1-Phenyl-3-pyrazolidinone (Phenidone) from China
Phenidone is a pyrazolone derivative serving as a superadditive developing agent in black-and-white photographic developers. This aromatic heterocyclic compound accelerates silver halide reduction while minimizing fog formation. HTS 2934.99.20.00 covers it specifically as a photographic chemical.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include technical data sheets proving use in photographic developer formulations
• Comply with REACH/ TSCA registration for chemical import notifications
• Prevent reclassification as pharmaceutical intermediate by specifying photo-chemical application