Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Lanxes-s LEWATIT S 5221 Ion Exchange Resin

Lanxes-s LEWATIT S 5221 is a high-capacity, strongly acidic cation exchange resin in sodium form, featuring uniform spherical beads and exceptional chemical/thermal stability. Ideal for industrial water softening, demineralization, and process stream purification, it delivers consistent performance, rapid kinetics, and low pressure drop across diverse pH and temperature ranges.
  • lanxes s lewatit s 5221 ion exchange resin_1456b8b5
  • lanxes s lewatit s 5221 ion exchange resin_1456b8b5

Features Of Lanxes-s LEWATIT S 5221 Ion Exchange Resin

  1. Highly selective for divalent cations such as Ca²⁺ and Mg²⁺ in softening applications.

  2. Optimized spherical bead morphology ensures low pressure drop and excellent hydraulic stability.

  3. Superior chemical and osmotic stability across wide pH range (1–14) and repeated regeneration cycles.

  4. Low soluble organic carbon (SOC) leaching, meeting stringent requirements for ultrapure water systems.

  5. Consistent particle size distribution (0.3–1.2 mm) enabling uniform flow dynamics and predictable performance.

Typical Applications Of Lanxes-s LEWATIT S 5221 Ion Exchange Resin

  1. Industrial boiler feedwater softening to prevent scale formation and extend equipment life.

  2. Pretreatment for reverse osmosis (RO) and electrodeionization (EDI) systems in power and semiconductor industries.

  3. Removal of hardness ions from process water in pharmaceutical and biotechnology manufacturing.

  4. Recovery and purification of metal-bearing effluents in electroplating and surface finishing operations.

  5. Production of high-purity rinse water for electronics cleaning and photovoltaic wafer processing.

Specifications Of Lanxes-s LEWATIT S 5221 Ion Exchange Resin

Chemical TypeStrong acid cation exchange resin (sulfonated polystyrene-divinylbenzene matrix)
Product FormMoist, sodium-form beads
AppearanceOpaque, light amber spherical beads
Primary ApplicationsWater softening, demineralization pretreatment, selective hardness removal
Functional GroupSulfonic acid (–SO₃H)
Ideal Operating Temperature5–50 °C
Maximum Operating Temperature100 °C (short-term)
RegenerantSodium chloride (NaCl) or hydrogen chloride (HCl)


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