Ultra-High Purity Butane (99.999%)
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If commercial fuel-grade liquefied butane
Butane sold as heating/LPG fuel classified as petroleum gas in Chapter 27.
If diluted with other hydrocarbons >10%
Mixtures not meeting pure compound criteria fall under prepared chemical mixtures.
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Import Tips & Compliance
• Include analytical certificate showing >99% purity; use proper UN1011 labeling; declare research/industrial use to prevent fuel classification
Related Products under HTS 2901.10.10.00
Research Grade Ethane Gas
High-purity ethane (C2H6) gas supplied in compressed cylinders for laboratory research and chemical synthesis. Classified under HTS 2901.10.10.00 as a separate chemically defined acyclic saturated hydrocarbon. Meets Chapter 29 note (a) for pure organic compounds.
Ethane Calibration Standard 10 ppm
Ethane gas mixture at 10 ppm in nitrogen balance for gas chromatography calibration. Principal component ethane qualifies under HTS 2901.10.10.00 as chemically defined compound per Chapter 29 note (a). NIST-traceable certified reference material.
Iso-Butane Aerosol Propellant Grade
Isobutane (2-methylpropane) >99.5% purity for aerosol packaging propellants. Pure saturated acyclic hydrocarbon classified HTS 2901.10.10.00 under Chapter 29 for separate organic compounds. Supplied in bulk pressure containers.
Liquid Ethane for Petrochemical Feed
Refrigerated liquid ethane (C2H6) for ethylene cracker feedstock in plastics production. Meets HTS 2901.10.10.00 as pure saturated acyclic hydrocarbon per Chapter 29 note (a). Transported in ISO tank containers.
N-Butane Laboratory Solvent
N-butane gas 99.9% pure used as extraction solvent in analytical chemistry labs. Saturated acyclic hydrocarbon under HTS 2901.10.10.00 per Chapter 29 definitions. Supplied in lecture bottle cylinders.
Ethane-Deuterated Isotope Standard
Fully deuterated ethane (C2D6) for NMR spectroscopy and mass spectrometry standards. Chemically defined isotopically substituted compound under HTS 2901.10.10.00. Specialty gas for research institutions.