Triethanolamine Hydroxyhydroquinone from China
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 — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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