Dowex 50WX8 Cation Exchange Resin
Dowex 50WX8 is a high-capacity strong acid cation resin from polystyrene matrix, ideal for nuclear and pharmaceutical purification. It qualifies under HTS 3914.00.60.00 for ion-exchangers based on heading 3903 polymers in primary bead form, as 'Other'.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If based on ethylene copolymers if vinyl content predominates
Subheading note (a)(4) requires classification by weight-predominant monomer; ethylene-based ion-exchangers go to 3901.
If sold as finished beads in retail consumer packs
Other articles of plastics in consumer packaging may fall under 3926, excluding primary forms or household exclusions.
If chemically modified beyond ion-exchange for lab reagents
Waste or residual ion-exchange materials classify under 3825, not primary polymers.
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Import Tips & Compliance
• Include cross-section analysis confirming bead primary form (not sheets/films); certify no plasticizers exceeding definitions
• Pitfall: bulk packaging over 38.1x45.7cm may lose Free (B) under 3921 note if misdeclared
• Track country-of-origin for polymer synthesis
Related Products under HTS 3914.00.60.00
Purolite C100 Cation Exchange Resin
Purolite C100 is a strong acid cation exchange resin based on polystyrene-divinylbenzene copolymer (from heading 3903), in primary bead form, used for water softening by exchanging calcium and magnesium ions. It falls under HTS 3914.00.60.00 as an ion-exchanger derived from polymers of headings 3901-3913, classified as 'Other' since it's not specifically named elsewhere. The polymer meets the 95% monomer content rule for polystyrene.
Amberlite IR-120 Strong Acid Cation Resin
Amberlite IR-120 is a gel-type strong acid cation exchange resin based on styrene-divinylbenzene copolymer, used in demineralization processes. Classified under 3914.00.60.00 as 'Other' ion-exchangers in primary forms from polymers like those in 3903. It complies with subheading notes requiring predominant monomer content.
Purolite A400 Anion Exchange Resin
Purolite A400 is a strong base anion exchange resin on polystyrene skeleton for dealkalization and organics removal. Under 3914.00.60.00 as 'Other' ion-exchanger from 3903 polymers, meeting 95% styrene-divinylbenzene content per notes.
Amberjet 4400 Uniform Particle Anion Resin
Amberjet 4400 offers uniform bead size for strong base anion exchange in condensate polishing, derived from styrene copolymer. Classifies in 3914.00.60.00 as other ion-exchangers in primary forms from 3903 polymers.
Lewatit MonoPlus S100 Cation Resin
Lewatit MonoPlus S100 is a monodisperse strong acid cation exchanger for ultra-pure water, based on acrylic-divinylbenzene (3906 polymer). HTS 3914.00.60.00 covers it as 'Other' ion-exchanger in primary form.
Diaion SK1BH Cation Exchange Resin
Diaion SK1BH gel strong acid cation resin from styrene-DVB for deionization, classified under 3914.00.60.00 as other polymer-based ion-exchanger.