1-Phenyl-5-methyl-3-pyrazolone from Canada
Pyrazolone coupler intermediate for cyan dye formation in color reversal films. Aromatic pyrazole structure under HTS 2933.19.30 as photographic chemical. Critical for E-6 process transparency films.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Process-specific documentation (E-6 compatibility) strengthens photographic claim
• Purity >99.5% required; HPLC certificates prevent purity-based challenges
• Ship in amber glass to prevent photo-degradation, maintaining chemical integrity