1,4-Naphthoquinone from China
1,4-Naphthoquinone is a yellow crystalline quinone compound with the formula C10H6O2, featuring two carbonyl groups conjugated in a benzene ring fused to a cyclohexene ring. It falls under HTS 2914.69.90.00 as an 'other' quinone with oxygen function, distinct from anthraquinone or coenzyme Q10. Used in organic synthesis and dye production.
Duty Rate — China → United States
112.5%
Rate breakdown
9903.04.6094.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (CoA) confirming chemical identity and purity as per Chapter 29 notes for separate chemically defined compounds
• Ensure SDS includes GHS hazard classification for quinones (toxic, irritant) to meet EPA and OSHA import requirements
• Avoid misclassification as dyes (Chapter 32) by documenting non-coloring primary use