99% Pure Isoprene Monomer
High-purity isoprene (2-methyl-1,3-butadiene) used as a key monomer in synthetic rubber production. This acyclic unsaturated hydrocarbon falls under HTS 2901.24.50.00 as 'other' isoprene not specified elsewhere in the isoprene subheading. It meets Chapter 29 requirements for separate chemically defined organic compounds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If liquefied petroleum gas mixture containing isoprene
Mixed hydrocarbons including isoprene fall under Chapter 27 petroleum gases rather than pure Chapter 29 compounds.
If mixed as rubber accelerator preparation
Preparations containing isoprene as accelerator component classified by use in Chapter 38, not principal compound.
If technically specified as hydrocarbon mixture
Commercial mixtures with isoprene impurities classified as 'other acyclic unsaturated hydrocarbons'.
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Import Tips & Compliance
• Provide Certificate of Analysis (COA) confirming ≥99% purity and isoprene chemical identity per Chapter 29 definitions
• Ensure proper UN 2357 hazardous material declaration and DOT/IMDG shipping papers for flammable liquid
• Verify stabilizer content doesn't change classification; common pitfall is misclassifying stabilized vs pure forms
Related Products under HTS 2901.24.50.00
Research-Grade Isoprene (98% purity)
Laboratory reagent grade isoprene packaged in 100g glass ampoules for chemical synthesis research. Meets Chapter 29(a) definition of separate chemically defined compound with controlled impurities. Falls specifically under 2901.24.50.00 as 'other' isoprene form.
Isoprene with p-Menthadiene Impurities
Commercial isoprene containing controlled p-menthadiene impurities from thermal dimerization limits. Still classified as principal isoprene compound per Chapter 29 classification rules. 'Other' category accommodates typical commercial impurity profiles.
Stabilized Isoprene for Synthetic Rubber
Polymerization-grade isoprene containing TBHP stabilizer to prevent premature polymerization during storage and transport. Classified under HTS 2901.24.50.00 per Chapter 29 note (f) allowing stabilizers necessary for preservation. Remains chemically defined isoprene despite added stabilizer.
Industrial Isoprene from C5 Raffinate
Extracted isoprene from C5 petroleum cracker stream, 95-97% purity for polyisoprene rubber production. Qualifies as chemically defined organic compound per Chapter 29(a) despite raffinate origin. 'Other' form under HTS 2901.24.50.00 excludes high-purity monomer specs.