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N317383 · 2021-02-12 — The tariff classification of “Hexafluoro-1, 3-Butadiene” and “Disilane” from China
” Your request indicates that “Hexafluoro-1, 3-Butadiene” (C4F6), (CAS # 685-63-2), also known as 1,1,2,3,4,4-Hexafluorobuta-1,3-diene, is a colorless, odorless, gas. This product will be used as an etching agent in semiconductor production. You indicate that “Disilane” (Si2H6), (CAS # 1590-87-0), also known as a hydride, is a colorless, odorless, compressed gas. This product will be used as a silicon precursor for low temperature and epitaxial thin films. The applicable subheading for “Hexafluoro-1, 3-Butadiene” (C4F6), (CAS No 685-63-2) will be 2903.39.2045, Harmonized Tariff Schedule of…
N053681 · 2009-03-24 — The tariff classification of Sodium Azide (CAS#26628-22-8)
You state in your letter that this chemical will be used in pharmaceutical application. The applicable subheading for the Sodium Azide will be 2850.00.5000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: Other. The general rate of duty will be 3.7 percent ad valorem. Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on…
N044479 · 2008-11-26 — The tariff classification of Silicon Tetrahydride, (CAS# 7803-62-5) from Canada
The applicable subheading for the Silicon Tetrahydride, will be 2850.00.5000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: Other. The rate of duty will be 3.7 percent ad valorem. Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/. This ruling is being issued under the…
L80255 · 2004-11-24 — The tariff classification of Sodium Azide (CAS# 26628-22-8) from Japan
The applicable subheading for the Sodium Azide will be 2850.00.5000, Harmonized Tariff Schedule of the United States, which provides for Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: Other. The rate of duty will be 3.7 percent ad valorem. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If…
I87216 · 2002-10-10 — The tariff classification of Sodium Azide from Japan
The applicable subheading for the Sodium Azide will be 2850.00.0000, Harmonized Tariff Schedule of the United States, which provides for Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbrides of heading 2849: Other. The rate of duty will be 3.7 percent ad valorem. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported.…
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