β-HBCD Isomer (Beta-Hexabromocyclododecane) from Mexico
Beta-1,3,5,7,9,11-hexabromocyclododecane is the gamma-stable isomer classified specifically under HTS 2903.89.40.00 as a halogenated cyclanic hydrocarbon derivative. This chemically pure form meets chapter 29 note (b) for separate isomers. Primarily used in analytical standards and specialized flame retardant formulations.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit NMR spectra confirming beta-isomer configuration to avoid misclassification with technical grade
• Declare exact purity levels; impurities >2% may require mixture classification under Chapter 38
• Monitor EU REACH Annex XVII restrictions; beta-HBCD has specific concentration limits for textile applications