Dibenzofuran (Diphenylene Oxide) from Japan
Dibenzofuran is a tricyclic aromatic heterocyclic compound featuring oxygen as the only hetero-atom, specifically named in HTS 2932.99.32.00. It appears as white crystals used in synthesis and as a reference pollutant standard.
Duty Rate — Japan → United States
12.5%
Rate breakdown
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
• Include NMR or GC-MS spectra in documentation to confirm dibenzofuran structure and 99%+ purity
• Classify as hazardous material (UN 3077) due to environmental toxicity; prepare proper shipping papers
• Check TSCA inventory listing and obtain PMN if synthetic variant not pre-registered