1-Phenyl-3-pyrazolidinone (Phenidone) from Japan
Phenidone is a pyrazolidinone derivative used as a superadditive developing agent in black-and-white photographic films and papers. This aromatic nitrogen-heterocycle enhances development speed when combined with other agents. It qualifies for HTS 2933.99.24.00 as a specialized photographic chemical.
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
• Declare exact chemical composition and CAS number (92-43-3); ensure proper hazard labeling for oxidizer properties; obtain end-user certificates for legitimate photographic use