Chlorendic Anhydride from China
Chlorendic anhydride (1,4,5,6,7,7-hexachloro-5-norbornene-2,3-dicarboxylic anhydride) is a halogenated bicyclic compound used in flame-retardant resins and coatings. Classified under HTS 2903.89.70.90 as a halogenated cyclanic derivative despite anhydride function, following Chapter 29 rule prioritizing latest numerical heading for multi-function compounds. Meets criteria for chemically defined cyclic halogenated hydrocarbons.
Duty Rate — China → United States
137.5%
Rate breakdown
9903.04.6096.3%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
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
• Provide technical data sheets confirming cyclanic structure over anhydride function for proper 2903 classification; check REACH/TSCA compliance for flame retardant chemicals; avoid misclassification as plasticizer by emphasizing intermediate use