(CAS No. 2082–79–3) (provided for in subheading 2918.29.75) Free No change No change On or before 12/31/2020 . 210. Antioxidant Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.14 Pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) (CAS No. 6683–19–8) (provided for in subheading 2918.29.75) Free No change No change On or before 12/31/2020 . 211. Solbrol A Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.15 Ethyl 4-hydroxybenzoate (CAS No. 120–47–8) (provided for in subheading 2918.29.75) Free No change No change On or before 12/31/2020 . 212. Solbrol M Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.16 Methyl 4-hydroxybenzoate (CAS No. 99–76–3) (provided for in subheading 2918.29.75) Free No change No change On or before 12/31/2020 . 213. Polymer additives Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.17 Hexadecyl 4-hydroxy-3,5-bis(2-methyl-2-propanyl)benzoate (CAS No. 67845–93–6) (provided for in subheading 2918.29.75) Free No change No change On or before 12/31/2020 . 214. 2-Benzoylbenzoic acid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.18 2-Benzoylbenzoic acid (CAS No. 85–52–9) (provided for in subheading 2918.30.30) 3.7% No change No change On or before 12/31/2020 . 215. Prohexadione calcium (calc) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.19 Prohexadione-calcium (Calcium bis(3,5-dioxo-4-propionylcyclohexanecarboxylate)) (CAS No. 127277–53–6) (provided for in subheading 2918.30.90) Free No change No change On or before 12/31/2020 . 216. Glyoxylic acid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.20 Glyoxyl acid (Glyoxylic acid) (CAS No. 298–12–4)