2-(2,4-Di-tert-pentylphenoxy)-N-(3-nitro-2-oxo-1H-indol-3-yl)acetamide from Canada
Complex indole-based coupler for high-sensitivity color negative films. The ballasted phenolic structure prevents migration in emulsion layers while maintaining reactivity. Advanced aromatic system qualifies under special photographic chemical tariff provision.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• High molecular weight requires special temperature-controlled shipping,Customs may require synthesis pathway from basic aromatics to verify chapter 29 status,Limited to manufacturers with established film emulsion production facilities