Butyl Rubber Latex Dispersion
A liquid dispersion of butyl rubber (IIR) in water, used for dipping and coating applications in manufacturing gloves and balloons. Classified under HTS 4002.39.00.00 as synthetic rubber in primary form (latex), meeting Chapter 40 note definitions for prevulcanized latex without prohibited compounding agents.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing brominated butyl rubber (BIIR) additives
BIIR variants fall under 'halo-isobutene-isoprene' subheading if halogenated, shifting from plain IIR.
If compounded with vulcanizing agents or pigments
Chapter Note 5(a) excludes mixtures with prohibited additives from 4002, moving to compounded rubber.
If chemically modified beyond vulcanizable synthetic rubber definition
Fails Chapter Note 2 vulcanization/elongation test, classifying as other plastics instead of rubber.
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Import Tips & Compliance
• Verify no vulcanizing agents or fillers added beyond permitted emulsifiers to retain primary form status per Chapter Note 5
• Provide chemical composition certificates confirming IIR content and dispersion form for CBP review
• Avoid common pitfall of classifying prevulcanized latex as compounded if it exceeds note allowances
Related Products under HTS 4002.39.00.00
CIIR Powder Form
Micronized chlorobutyl rubber powder for compounding in adhesives, classified as primary form powder under HTS 4002.39.00.00. Meets Chapter 40 definitions for uncompounded synthetic rubber granules/powders.
IIR Rubber Lump Blocks
Irregular lump blocks of isobutene-isoprene rubber for further processing into sheets, in primary bulk form. HTS 4002.39.00.00 as 'other' IIR, compliant with primary forms note excluding worked shapes.
Exxon Butyl 268 Rubber Pellets
Commercial ExxonMobil Butyl 268 grade IIR in pellet form for injection molding compounds. HTS 4002.39.00.00 for primary pellets of butyl rubber, free of disallowed additives.
Lanxess Bromobutyl BB2030
Lanxess BB2030 bromobutyl rubber in crumb form for tire curing bladders. Primary form under HTS 4002.39.00.00 as halo-isobutene-isoprene 'other'.
Chlorobutyl Rubber Scrap-Free Crumbs
Processed CIIR crumbs from calendaring, usable as primary input without waste status. HTS 4002.39.00.00 per note distinguishing bulk forms from scrap.
Butyl VM-6131 Masterbatch Pellets
Vista VM-6131 butyl pellets with minimal permitted stabilizers for pharma applications. Still primary under HTS 4002.39.00.00.