Cyclized Rubber (Alkylated Chlorosulfonated Rubber) from United States
Cyclized rubber is produced by treating natural rubber with acids to create cyclic structures, resulting in a harder derivative used in paints and varnishes. It is supplied in primary flake or powder form. As a chemically modified natural polymer, it falls under this tariff item for natural polymers not elsewhere specified.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the cyclized rubber is chemically modified natural rubber, not a synthetic polymer, to justify classification under this item
• Provide technical data sheets showing the modification process
• Check if the product is excluded by Chapter 40 notes on synthetic rubber