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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Silver sodium zirconium hydrogenphosphate (CAS No. 265647-11-8) (provided for in subheading 2843.29.01).......... 1/ 9902.01.69 On or before 12/31/2020 No change No change Free 1/ Mixtures or coprecipitates of yttrium phosphate (CAS No. 13990-54-0) and cerium phosphate (CAS No. 13454-71-2) (provided for in subheadings 2846.10.00 and 2846.90.80)..... 1/ 9902.01.70 On or before 12/31/2020 No change No change Free 1/ Lanthanum(III) oxide (CAS No. 1312-81-8) (provided for in subheading 2846.90.80).............................................................. 1/ 9902.01.71 On or before 12/31/2020 No change No change 2.4% 1/ Lanthanum carbonate (CAS No. 54451-24-0) (provided for in subheading 2846.90.80).............................................................. 1/ 9902.01.72 On or before 12/31/2020 No change No change Free 1/ Lutetium oxide (CAS No. 12032-20-1) (provided for in subheading 2846.90.80).............................................................. 1/ 9902.01.73 On or before 12/31/2020 No change No change 2.2% 1/ Lanthanum phosphate, cerium terbium-doped (CAS No. 95823-34-0) (provided for in subheading 2846.90.80)............ 1/ 9902.01.74 On or before 12/31/2020 No change No change Free 1/ Yttrium oxides having a purity of at least 99.9 percent (CAS No. 1314-36-9) (provided for in subheading 2846.90.80)....... 1/ 9902.01.75 On or before 12/31/2020 No change No change Free 1/ Ytterbium trifluoride powder (CAS No. 13760-80-0) with a median particle size of greater than 0.2 microns and less than 0.7 microns (provided for in subheading 2846.90.80) ............. 1/ 9902.01.76 On or before 12/31/2020 No change No change Free 1/ Titanium(2+) dihydride (Titanium hydride) (CAS No. 7704-98-5) (provided for in subheading 2850.00.07).............. 1/ 9902.01.77 On or before 12/31/2020 No change No change Free 1/ Mixtures containing titanium dihydride pastes of a kind used for coating the interior of low-pressure mercury lamps (CAS No. 7704-98-5) (provided for in subheading 2850.00.07) ...... 1/ 9902.01.78 On or before 12/31/2020 No change No change Free 1/ Lithium tetrahydridoaluminate(1-) (Lithium aluminum hydride) (CAS No. 16853-85-3) (provided for in subheading 2850.00.50)................................................................................... 1/ 9902.01.79 On or before 12/31/2020 No change No change Free 1/ Cyanamide (CAS No. 420-04-2) (provided for in subheading 2853.90.90)................................................................................... 1/ 9902.01.80 On or before 12/31/2020 No change No change Free 1/ n-Butyl chloride (1-Chlorobutane) (CAS No. 109-69-3) (provided for in subheading 2903.19.60) .................................. 1/ 9902.01.81 On or before 12/31/2020 No change No change Free 1/ 1,6-Dichlorohexane (CAS No. 2163-00-0) (provided for in subheading 2903.19.60) ............................................................. 1/ 9902.01.82 On or before 12/31/2020 No change No change Free 1/ Allyl Bromide (3-bromo-1-propene) (CAS No. 106-95-6) (provided for in subheading 2903.39.20)................................... 1/ 9902.01.83 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 7 Note:The shaded areas indicate the provision has expired