α-HBCD Isomer (Alpha-Hexabromocyclododecane) from China
The alpha stereoisomer of 1,3,5,7,9,11-hexabromocyclododecane is a specific chemically defined organic compound under HTS 2903.89.40.00. As a halogenated derivative of cyclododecane, it qualifies per chapter notes for separate isomers of organic compounds. Used primarily as a research chemical and flame retardant intermediate.
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
• Provide HPLC chromatograms showing ≥90% alpha-isomer purity to distinguish from technical mixtures
• Include safety data sheets noting low bioaccumulation factor specific to alpha-HBCD for regulatory review
• Ensure labeling specifies stereochemistry as chapter notes cover isomer mixtures but purity affects end-use declarations