in subheading 2919.90.50) 0.7% No change No change On or before 12/31/2020 . 234. Tolclofos methyl Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.38 O-(2,6-Dichloro-4-methylphenyl) O,O-dimethyl phosphorothioate (Tolclofos methyl) (CAS No. 57018–04–9) (provided for in subheading 2920.19.40) Free No change No change On or before 12/31/2020 . 235. O,O-Diethyl phosphorochloridothioate - DEPCT Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.39 O,O-Diethyl phosphorochloridothioate (CAS No. 2524–04–1) (provided for in subheading 2920.19.50) Free No change No change On or before 12/31/2020 . 236. Albrite DMHP Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.40 Dimethyl phosphite (CAS No. 868–85–9) (provided for in subheading 2920.21.00) Free No change No change On or before 12/31/2020 . 237. Propargite Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.41 2-[4-(2-Methyl-2-propanyl)phenoxy]cyclohexyl 2-propyn-1-yl sulfite (Propargite) (CAS No. 2312–35–8) (provided for in subheading 2920.90.10) Free No change No change On or before 12/31/2020 . 238. Antioxidant Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.42 Tris(2,4-di-tert-butylphenyl) phosphite (CAS No. 31570–04–4) (provided for in subheading 2920.90.20) Free No change No change On or before 12/31/2020 . 239. Fosetyl-Al Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.43 Aluminum tris(ethyl phosphonate) (Fosetyl-Al) (CAS No. 39148–24–8) (provided for in subheading 2920.90.51) Free No change No change On or before 12/31/2020 . 240. Perkadox 16 Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.44 Bis(4-t-butylcyclohexyl)peroxydicarbonate (CAS No.