LEWATIT® MDS 1269 K / 350

Summary

Product identification

• Product Name: Lewatit® MDS 1269 K 350
• Product Type: Food grade, gel-type, monodisperse, strongly acidic cation exchange resin
• Matrix: Styrene-divinylbenzene copolymer
• Functional group: Sulfonic acid
• Manufacturing Process: 1,2-dichloroethane-free production process

Specified Data

• Common Description: K⁺
• Delivery form: Gel
• Appearance: Light brown, transparent
• Uniformity coefficient: max. 1.15
• Mean bead size (d₅₀): 0.33 - 0.39 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 % by weight
• Stability pH range: 5-14
• Stability temperature range: 1-120 °C

Operating Limits

• Storage time (after delivery): min. 0.5 years
• Storage temperature range: -20 - +40 °C
• Operating temperature: max. 120 °C
• Operating pH range during exhaustion: 0-14
• Bed depth for single column: min. 800 mm
• Backwash bed expansion (20°C): 15 % per m/h
• Specific pressure loss (15°C): 4 kPa*h/m²
• Max. pressure loss during operation: 200 kPa

Additional Information & Regulations

• Safety Precautions: Avoid contact with strong oxidants such as nitric acid. Observe safety data sheets.
• Disposal: Dispose according to European waste nomenclature.
• Storage Recommendations: Store above freezing point, under roof, dry, and out of direct sunlight. If frozen, thaw gradually at ambient temperature before handling or use.
• Packaging: Packaging stability is limited to 24 months under recommended storage conditions. 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