Phenanthroline from Japan
1,10-Phenanthroline is a tridentate heterocyclic ligand forming colored complexes with metal ions, used in analytical chemistry. Falls under HTS 2934.99.90.01 as other heterocyclic nitrogen compounds.
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
• Specify chelation capacity in technical data sheet for lab reagent verification
• Use child-resistant packaging if >1% concentration per CPSC rules
• Test for heavy metal impurities which affect complex formation purity