U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2621.90.000
$2.4M monthly imports
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Ruling Age
23 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-29 · Updates monthly
The tariff classification of silicon dross from Russia
NY I87036 December 3, 2002 CLA-2:RR:NC:2:226 NY I87036 CATEGORY: Classification TARIFF NO.: 2621.90.000 Mr. John Roux Cometals 222 Bridge Plaza South Fort Lee, NJ 07024 RE: The tariff classification of silicon dross from Russia Dear Mr. Roux: In your letter dated October 1, 2002 you requested a tariff classification ruling regarding silicon dross from Russia. A sample was submitted with your ruling request. This sample was submitted to our Customs laboratory for analysis. In your letter you indicated that the merchandise in question is a by-product or dross of the production of elemental silicon. You indicated that the dross consists largely of elemental silicon as well as silicon dioxide with smaller amounts of calcium and aluminum oxides. Analysis of the sample by our Customs laboratory confirms your description. You stated that the dross will be used “in the production of alloy briquettes, as a furnace addition in the production of iron.” The applicable subheading for the silicon dross will be 2621.90.0000, Harmonized Tariff Schedule of the United States (HTS), which provides for other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste: other. The rate of duty will be free. 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 you have any questions regarding the ruling, contact National Import Specialist Jacob Bunin at 646-733-3027. Sincerely, Robert B. Swierupski Director National Commodity Specialist Division