Butene-1 Polymerization Grade
Butene-1 polymerization grade is high-purity 1-butene (>99.5%) specifically used as a comonomer in LLDPE production. As a separate chemically defined isomer of butene, it falls under tariff item 2901.23.00. The high purity ensures it meets the definition of a chemically defined compound under chapter note 1(a).
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is contaminated with butadiene
Butadiene is classified separately, and significant contamination would change the classification.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the purity level with a certificate of analysis, as impurities may affect classification
• Check if the product is regulated under Canada's Chemicals Management Plan
• Ensure the end-use (polymer production) is documented for customs purposes
Related Products under Tariff item 2901.23.00
1-Butene (But-1-ene)
1-Butene is a colorless, flammable acyclic unsaturated hydrocarbon with the formula CH2=CH-CH2-CH3. It is a separate chemically defined isomer of butene, which falls under tariff item 2901.23.00 as an unsaturated acyclic hydrocarbon. It serves as a key monomer in producing linear low-density polyethylene (LLDPE) and other polymers.
2-Butene Industrial Grade
Industrial 2-butene is a mixture of cis- and trans-2-butene isomers, both of which are acyclic unsaturated hydrocarbons with the formula CH3-CH=CH-CH3. As a mixture of isomers of the same organic compound, it qualifies under chapter note 1(b) and is classified under tariff item 2901.23.00. It is used in solvent production and alkylation processes.
cis-2-Butene
cis-2-Butene is the cis stereoisomer of 2-butene, an acyclic alkene with the formula CH3-CH=CH-CH3. As a separate chemically defined isomer of butene, it is classified under tariff item 2901.23.00. It is used in organic synthesis and as a research chemical.
Isobutene (2-Methylpropene)
Isobutene, or 2-methylpropene (CH2=C(CH3)2), is a branched butene isomer and an acyclic unsaturated hydrocarbon. It is a separate chemically defined compound that falls under tariff item 2901.23.00. Its primary use is in manufacturing methyl tert-butyl ether (MTBE) and polyisobutylene.
Isobutylene Research Grade
Isobutylene research grade is ultra-high purity isobutylene (>99.99%) used for laboratory and pharmaceutical synthesis. As a separate chemically defined isomer of butene, it is classified under tariff item 2901.23.00. The high purity ensures it meets the definition of a chemically defined compound under chapter note 1(a).
trans-2-Butene
trans-2-Butene is the trans stereoisomer of 2-butene (CH3-CH=CH-CH3), a separate chemically defined compound. It falls under tariff item 2901.23.00 as an acyclic unsaturated hydrocarbon. It is commonly used in petrochemical research and isomerization studies.