Synthetic Isoprene-Butadiene Rubber (SIBR)
Butadiene rubber copolymerized with a small amount of isoprene, in granular primary form for tire treads. The product is predominantly butadiene rubber and meets the BR criteria under Chapter 40 Note 4.
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 isoprene content is significant enough to change the classification
Copolymers with significant isoprene may be classified under other synthetic rubber headings.
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 isoprene content is minor and the rubber retains BR's essential character
• Have composition data available for CBSA
• Use 4002.20.00 for customs clearance
Related Products under Tariff item 4002.20.00
BR Oil-Extended Rubber Bale
Butadiene rubber (BR) extended with mineral oil, presented in bale form. The mineral oil extender is permitted under Chapter 40 Note 5(A)(iii), and the product retains its essential character as a raw synthetic rubber in primary form.
Butadiene Rubber Powder
Butadiene rubber in fine powder form, used for rubber compounding and asphalt modification. Powder is a primary form under Chapter 40 Note 3(b), and the product is uncompounded, retaining its raw material character.
Cis-1,4-Polybutadiene Rubber Latex
Prevulcanized latex of cis-butadiene rubber for dipping and coating applications. The latex is a primary liquid form under Chapter 40 Note 3(a), and prevulcanization is permitted per Note 5(A)(i).
High Cis-Polybutadiene Rubber Bale
High-cis polybutadiene rubber in bale form, unvulcanized and uncompounded, for conveyor belts and footwear soles. The bale is a primary bulk form under Chapter 40 Note 3(b), and the product passes the elongation and recovery tests.
Lithium-Catalyzed Butadiene Rubber Crumb
Solution butadiene rubber crumbs produced via lithium catalysis, for wire insulation compounds. The crumb form is a primary bulk form under Chapter 40 Note 3(b), and the rubber is uncompounded.
Neodymium-Catalyzed Polybutadiene Rubber
Neodymium-catalyzed polybutadiene rubber with high microstructure, baled for golf balls and tires. The bale is a primary form, uncompounded, and meets the synthetic rubber definition of Chapter 40 Note 4.