Hexachlorobutadiene from Mexico
Hexachlorobutadiene (C4Cl6) is a fully chlorinated saturated acyclic hydrocarbon derivative of butadiene. Despite its name suggesting unsaturation, commercial forms are saturated perchlorobutanes under HTS 2903.19.60. Used as heat transfer fluid and rubber extender.
Duty Rate — Mexico → United States
15.5%
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
• Confirm saturation status via hydrogenation analysis if unsaturated impurities present
• Include Stockholm Convention documentation for persistent organic pollutant status
• Use UN 2279 packaging for toxic liquid with high density (1.55 g/mL)