Selective Anion Ion Exchange Resin

Description

Selective Anion Ion Exchange Resin is a macroporous polystyrene–divinylbenzene copolymer functionalized with quaternary ammonium groups, engineered for selective adsorption of specific anions such as nitrate, perchlorate, arsenate, or perfluorinated compounds (PFAS). Unlike standard strong base anion resins that exchange broadly across all anions, selective anion resins are optimized for high affinity toward targeted ions even in the presence of competing species like sulfate or chloride. This makes them highly effective for drinking water purification, environmental remediation, and specialty separation processes.

Applications

• Nitrate removal from drinking water and groundwater

• Perchlorate removal in environmental and industrial treatment

• Arsenic (as arsenate) removal in potable water treatment

• PFAS removal in groundwater and industrial effluents

• Selective separation of anions in chemical and pharmaceutical processes

• Industrial wastewater polishing where target ion removal is required

Key Features

• Engineered selectivity for target anions (nitrate, perchlorate, arsenate, PFAS, etc.)

• Macroporous matrix for excellent kinetics and physical stability

• High operating capacity and long service life

• Resistant to fouling from organics and suspended solids

• Delivers consistent performance under variable water chemistry

Technical Data

• Polymer matrix: Styrene–divinylbenzene copolymer

• Matrix structure: Macroporous

• Functional group: Quaternary ammonium (tailored for selectivity)

• Ionic form: Cl⁻ (standard supply)

• CAS number: 63453-90-7 (primary), 69011-19-4 (alternate)

• Appearance: White to pale yellow, opaque spherical beads

Typical Properties (representative values)

• Moisture retention: 45–60%

• Total exchange capacity: ≥ 1.0 eq/L (Cl⁻ form)

• Particle size range: 300–1200 μm

• Uniformity coefficient: ≤ 1.7

• Shipping weight: ~ 660–710 g/L

Operating Conditions

• Service flow rate: 5–30 BV/h

• Regeneration: NaCl or NaOH depending on target ion

• Operating pH range: 0–14

• Maximum operating temperature: 60 °C

• Minimum bed depth: 700 mm

Packaging Options

25L/PE bag, 5cu.ft/fiber drum, 200L/HDPE drum, 1000L/IBC tote, 1200kg/super sack, or as requested

Safety and Handling

• Store sealed, between 5–40 °C

• Keep moist to avoid shrinkage and bead cracking

• Handle with gloves and protective gear during use

• Spent resin with concentrated contaminants must be disposed of as hazardous waste

Equivalent Products (cross-reference)

• DuPont AmberLite™ IRA900 Cl

• Purolite A520E

• Lanxess Lewatit® S4528

• ResinTech SIR-100-HP