LEWATIT® K 2649

Summary

Product identification

• Product Name: LEWATIT® K 2649
• Common Description: Strongly acidic, macroporous, polymer-based resin with sulfonic acid groups. Dried form, suitable for anhydrous conditions.
• Functional Group: Sulfonic acid
• Matrix: Styrenic
• Structure: Macroporous
• Appearance: Beige, opaque

Applications

LEWATIT® K 2649 is suited for processes requiring anhydrous conditions and can be used in polar and non-polar media for applications including:

• Phenol alkylations with olefins
• Olefin oligomerizations
• Esterifications and etherifications
• Alkylation of larger polar and non-polar molecules

Note: For reactions involving the use or generation of water, Lewatit® K 2629 is recommended instead.

Specified Data

• Delivery form: H⁺
• Uniformity coefficient: max. 1.6
• Range of size for >90 vol% of all beads: 0.4 - 1.25 mm
• Total capacity (dry resin): min. 4.7 eq/kg

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 5%): 600 g/L
• Density: approx. 1.19 g/mL
• Stability temperature range: 1-130 °C
• Storage temperature range: -20 - +40 °C
• Surface BET: approx. 40 m²/g
• Pore volume: approx. 0.3 cm³/g
• Pore diameter: approx. 33 nm

Operation

• Operating temperature: max. 130 °C
• Operating pH range during exhaustion: 0-14
• Bed depth for single column: min. 1000 mm
• Max. pressure loss during operation: 250 kPa

Storage and Handling

• Recommended Storage: Above freezing point of water, under roof, dry, and out of direct sunlight.
• Frozen Resin: If frozen, allow to thaw gradually at ambient temperature without mechanical handling. Must be completely thawed before use. Do not accelerate thawing.
• Packaging Stability: Limited to 24 months under recommended storage conditions. Use within this timeframe or check packaging condition regularly.
• Safety Precautions: Strong oxidants (e.g., nitric acid) can cause violent reactions. Observe the safety data sheet for detailed information on handling, safety, and ecology.
• Disposal: Follow 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