-Phenylphenol (CAS No. 90–43–7) (provided for in subheading 2907.19.80) Free No change No change On or before 12/31/2020 . 121. Preventol ON extra preservative Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.22 2-Phenylphenol sodium salt (CAS No. 132–27–4) (provided for in subheading 2907.19.80) Free No change No change On or before 12/31/2020 . 122. Resorcinol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.23 Resorcinol (CAS No. 108–46–3) (provided for in subheading 2907.21.00) 0.5% No change No change On or before 12/31/2020 . 123. Pyrogallic acid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.24 Pyrogallol (Pyrogallic acid) (CAS No. 87–66–1) (provided for in subheading 2907.29.10) Free No change No change On or before 12/31/2020 . 124. Leucoquinizarin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.25 Leucoquinizarin as 1,4,9,10-tetrahydroxyanthracene (CAS No. 476–60–8), 2,3-dihydro-9,10-dihydroxyanthracene-1,4-dione (CAS No. 17648–03–2) or 2,3-dihydro-1,4-dihydroxy-9,10-anthracenedione (CAS No. 40498–13–3) (provided for in subheading 2907.29.90 or 2914.69.90) Free No change No change On or before 12/31/2020 . 125.