LEWATIT® MDS 1368 Na / 350

Summary

Product identification

Lewatit® MDS 1368 Na 350 is a strongly acidic, gelular cation exchange resin based on a styrene/divinylbenzene-copolymer. It is a bead-shaped, monodisperse resin with a fine bead size, suitable for chromatographic separation processes, such as ion exclusion of molasses. It is also indicated for use in potable water treatment.

General Description

• Ionic form as shipped: Na⁺
• Functional group: sulfonic acid
• Matrix: crosslinked polystyrene
• Structure: gel-type
• Appearance: light brown, translucent

Physical and Chemical Properties

• Uniformity Coefficient: max. 1.1
• Mean bead size: 0.33 - 0.36 mm
• Bulk density: 840 g/l (± 5 %)
• Density: approx. 1.26 g/ml
• Water retention: 47 - 53 wt. %
• Total capacity: min. 1.8 eq/l
• Volume change (Na⁺ --> H⁺): max. 10 vol. %
• Stability (pH-range): 0 - 14
• Stability (temperature range): -20 - 120 °C
• Storability (product): max. 2 years
• Storability (temperature range): -20 - 40 °C

Recommended Operating Conditions

• Operating temperature: max. 100 °C
• Operating pH-range: 1 - 14
• Bed depth: min. 800 mm
• Specific pressure drop (at viscosity 1 mPa·s): approx. 3.5 kPa·h/m²
• Pressure drop: max. 200 kPa
• Linear velocity (backwash, 20 °C): approx. 10 m/h
• Bed expansion (20 °C, per m/h): approx. 8 vol. %
• Freeboard (backwash, external / intern): 80 - 100 vol. %

Additional Information & Regulations

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

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Disclaimer: 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