Hydroxyl-Terminated Polyisoprene (HTPI)
Hydroxyl-terminated polyisoprene (HTPI) is a telechelic natural rubber derivative with hydroxyl end-groups, used as a reactive prepolymer in polyurethane elastomers and adhesives. It is supplied as a viscous liquid or solid in drums. As a modified natural polymer in primary forms, it falls under this tariff item.
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 polyisoprene is synthetic and not derived from natural rubber
Synthetic polyisoprene rubber falls under Chapter 40, not as a modified natural polymer.
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
• Classify HTPI under this item only if it is a derivative of natural rubber, not a fully synthetic polyisoprene
• Provide evidence of the natural rubber base material
• Check if the liquid form meets the definition of primary forms under Chapter 39 note 6
Related Products under Tariff item 3913.90.00
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