LEWATIT® K 6387

Summary

Product identification

Lewatit® K 6387 is a strongly basic, bead-shaped, monodisperse, gelular type-I anion exchange resin based on a styrene-divinylbenzene copolymer. It is specially suitable for:

• Lifetime extension of acid baths (acid retardation process)
• Chromatographic separation and ion exclusion processes
• Demineralization (in hydroxide form) of water and aqueous solutions

Physical and Chemical Properties

• Ionic form as shipped: Cl⁻
• Functional group: quaternary amine, type I
• Matrix: crosslinked polystyrene
• Structure: gel type beads
• Appearance: yellow, translucent
• Uniformity Coefficient: max. 1.1
• Mean bead size: 0.3 mm (± 0.05)
• Bulk density: 700 g/l (± 5 %)
• Density: approx. 1.10 g/ml
• Water retention: 48 - 55 wt. %
• Total capacity: min. 1.5 eq/l
• Volume change (Cl⁻ --> OH⁻): max. 25 vol. %
• Stability (pH-range): 0 - 14
• Storability (max years): 2
• Storability temperature range: -20 - 70 °C

Recommended Operating Conditions

• Operating temperature:
  • OH⁻ form: max. 70 °C
  • Cl⁻ form: max. 90 °C
• Operating pH-range: 0 - 12
• Bed depth (min.): 800 mm
• Specific pressure drop (15 °C): approx. 2.8 kPa·h/m²
• Pressure drop (max.): 200 kPa
• Linear velocity (operation):
  • Water: 5 - 40 m/h
  • Sugar: 1 - 5 m/h
• Linear velocity (backwash, 20 °C): approx. 7 - 9 m/h
• Bed expansion (20 °C, per m/h): approx. 25 vol. %
• Freeboard (backwash, external / internal): 80 - 100 vol. %

Regeneration

• Regenerant: NaOH or NaCl + NaOH
• Regeneration level (approx. g/l):
  • NaOH: 50 - 80
  • NaCl + NaOH: 20
• Concentration (approx. wt. %):
  • NaOH: 4 - 10 %
  • NaCl + NaOH: 1 - 2 %
• Linear velocity (regeneration): approx. 5 m/h
• Linear velocity (rinsing): approx. 5 m/h
• Rinse water requirement (slow / fast): approx. 4 BV

Additional Information & Regulations

• Safety precautions: Strong oxidants (e.g., nitric acid) can cause violent reactions. Observe the safety data sheet.
• Disposal: Dispose of according to European waste nomenclature.
• Storage: Store above freezing point, under roof, dry, out of direct sunlight. If frozen, thaw gradually at ambient temperature.

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