U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2839.90.0000
$1.5M monthly imports
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Ruling Age
26 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-01 · Updates monthly
The tariff classification of Magnesium Trisilicate from Germany
NY E86777 September 14, 1999 CLA-2-28:RR:NC:SP:236 E86777 CATEGORY: Classification TARIFF NO.: 2839.90.0000 Mr. Joseph J. Chivini Austin Chemical Company, Inc. 1565 Barclay Boulevard Buffalo Grove, Illinois 60089 RE: The tariff classification of Magnesium Trisilicate from Germany Dear Mr. Chivini: In your letter dated September 2, 1999, you requested a tariff classification ruling. The applicable subheading for Magnesium Trisilicate will be 2839.90.0000, Harmonized Tariff Schedule of the United States, which provides for Silicates; commercial alkali metal silicates: Other. The rate of duty will be 3.1 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 you have any questions regarding the ruling, contact National Import Specialist V. Gualario at 212-637-7062. Sincerely, Robert B. Swierupski Director, National Commodity Specialist Division