3,3'-Diethyloxadicarbocyanine Iodide from Canada
A cyanine dye used as a spectral sensitizer for panchromatic photographic emulsions, extending silver halide sensitivity to red light. This heterocyclic quaternary salt is critical for color-corrected films. Qualified for HTS 2933.99.24.00 as photographic chemical.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Quaternary ammonium salt classification per Chapter notes; provide spectral data confirming sensitizing range; ensure light-tight packaging