Polymer-Grade Liquefied Butylene (C4 Olefin Mix)
Polymer-grade liquefied butylene is a high-purity C4 olefin mixture (85%+ total butylene isomers) for polyethylene co-monomer use, falling under HTS 2711.14.00.30. Specifications ensure low impurities for resin production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-polymerized to low molecular weight oligomers
Polymerized ethylene/butylene products, even low MW, classify as polymers in Chapter 39.
If propylene content exceeds 60% of total olefins
Mixtures where propylene predominates classify under propylene subheading.
If other hydrogen compounds if hydride forms imported
Butylene hydride derivatives classify under inorganic hydrogen compounds.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include polymer producer specifications confirming <100 ppm acetylenes/dienes for grade verification
• Use nitrogen-padded containers to prevent oxidation; test dissolved oxygen levels upon arrival
• Coordinate with CBP for advance ruling on exact isomer ratios if borderline with propylene content
Related Products under HTS 2711.14.00.30
Liquefied 1-Butene (Butylene-1)
Liquefied 1-butene is a petroleum-derived gaseous hydrocarbon with the formula C4H8, classified under HTS 2711.14.00.30 as butylene due to its butylene chemical structure. It is commonly used as a monomer in the production of polyethylene and other polymers.
Liquefied Isobutylene (2-Methylpropene)
Liquefied isobutylene, also known as 2-methylpropene, is a branched C4 olefin gaseous hydrocarbon liquefied under pressure, falling under HTS 2711.14.00.30 as butylene. It serves as a key intermediate in producing methacrylic acid, butyl rubber, and fuels.
Liquefied n-Butene (cis/trans-2-Butene Mix)
Liquefied n-butene, primarily a mixture of cis- and trans-2-butene isomers, is a straight-chain butylene gas classified under HTS 2711.14.00.30. It is utilized in the synthesis of maleic anhydride and as a fuel gas component.
Liquefied Raffinate-2 Butylene Stream
Liquefied raffinate-2 is a refinery stream containing 70-90% butylene (mixed isomers) after butadiene extraction, classified as butylene under HTS 2711.14.00.30. Primarily used in gasoline blending and alkylation processes.