BIIR Rubber Bale
Brominated isobutene-isoprene rubber (BIIR) compressed into rectangular bales for storage and transport, used in pharmaceutical stoppers. The bales are in primary form (blocks of regular geometric shape) and uncompounded, qualifying under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the bales are non-halogenated butyl rubber
Non-halogenated IIR is classified separately from halo-isobutene-isoprene rubber.
If the bales contain plasticizers or extenders
Such additives would remove the product from heading 40.02.
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
• Verify the bales are simply cut to rectangular shape and not further worked, per Chapter 40 Note 9
• Include the grade and halogenation details in the commercial invoice to avoid delays
• Consult the CBSA tariff classification advice if the bales have any surface treatment
Related Products under Tariff item 4002.39.00
BIIR Irregular Lumps
Irregular lumps of brominated isobutene-isoprene rubber (BIIR) in primary form, produced directly from polymerization. These lumps are uncompounded and retain the essential character of raw synthetic rubber, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
Butyl Rubber Latex Dispersion
A liquid dispersion of butyl rubber (IIR) in water, used for dipping and coating applications in manufacturing gloves and balloons. As a latex in primary form, it is uncompounded and falls under tariff item 4002.39.00 as 'other' isobutene-isoprene rubber.
Butyl Rubber Solution Paste
Viscous paste solution of butyl rubber in organic solvent for cement applications, in primary form per Chapter 40 Note 3(a). The paste is uncompounded and classified under tariff item 4002.39.00 as 'other' synthetic rubber dispersion.
Butyl VM-6131 Masterbatch Pellets
Butyl VM-6131 masterbatch pellets with minimal permitted stabilizers for pharmaceutical applications. These pellets are in primary form and uncompounded, falling under tariff item 4002.39.00 as 'other' isobutene-isoprene rubber.
Chlorobutyl Rubber Scrap-Free Crumbs
Processed chlorobutyl rubber (CIIR) crumbs from calendaring, usable as a primary input without waste status. These crumbs are in bulk form and uncompounded, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
CIIR Bulk Powder
Bulk chloroisobutene-isoprene rubber (CIIR) powder for dry blending. This powder is in primary form and uncompounded, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.