Sebacic acid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.93 Sebacic acid (CAS No. 111–20–6) (provided for in subheading 2917.13.00) 2.8% No change No change On or before 12/31/2020 . 192. Dimethyl malonate or DMM Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.94 Dimethyl malonate (CAS No. 108–59–8) (provided for in subheading 2917.19.70) Free No change No change On or before 12/31/2020 . 193. Itaconic acid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.95 Itaconic acid (2-methylidenebutanedioic acid) (CAS No. 97–65–4) (provided for in subheading 2917.19.70) Free No change No change On or before 12/31/2020 . 194. Himic anhydride Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.96 Himic anhydride (1,2,3,6-tetrahydro-3,6-methanophthalic anhydride) (CAS No. 826–62–0) (provided for in subheading 2917.20.00) Free No change No change On or before 12/31/2020 . 195. 4-Sulfo-1,8-napthalic anhydride potassium salt Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.97 Potassium 1,3-dioxo-1H,3H-benzo[de]isochromene-6-sulfonate (CAS No. 71501–16–1) (provided in subheading 2917.39.04) Free No change No change On or before 12/31/2020 . 196. BPDA-U Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.02.99 5,5'-Bi-2-benzofuran-1,1',3,3'-tetrone (CAS No. 2420–87–3) (provided for in subheading 2917.39.30) Free No change No change On or before 12/31/2020 . 197. 1,4,5,8-Naphthalene tetra- Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.03.01 Naphthalene-1,8:4,5-tetracarboxylic dianhydride (CAS No. 81–30–1) (provided for in subheading 2917.39.70) Free No change No change On or before 12/31/2020 . 198. Pyromellitic