LEWATIT® MDS 1269 Ca / 290

Summary

Product identification

Lewatit® MDS 1269 Ca 290 is a food grade, gel-type, monodisperse, strongly acidic cation exchange resin based on a styrene-divinylbenzene copolymer. It is manufactured in a 1,2-dichloroethane-free production process.

Specified Data

• Common Description: Ca²⁺
• Delivery form: Not specified
• Functional group: Sulfonic acid
• Matrix: Styrenic
• Structure: Gel
• Appearance: Light brown, transparent
• Uniformity coefficient: max. 1.15
• Mean bead size (d₅₀): 0.26 - 0.32 mm
• Total capacity (H⁺ form): min. 1.5 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 10%): 800 g/L
• Density: approx. 1.3 g/mL
• Water retention (H⁺ form): approx. 55 - 67 % by 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 per m/h (20°C): 15 %
• Specific pressure loss (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.
• Toxicity: The safety data sheet must be observed.
• Disposal: Follow European waste nomenclature for disposal in the European Community.
• Storage: Recommended to store above freezing point, under roof, in dry conditions, out of direct sunlight. Frozen resin should thaw gradually at ambient temperature. Packaging stability is limited to 24 months under described storage conditions.
• Startup recommendations for drinking water treatment are available on demand.

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