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
125%
Rate breakdown
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)
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(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