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) (provided for in subheading 2918.30.90) Free No change No change On or before 12/31/2020 . 217. Dichlorprop-p Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.21 (+)-(R)-2-(2,4-Dichlorophenoxy)propanoic acid (Dichlorprop-p) (CAS No. 15165–67–0) (provided for in subheading 2918.99.18) Free No change No change On or before 12/31/2020 . 218. 2,4-DB Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.22 4-(2,4-Dichlorophenoxy) butyric acid (2,4-DB) (CAS No. 94-82-6) (provided for in subheading 2918.99.20) Free No change No change On or before 12/31/2020 . 219. MCPA Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.23 2-Methyl-4-chlorophenoxyacetic acid (MCPA) (CAS No. 94–74–6) (provided for in subheading 2918.99.20) 1.3% No change No change On or before 12/31/2020 . 220. Lactofen Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.24 1-Ethoxy-1-oxo-2-propanyl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate (Lactofen) (CAS No. 77501–63–4) (provided for in subheading 2918.99.20) 4.0% No change No change On or before 12/31/2020 . 221. Other carboxylic acid: (Irganox¿AE 245) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.25 Triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methyl- phenyl)propionate] (CAS No. 36443–68–2) (provided for in subheading 2918.99.43) Free No change No change On or before 12/31/2020 . 222. 4,4ʹ-Oxydiphthalic anhydride Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.26 4,4ʹ-Oxydiphthalic