Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.73 cis-2-tert-Butylcyclohexyl acetate (Argumex) (CAS No. 20298–69–5) (provided for in subheading 2915.39.45) Free No change No change On or before 12/31/2020 . 173. Dichloroacetyl chloride Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.74 Dichloroacetyl chloride (DCAC) (CAS No. 79–36–7) (provided for in subheading 2915.40.50) Free No change No change On or before 12/31/2020 . 174. Methyl chloroacetate (MeCA) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.75 Methyl 2-chloroacetate (CAS No. 96–34–4) (provided for in subheading 2915.40.50) Free No change No change On or before 12/31/2020 . 175. Ethyl monochloroacetate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.76 Ethyl chloroacetate (CAS No. 105–39–5) (provided for in subheading 2915.40.50) Free No change No change On or before 12/31/2020 . 176. Vinyl neodecanoate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.78 Vinyl neodecanoate (vinyl 7,7-dimethyloctanoate) (CAS No. 51000–52–3) (provided for in subheading 2915.90.18) Free No change No change On or before 12/31/2020 . 177. Dilauroyl peroxide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.79 Dilauroyl peroxide (CAS No. 105–74–8) (provided for in subheading 2915.90.50) Free No change No change On or before 12/31/2020 . 178. Polyglyceryl-3 caprylate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.80 Triglyceryl octanoate (CAS No. 108777–93–1) (provided for in subheading 2915.90.50) Free No change No change On or before 12/31/2020 . 179. Butyl acrylate (buyl prop-2-enoate), Subchapter II of chapter 99 is amended by inserting in numerical