Polymerization-Grade Butadiene (PG Butadiene)
High-purity buta-1,3-diene (>99.7%) specifically refined for synthetic rubber polymerization, falling under HTS 2901.24.10.00 as a pure acyclic unsaturated hydrocarbon. Its conjugated diene structure makes it ideal for producing styrene-butadiene rubber (SBR).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If isoprene instead of butadiene
Same subheading but separate statistical breakout for isoprene; molecular structure determines specific item.
If diluted with stabilizers beyond transport limits
Chapter note (f) allows stabilizers only if necessary for preservation; excess additives shift to mixtures in 3824.
If imported as light oil fraction
Crude C4 streams from petroleum refining containing butadiene classify under Chapter 27 petroleum oils.
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Import Tips & Compliance
• Provide GC-MS analysis confirming <10 ppm moisture and C4 impurities to maintain pure compound status
• Use refrigerated tankers maintaining -4°C to prevent polymerization during ocean transit
• Declare as UN1010; obtain advance CBP approval for bulk chemical imports exceeding 1000 kg
Related Products under HTS 2901.24.10.00
Buta-1,3-diene (1,3-Butadiene)
Buta-1,3-diene is a colorless, flammable gas with the molecular formula C4H6, classified as an acyclic unsaturated hydrocarbon under HTS 2901.24.10.00 due to its conjugated double bonds and four-carbon chain structure. It serves as the primary monomer for synthetic rubber production.
Refrigerated Liquid Buta-1,3-diene
Liquefied buta-1,3-diene stored at -4°C under pressure, classified under HTS 2901.24.10.00 per Chapter 29 note (e) as solvent-free pure compound in transport form. Used primarily in tire manufacturing as synthetic rubber feedstock.
99.9% Pure Butadiene Monomer
Ultra-high purity buta-1,3-diene monomer (>99.9%) for specialty polymer applications, classified as chemically defined acyclic hydrocarbon under HTS 2901.24.10.00. Meets Chapter 29 note (a) strict purity standards.
Extracted C4 Butadiene Fraction
Buta-1,3-diene recovered via extractive distillation from C4 steam cracker raffinate, purified to chemical compound standards under HTS 2901.24.10.00. Primary use in nitrile rubber production.
Synthetic Rubber Feedstock Butadiene
Industrial-grade buta-1,3-diene specifically for polybutadiene rubber (PBR) production, classified under HTS 2901.24.10.00 as pure unsaturated acyclic hydrocarbon. Features low acetylene content (<20 ppm).