Dibenzothiophene from Japan
Dibenzothiophene is a tricyclic aromatic compound with sulfur heterocycle fused between two benzene rings. Classified HTS 2930.90.2900 as aromatic organo-sulfur with S directly linked to aromatic carbons. Common pollutant in petroleum; used in OLED materials research.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• GC-MS analysis confirming >99% purity for chemically defined status
• Reference fuel standard applications require NIST traceability certification
• Not classifiable as Chapter 27 hydrocarbon per chapter exclusion