LEWATIT® S 4468

Summary

Product identification

Lewatit® S 4468 is a food grade, macroporous, monodisperse, medium basic anion exchange resin based on a styrene-divinylbenzene copolymer, featuring tertiary and quaternary amino groups. It is supplied in its free base/Cl- form.

Operating limits

• Stability pH range: 0-14
• Stability temperature range: 1-70 °C
• Operating temperature (max): 70 °C
• Operating pH range during exhaustion: 0-8
• Max. pressure loss during operation: 300 kPa

Feed water

The resin is suitable for the removal of acid and simultaneous decolorization of solutions of organic products such as glucose, fructose, dextrose, and other sugars.

Product water

The resin is suitable for potable water treatment.

Electrical

Not applicable.

Mechanical / hydraulic

• Common Description:
  • Delivery form: Free base/Cl-
  • Functional group: Tertiary amine/quaternary ammonium
  • Matrix: Styrenic
  • Structure: Macroporous
  • Appearance: Beige, opaque
• Specified Data:
  • Uniformity coefficient (max): 1.1
  • Mean bead size (d₅₀): 0.50-0.60 mm
  • Total capacity (delivery form) (min): 1.6 eq/L
• Typical Physical and Chemical Properties:
  • Bulk density for shipment (+/- 5%): 620 g/L
  • Density (approx.): 1.1 g/mL
  • Water retention (delivery form) (approx. weight %): 52-57 %
  • Volume change (free base - Cl-) (max. approx.): 30 %
  • Volume change (during exhaustion) (typical approx.): 24 %
• Operation:
  • Bed depth for single column (min): 800 mm
  • Back wash bed expansion per m/h (20°C): 21 %
  • Specific pressure loss (15°C): 1 kPa*h/m²
  • Specific flow rate (max): 5 BV/h
  • Freeboard during backwash (min. vol. %): 80-100 %
• Regeneration:
  • NaOH regeneration concentration (approx. wt. %): 2-4 %
  • NaOH regeneration quantity co-current (min): 80 g/L resin
  • NaOH regeneration quantity counter-current (min): 60 g/L resin
  • Regeneration contact time (min): 30 minutes
  • Slow rinse at regeneration flow rate (min): 2 BV
  • Fast rinse at service flow rate (min): 4 BV

Storage and Handling

• Storage Temperature Range: -20 - +40 °C
• Storage Time (after delivery) (max): 2 years
• Storage Conditions: Store at temperatures above the freezing point of water, under roof in dry conditions without exposure to direct sunlight.
• Frozen Resin: If resin becomes frozen, allow it to thaw gradually at ambient temperature before handling or use. Do not accelerate thawing.
• Safety: Observe the safety data sheet. Strong oxidants can cause violent reactions.
• Disposal: Dispose according to European waste nomenclature.
• Packaging Stability: Limited to 24 months under recommended storage conditions. Check packaging condition regularly if used beyond this period.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror