Isopentane Blowing Agent from Japan
Technical-grade isopentane used industrially as a physical blowing agent for expandable polystyrene (EPS) foam insulation. As a pure saturated acyclic hydrocarbon, it fits HTS 2901.10.30.00 under Chapter 29 definitions. Provides low boiling point for foam expansion.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify compliance with TSCA for chemical import notification; label as extremely flammable
• Pitfall: incorrect boiling point specs leading to misclassification