Synthetic Rubber Monomer Isoprene (99%)
99% pure isoprene used exclusively as a building block for cis-polyisoprene synthetic rubber, with minimal impurities. It qualifies for HTS 2901.24.20.00 under Chapter 29 for pure acyclic hydrocarbons ≥95% purity, excluding mixtures or polymers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as polymerized polyisoprene
Completed synthetic rubber in primary forms moves to Chapter 40.
If a mixture of C5 acyclic diolefins
Isoprene in C5 cuts (piperylene mixes) classified as other unsaturated acyclic hydrocarbons.
If for bulk petroleum distillates
Chapter 27 covers heat/light cracked petroleum oils containing isoprene <95%.
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Import Tips & Compliance
• Label containers with UN number 1218 for hazardous material shipping; obtain EPA pre-manufacture notice if new use
• Avoid undervaluation by declaring industrial monomer value accurately
Related Products under HTS 2901.24.20.00
High-Purity Isoprene (99.5%)
Isoprene (2-methyl-1,3-butadiene) with a purity of 99.5% by weight, a chemically defined acyclic unsaturated hydrocarbon used primarily as a monomer in synthetic rubber production. It falls under HTS 2901.24.20.00 due to its high purity exceeding 95% and classification as pure isoprene per Chapter 29 notes for separate organic compounds. This excludes mixtures or impure forms covered elsewhere.
Polymerization-Grade Isoprene (98%)
98% pure isoprene specifically refined for synthetic rubber polymerization, meeting industrial standards for cis-1,4-polyisoprene production. Classified under HTS 2901.24.20.00 as a high-purity (≥95%) acyclic unsaturated hydrocarbon, distinct from lower-grade or mixed hydrocarbons.
99.9% Spectroscopic Grade Isoprene
Ultra-high purity 99.9% isoprene for spectroscopic and analytical applications, free of UV-absorbing impurities. Falls under HTS 2901.24.20.00 as chemically defined isoprene ≥95% pure, per Chapter 29 scope for separate organic compounds.
Industrial High-Purity Isoprene (97%)
97% pure isoprene for large-scale industrial polymerization, distilled to exceed 95% threshold with controlled cyclopentadiene content. Classified in HTS 2901.24.20.00 for pure isoprene meeting Chapter 29 purity criteria, not mixtures.
Battery Electrolyte Grade Isoprene Derivative (96%)
96% pure isoprene used in producing electrolyte additives for lithium-ion batteries, meeting high-purity specs. HTS 2901.24.20.00 applies as separate chemically defined acyclic hydrocarbon ≥95%, before further reaction.
Pharma Intermediate Isoprene (98.5%)
98.5% pure isoprene serving as intermediate for pharmaceutical terpenoid synthesis, USP-compliant purity. Under HTS 2901.24.20.00 as high-purity acyclic unsaturated hydrocarbon per Chapter 29 definitions.