Ultra-High Purity Butane (99.999%) from Japan
N-butane (C4H10) at 99.999% purity for semiconductor manufacturing and calibration gas standards. Pure saturated acyclic hydrocarbon under HTS 2901.10.10.00 per Chapter 29 definitions. Supplied in specialty gas cylinders.
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
• Include analytical certificate showing >99% purity; use proper UN1011 labeling; declare research/industrial use to prevent fuel classification