Triethanolamine Hydroxyhydroquinone from Canada
TEHQ serves as a silver halide preservative and stabilizer in photographic emulsions and developers. This aromatic derivative prevents oxidation during film storage and processing. HTS 2934.99.20.00 specifically includes such photographic stabilizers.
Duty Rate — Canada → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include formulation recipes showing concentration in photographic products
• Ensure temperature-controlled shipping to maintain chemical stability
• Document non-toxicity profile for customs health/safety review