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N358617 · 2026-03-06 — The tariff classification of Difluoromethane (CAS No. 75-10-5) and Carbonyl Sulfide (CAS No. 463-58-1) from Japan
The first product, difluoromethane is also known as HFC-32. Based on the provided Safety Data Sheet (SDS), it is 99.9 percent pure. You indicate that it will be imported in gas cylinders and will be used in semiconductor applications. The second product is carbonyl sulfide (COS). Based on the provided SDS, it is 100 percent pure. You indicate that it will be imported in gas cylinders and will be used in semiconductor applications. The applicable subheading for Difluoromethane, CAS No. 75-10-5, will be 2903.42.1000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for…
N333731 · 2023-07-07 — The tariff classification of Carbonyl Sulfide, CAS# 463-58-1, from China
You describe the subject product as 100% Carbonyl Sulfide, CAS# 463-58-1. Carbonyl Sulfide is a colorless chemical compound with a chemical formula of COS. The provided Safety Data Sheet indicates that this product is gas under pressure and extremely flammable. For classification purposes, it is presumed that the subject product meets the requirements of Note 1 to Chapter 28, Harmonized Tariff Schedule of the United States, (HTSUS). The applicable subheading for Carbonyl Sulfide, CAS# 463-58-1, will be 2830.90.9000, HTSUS, which provides for Sulfides; polysulfides, whether or not chemically…
N320465 · 2021-07-12 — The tariff classification of Carbonyl Sulfide (CAS# 463-58-1), Sulfur Hexafluoride (CAS# 2551-62-4), and Iodine Pentafluoride (CAS# 7783-66-6) from Japan; Correction to Ruling Number N319751
This letter replaces Ruling Number N319751 dated June 14, 2021, which contained a clerical error. The incorrect subheading classification was indicated for Sulfur Hexafluoride and Iodine Pentafluoride. A complete and corrected ruling follows. In your ruling request dated May 28, 2021, on behalf of your client, Kanto Denka Kogyo Co., Ltd., you requested a tariff classification ruling on Carbonyl Sulfide (CAS# 463-58-1), Sulfur Hexafluoride (CAS# 2551-62-4), and Iodine Pentafluoride (CAS# 7783-66-6). You describe the subject products as chemical compounds intended for use in manufacturing…
N319751 · 2021-06-14 — The tariff classification of Carbonyl Sulfide (CAS# 463-58-1), Sulfur Hexafluoride (CAS# 2551-62-4), and Iodine Pentafluoride (CAS# 7783-66-6) from Japan
In your ruling request dated May 28, 2021, on behalf of your client, Kanto Denka Kogyo Co., Ltd., you requested a tariff classification ruling on Carbonyl Sulfide (CAS# 463-58-1), Sulfur Hexafluoride (CAS# 2551-62-4), and Iodine Pentafluoride (CAS# 7783-66-6). You describe the subject products as chemical compounds intended for use in manufacturing semiconductors. Carbonyl Sulfide (CAS# 463-58-1) is a gas with the chemical formula COS, Sulfur Hexafluoride (CAS# 2551-62-4) is a gas with the chemical formula SF6, and Iodine Pentafluoride (CAS# 7783-66-6) is a liquid with the chemical formula…
N306461 · 2019-10-24 — The tariff classification of “Molybdenum Disulphide” from India
(America), Inc., you requested a tariff classification ruling on “Molybdenum Disulphide.” In your submission, you describe the product at issue as an inorganic chemical compound with greater than 98% purity. The provided Safety Data Sheet identifies “Molybdenum Disulphide” by CAS # 1317-33-5 and empirical formula as MoS2. You state that the subject product is intended to be used in grease/lubricant applications. The applicable subheading for “Molybdenum Disulphide” will be 2830.90.9000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Sulfides; polysulfides, whether…
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