LEWATIT® K 2629

Summary

Product identification

• Product name: LEWATIT® K 2629
• Common Description: Strongly acidic, macroporous, polymer-based ion exchange resin with sulfonic acid groups, in spherical bead form.
• Functional group: sulfonic
• Matrix: styrenic
• Structure: macroporous
• Appearance: beige, opaque
• Delivery form: H⁺

Applications

LEWATIT® K 2629 is ideally suited for processing organic liquid media, particularly in the following applications:

• Production of the gasoline additives MTBE, ETBE and TAME
• Phenol alkylation with olefins
• Hydration of olefins
• Esterifications and etherifications
• Condensations
• Alkylation reactions
• Cation removal and base adsorption from both aqueous as well as organic process streams

Operating limits

• Stability temperature range: 1-125 °C
• Operating temperature (max.): 125 °C
• Operating pH range during exhaustion: 0-14
• Max. pressure loss during operation: 250 kPa
• Bed depth for single column (min.): 1000 mm

Physical and Chemical Properties

• Total capacity (delivery form): min. 1.7 eq/L
• Uniformity coefficient (max.): 1.6
• Range of size for >90 vol% of all beads: 0.40-1.25 mm
• Effective size (d10): 0.50-0.62 mm
• Bulk density for shipment (+/- 5%): 730 g/L
• Density (approx.): 1.19 g/mL
• Water retention (delivery form, approx. weight %): 50-55 %
• Surface BET (approx.): 40 m²/g
• Pore volume (approx.): 0.3 cm³/g
• Pore diameter (approx.): 33 nm

Storage and Handling

• Storage temperature range: -20 - +40 °C
• Recommended storage: Above freezing point of water, under roof, in dry conditions, without direct sunlight.
• Packaging stability: Limited to 24 months under recommended storage conditions.
• Frozen resin: Allow to thaw gradually at ambient temperature before handling or use. Do not accelerate thawing.
• Safety precautions: Strong oxidants (e.g., nitric acid) can cause violent reactions. Observe safety data sheet.
• Disposal: According to European waste nomenclature within the European Community.

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