High-Purity β-HBCD Isomer from China
Beta-isomer enriched hexabromocyclododecane (>90% purity) for specialty polymer flame retardant applications. HTS 2903.89.70.10 applies as 'other HBCDs' under Chapter 29 note (a) for chemically defined compounds, with stereoisomer specificity. The brominated cyclododecane qualifies as halogenated cyclanic hydrocarbon derivative.
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 chiral HPLC analysis certificates proving β-isomer enrichment for customs verification
• Monitor EU POPs regulation; β-isomer may have transitional approvals unlike α
• Declare exact bromination degree (6 Br atoms) to confirm cyclododecane structure