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

DOW SoftCAT SL-5 Ion Exchange Resin

DOW SoftCAT SL-5 is a high-capacity, strong-acid cation exchange resin from Dow’s SoftCAT series, designed for efficient sodium cycle softening and industrial water treatment. Featuring uniform spherical beads, low osmotic fragility, and excellent kinetic performance, it ensures reliable hardness removal and long service life in demanding applications.
  • dow softcat sl 5 ion exchange resin_5eab8ff8
  • dow softcat sl 5 ion exchange resin_5eab8ff8

Features Of DOW SoftCAT SL-5 Ion Exchange Resin

  1. Highly selective for calcium and magnesium ions, enabling efficient hardness removal in softening applications.

  2. Optimized spherical bead morphology ensures low pressure drop and uniform flow distribution in service vessels.

  3. Excellent physical and chemical stability across pH 1–14, supporting long service life under aggressive regeneration conditions.

  4. Low sodium leakage performance, meeting stringent requirements for boiler feedwater and process water pretreatment.

  5. Regenerable with low-concentration brine (NaCl), minimizing operational cost and waste stream volume.

Typical Applications Of DOW SoftCAT SL-5 Ion Exchange Resin

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

  2. Pretreatment for reverse osmosis (RO) and nanofiltration (NF) systems in municipal and industrial water plants.

  3. Food and beverage processing water conditioning where consistent low-hardness water is critical.

  4. Pharmaceutical purified water (PW) and water-for-injection (WFI) pretreatment systems.

  5. Laundry and textile dyeing operations requiring consistent soft water for improved process efficiency.

Specifications Of DOW SoftCAT SL-5 Ion Exchange Resin

Chemical TypeSodium-form strong acid cation exchange resin (sulfonated polystyrene-divinylbenzene matrix)
Product FormMoist, spherical beads
AppearanceOpaque amber to light brown beads
Functional GroupSulfonic acid (–SO₃H)
Ion FormSodium (Na⁺)
Moisture Content48–52% (as shipped)
Uniformity Coefficient≤ 1.6
Maximum Operating Temperature120 °C (248 °F)


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