Fluorosulfonated Polymer Powder (for Membranes)
Fluorinated polymer powder with sulfonyl groups for ion-exchange membranes, classified as other fluoropolymers in HTS 3904.69.5000 primary forms. Chemical modification keeps it in 'other' per subheading note (a)(3).
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | +35.0% | 41.5% |
| 🇲🇽Mexico | 6.5% | +10.0% | 16.5% |
| 🇨🇦Canada | 6.5% | +10.0% | 16.5% |
| 🇩🇪Germany | 6.5% | +10.0% | 16.5% |
| 🇯🇵Japan | 6.5% | +10.0% | 16.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in aqueous dispersion form
Polymer dispersions/preparations fall under chemical mixtures in 3824.
If functional groups dominate chemically
Heavy functionalization may classify as esters of inorganic acids.
If unmodified fluoroelastomer base
Unmodified versions have specific fluoroelastomer subheadings.
Not sure which classification is right?
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Import Tips & Compliance
• Document modification process to justify 'other' classification vs unmodified base polymer
• Declare intended end-use as industrial resin, not fabricated article
• Ensure powder form; dispersions classify under 3824
Related Products under HTS 3904.69.50.00
Polyvinylidene Fluoride Resin (PVDF)
PVDF is a fluoropolymer derived from vinylidene fluoride monomer, classified under HTS 3904.69.5000 as it falls within 'other fluoropolymers' in primary forms like pellets or powder. It meets the subheading note requiring the named monomer to contribute 95% or more by weight.
Chlorinated Fluoropolymer Concentrate Pellets
Pellets of chlorinated olefin fluoropolymers for extrusion, HTS 3904.69.5000 as other in primary forms, compliant with 95% polymer content.
Perfluoroalkoxy Resin (PFA)
PFA fluoropolymer resin from perfluoroalkyl vinyl ethers and TFE, classified HTS 3904.69.5000 other fluoropolymers primary forms.
Fluorinated Ethylene Propylene Special Copolymer
Specialty FEP variant copolymer pellets, HTS 3904.69.5000 other fluoropolymers.
Polychlorotrifluoroethylene Pellets (PCTFE)
PCTFE resin in pellet form is a fluoropolymer from chlorotrifluoroethylene, fitting HTS 3904.69.5000 as 'other fluoropolymers' in primary forms. Classification follows subheading rules for polymers where the monomer exceeds 95% by weight.
Ethylene Chlorotrifluoroethylene Copolymer (ECTFE)
ECTFE is a copolymer fluoropolymer primarily from chlorotrifluoroethylene and ethylene, classified in HTS 3904.69.5000 as other fluoropolymers in primary forms. It qualifies per notes if comonomer units meet the 95% contribution threshold.