Other: — Other: — Products described in additional U.S. note 3 to section VI
Part of: 293590 — Other:
N357263 · 2026-07-20 — The tariff classification of N-Phenyl-N-(trichloromethylsulfenyl)-benzenesulfonamide (CAS No. 2280-49-1) from China
, dated December 22, 2025, and an earlier submission, you requested a tariff classification ruling. The instant merchandise is N-Phenyl-N-(trichloromethylsulfenyl)-benzenesulfonamide. It has the product name of “Safic-Chem REC” Safic-Chem REC is described as a medical intermediate and rubber vulcanizing agent. It will be imported in bulk as a dry powder in combination with calcium carbonate, and hydrotreated heavy paraffinic distillate (petroleum), which you describe as functioning, respectively, as a stabilizer, and dedusting agent. In your earlier submission, you suggest classification of…
N334917 · 2023-09-13 — The tariff classification of Sodium bis(trifluoromethane)sulfonimide (CAS # 91742-21-1) from China
The subject merchandise is Sodium bis(trifluoromethane)sulfonimide (CAS # 91742-21-1). You state that the product is a solid white powder and will be used in electrical vehicles, e-bikes, flat panel screens, smartphone, laptop & power tools mainly as antistatic agents, or as electrolyte salt for batteries. Solvay sodium bis-trifluoromethanesulfonimide can be used as an electrolyte additive or as a main salt. The applicable subheading for the Sodium bis(trifluoromethane)sulfonimide will be 2935.90.7500, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Sulfonamides:…
N333617 · 2023-06-29 — The tariff classification of Pergafast 201 from China
Pergafast 201 is an organic chemical compound, said to be used as a color developer for thermal papers. Its chemical name is identified as 3-{[(4-methylbenzenesulfonyl) carbamoyl] amino} phenyl 4-methylbenzene-1-sulfonate (CAS # 232938-43-1). It is a key component of a thermally reactive layer on top of a base paper. The other components (not subject to this ruling) include color formers (which are leuco dyes), sensitizers, and binders. During printing, the thermal head of the printing unit pulses heat to the paper, which causes the components to melt, triggering the transfer of a proton from…
N331000 · 2023-03-16 — The tariff classification of a chemical intermediate from the United Kingdom.
The product, CYT-0851 Spray Dried Intermediate is an intermediate pharmaceutical product created when CYT-0851(CAS# 2301085-04-9) from the United States is sent to the United Kingdom for further processing into the above mentioned intermediate. The country of origin of this intermediate is the United Kingdom. This compound will be imported in noncommercial quantities solely for further processing into a final drug capsule form to be used for clinical studies in developmental clinical trials. The applicable subheading for the CYT-0851 Spray Dried Intermediate will be 2935.90.7500, Harmonized…
N305182 · 2019-07-26 — The tariff classification of Chemical Intermediates from Ireland and China
The products are as follows: Item 1 The first product, “Chemical A,” is a proprietary, separate intermediate organic chemical compound in the synthesis of an experimental Alzheimer’s drug in Phase III clinical trials. The country of origin is Ireland. This compound will be imported in noncommercial quantities and will be used solely for quality control testing. The applicable subheading for the advanced intermediate compound, “Chemical A,” will be 2935.90.7500, Harmonized Tariff Schedule of the United States (HTSUS), which provides for: Sulfonamides: Other: Other: Other: Products described in…
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