Norbornane Diazo Ester from China
1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-,(octahydro-4,7-methano-1H-indene-2,5-diyl) bis-(methylene) ester, a diazo compound featuring norbornane structure used in specialty polymer crosslinking applications. This exact chemical is enumerated in HTS 2927.00.18.00 under diazo compounds of Chapter 29.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Import with full synthetic pathway documentation proving structure matches tariff nomenclature exactly
• Hazardous material shipping requirements apply (ORM-D or proper UN number); verify DG compliance
• Avoid classification error as general organo-sulfur under 2930—diazo function takes precedence per Chapter 29 notes