1-Phenyl-3-pyrazolidinone (Phenidone) from Germany
Phenidone is a pyrazolidinone derivative serving as a superadditive developing agent in black-and-white photographic film development. Its unfused pyrazolone ring structure places it under HTS 2933.19.30 as a photographic chemical. It accelerates silver halide reduction when combined with metol or hydroquinone.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Submit technical data sheets showing compatibility with standard photographic developers to confirm classification
• Verify purity levels (>98%) typical for photographic grade; impure grades risk reclassification as general organic chemicals