2901.10.10.00/Ultra-High Purity Butane (99.999%)/Japan

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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Include analytical certificate showing >99% purity; use proper UN1011 labeling; declare research/industrial use to prevent fuel classification