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Highly selective strong-base anion exchange resin with Type I functionalization.
Optimized for nitrate and perchlorate removal from drinking water and process streams.
Excellent chemical stability in chloride form, resistant to oxidation and osmotic shock.
Uniform spherical bead morphology ensures low pressure drop and consistent hydraulic performance.
Regenerable with sodium chloride brine, enabling cost-effective cyclic operation.
Drinking water treatment for selective removal of nitrate (NO₃⁻) and perchlorate (ClO₄⁻).
Pharmaceutical process water polishing where low total organic carbon (TOC) leaching is critical.
Electronics-grade ultrapure water systems requiring high-purity anion control.
Food and beverage industry wastewater pretreatment prior to biological or membrane processes.
Nuclear power plant coolant purification for sulfate and borate ion management.
| Chemical Type | Strong-base anion exchange resin, Type I quaternary ammonium |
| Product Form | Moist, spherical beads in chloride form |
| Appearance | Amber-colored, translucent gel-type beads |
| Functional Group | –N⁺(CH₃)₃ Cl⁻ |
| Moisture Content | 45–50% (as shipped) |
| Ion Exchange Capacity (min) | 1.1 eq/L (Cl⁻ form) |
| Particle Size Range | 0.3–1.2 mm (≥95% retained on 16 mesh, passes 50 mesh) |
| Uniformity Coefficient (max) | 1.6 |
Q1: What is the primary functional group and ionic form of AMBERLITE FPA 98 Cl resin?
A: AMBERLITE FPA 98 Cl is a strongly basic anion exchange resin with quaternary ammonium functional groups, supplied in the chloride (Cl⁻) ionic form. It is based on a styrene-divinylbenzene matrix with Type I functionality, offering high chemical stability and selectivity for anionic species in aqueous systems.
Q2: How does AMBERLITE FPA 98 Cl differ from other strong base anion resins, such as Type II or acrylic-based variants?
A: Unlike Type II resins (e.g., those with dimethyl ethanolamine groups), FPA 98 Cl features a Type I quaternary ammonium structure, providing superior stability in oxidizing environments and higher affinity for weakly ionized acids like silicic acid and carbonic acid. Compared to acrylic matrices, its styrenic backbone offers enhanced mechanical strength and resistance to organic fouling in demanding industrial water treatment applications.
Q3: Is AMBERLITE FPA 98 Cl suitable for deionization (DI) polishing in ultrapure water systems?
A: Yes — it is commonly used in mixed-bed configurations with strong acid cation resins for final polishing stages in ultrapure water production. Its low total organic carbon (TOC) release, high regeneration efficiency, and consistent kinetics support stringent conductivity and silica removal requirements typical of semiconductor-grade and pharmaceutical water systems.
Q4: What are key regeneration considerations for AMBERLITE FPA 98 Cl?
A: Regeneration is typically performed with sodium hydroxide (NaOH) solution. Optimal performance requires adequate contact time, controlled flow rates, and proper rinsing to minimize residual alkali. The resin exhibits good regenerability across multiple cycles, though performance may decline in the presence of organic foulants or high levels of sulfate/borate, which bind strongly and require extended or modified regeneration protocols.
Q5: Can AMBERLITE FPA 98 Cl be used in food or pharmaceutical processing applications?
A: This resin is designed for industrial water purification and is not pre-certified for direct food contact or pharmaceutical manufacturing under regulatory frameworks such as USP or EP. For such uses, customers must validate suitability per their internal quality systems and applicable regional requirements, including thorough extractables/leachables assessment and process validation.
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E-mail: wangxingqiang@ericwchem.com
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