Liquid Polyisoprene Rubber (LIR) from Japan
Liquid polyisoprene rubber (LIR) is a low molecular weight liquid derivative of natural cis-1,4-polyisoprene, used as a reactive plasticizer in tires and sealants. It is supplied in primary liquid form in drums. As a modified natural polymer, it is classified under this tariff item.
Duty Rate — Japan → Canada
PGA flags (1)Show detailsHide detailsCFIAAll ProgramsMay be required
- CFIA
All Programs · May be required · on some HTS numbers under this code
May require CFIA All Programs depending on the full 10-digit classification number (only some numbers under this code are listed). Matching criteria: Within Range 3913900010–3913900090. Logic: MATCH IF (Valid HS Code).
CBSA Single Window matching criteria, unknown
Import Tips
• Document that the LIR is derived from natural rubber, not synthetic polyisoprene, to support classification
• Ensure the liquid form qualifies as primary forms under Chapter 39
• Verify the product is not excluded as a lubricating preparation under heading 27.10 or 34.03