Isopentane 99% Purity from Canada
Isopentane (2-methylbutane), a branched saturated acyclic hydrocarbon used as a blowing agent in polystyrene foam production. Classified under HTS 2901.10.30.00 as a chemically defined isomer per Chapter 29 note (a). Differs from n-pentane in its branched structure.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide GC-MS analysis confirming 99% isopentane content to prevent disputes; comply with EPA foaming agent regulations
• Pitfall: improper storage leading to vapor pressure issues in shipping