LEWATIT® MDS 1268 K / 350

Summary

Product identification

• Product Name: Lewatit® MDS 1268 K 350
• Common Description: Food grade, gel-type, monodisperse, strongly acidic cation exchange resin based on a styrene-divinylbenzene copolymer. Suitable for chromatographic separations, such as the ion exclusion of molasses.
• Functional group: Sulfonic acid
• Matrix: Styrenic
• Structure: Gel
• Delivery form: K⁺
• Appearance: Light brown, transparent

Specified Data

• Uniformity coefficient: max. 1.15
• Mean bead size (d₅₀): 0.32 - 0.38 mm
• Total capacity (H⁺ form): min. 1.5 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 10%): 830 g/L
• Density: approx. 1.3 g/mL
• Water retention (H⁺ form): approx. 55-67 weight %
• Stability pH range: 5-14
• Stability temperature range: 1-120 °C
• Storage time (after delivery): min. 0.5 years
• Storage temperature range: -20 - +40 °C

Operation

• Operating temperature: max. 120 °C
• Operating pH range during exhaustion: 0-14
• Bed depth for single column: min. 800 mm
• Backwash bed expansion (at 20°C): 15 % per m/h
• Specific pressure loss (at 15°C): 4 kPa*h/m²
• Max. pressure loss during operation: 200 kPa

Additional Information & Regulations

• Safety precautions: Strong oxidants, e.g. nitric acid, can cause violent reactions. Observe the safety data sheet.
• Disposal: According to the European waste nomenclature within the European Community.
• Storage: Recommended above freezing point of water, under roof, dry, and out of direct sunlight. If frozen, allow to thaw gradually at ambient temperature before handling or use.
• Packaging: Limited to 24 months under described storage conditions for reliable containment. Use within this timeframe or check packaging condition regularly.

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