No. 124–41–4) (provided for in subheading 2905.19.90) Free No change No change On or before 12/31/2020 . 112. Magnesium tert-butoxide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.12 Magnesium bis(2-methyl-2-propanolate) (Magenesium tert-butoxide) (CAS No. 32149–57–8) (provided for in subheading 2905.19.90) Free No change No change On or before 12/31/2020 . 113. Propargyl alcohol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.13 2-Propyn-1-ol (propargyl alcohol) (CAS No. 107–19–7) (provided for in subheading 2905.29.90) Free No change No change On or before 12/31/2020 . 114. Leaf alcohol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.14 cis-3-Hexen-1-ol (CAS No. 928–96–1) (provided for in subheading 2905.29.90) Free No change No change On or before 12/31/2020 . 115. Purolan PD-LO Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.15 1,2-Pentanediol (CAS No. 5343–92–0) (provided for in subheading 2905.39.90) Free No change No change On or before 12/31/2020 . 116. 2,5-Dimethylhexane-2,5-diol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.16 2,5-Dimethyl-2,5-hexanediol (CAS No. 110–03–2) (provided for in subheading 2905.39.90) Free No change No change On or before 12/31/2020 . 117. Menthol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.17 d -Menthol (CAS No. 15356–60–2)(provided for in subheading 2906.11.00) Free No change No change On or before 12/31/2020 . 118. α-Naphthol Subchapter II of chapter 99 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