3,3'-Di(2,4,6-trichlorophenyl)-4,4'-diaminodiphenylmethane from Canada
Polychlorinated diarylmethane used in stabilizer-coupler systems for color films. Provides both color development and image permanence functions. Heavily substituted aromatic structure qualifies for duty-free photographic import.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Chlorine content analysis confirms substitution pattern for tariff verification,Dark storage requirements prevent photodegradation during customs hold,Specific to silver halide color materials manufacturing processes