2,2,3,3-Tetrachlorocyclobutanone from China
Despite ketone functionality, 2,2,3,3-tetrachlorocyclobutanone classifies primarily by halogenation under HTS 2903.89.70. The cyclobutane ring with geminal dichlorides defines it as halogenated cyclanic derivative. Chapter notes prioritize halogenation over minor oxygen functions.
Duty Rate — China → United States
41.2%
Rate breakdown
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
• Include carbonyl stretch IR data to document oxygen function without reclassification
• Store below 0°C to prevent ring expansion rearrangement
• Label as Eye Irritant Category 2A per GHS standards