LEWATIT® S 6368

Summary

Product identification

Lewatit® S 6368 is a Food grade, strongly basic macroporous anion exchange resin (type I) with beads of uniform size (monodisperse) based on polystyrene.

Applications:

• In the hydroxide form: removal of acid and simultaneous decolorisation of solutions of organic substances (e.g., sugar, gelatine, glycerine, grape must, whey, fruit concentrates).
• In the chloride form: decolorisation of sugar syrup (beet or cane), glycerine, grape must, fruit juices.

General Description:

• Ionic form as shipped: chloride
• Functional group: quaternary amine, type I
• Matrix: crosslinked polystyrene
• Structure: macroporous
• Appearance: beige, opaque

Physical and Chemical Properties

• Uniformity Coefficient: max. 1.1
• Mean bead size: 0.6 (± 0.06) mm
• Bulk density: 690 (± 5 %) g/l
• Density: approx. 1.10 g/ml
• Water retention: 58 - 64 wt. %
• Total capacity: min. 1.1 eq/l
• Volume change (OH⁻ → Cl⁻ / SO₄²⁻): max. -22 %
• Stability (pH-range): 0 - 14
• Storability (product): max. 2 years
• Storability (temperature range): -20 - 40 °C

Specification values are subjected to continuous monitoring.

Recommended Operating Conditions

• Operating temperature: max. 70 °C (OH⁻) / 85 °C (Cl⁻)
• Operating pH-range: 0 - 12
• Bed depth: min. 800 mm
• Specific pressure drop (at viscosity 1 mPa·s): approx. 0.75 kPa·h/m²
• Pressure drop: max. 300 kPa
• Linear velocity (operation): Not specified
• Linear velocity (backwash, 20 °C): approx. 4 - 5 m/h
• Freeboard (backwash, extern/intern): 80 - 100 vol. %

Regenerant (NaOH / NaCl + NaOH):

• Counter current regeneration level: approx. 60 - 80 g/l / 200 / 20 g/l
• Counter current regeneration concentration: 4 wt. % / 10 / 1 wt. %
• Co current regeneration level: approx. 60 - 80 g/l / 200 / 20 g/l
• Co current regeneration concentration: approx. 4 wt. % / 10 / 1 wt. %
• Linear velocity (regeneration): approx. 5 m/h
• Linear velocity (rinsing): approx. 5 m/h
• Rinse water requirement (slow/fast): approx. 4 BV

The recommended operating conditions refer to the use of the product under normal operating conditions. Additional data are needed to calculate resin volumes; refer to Technical Information Sheets.

Additional Information & Regulations

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

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

Official datasheet (PDF)

Lenntech datasheet mirror