Datasheet summary
LEWATIT® K 2621
PDF datasheet mirror for LEWATIT® K 2621 (Lanxess LEWATIT). Verify with OEM before design.
Summary
Product identification
- Product Name: Lewatit® K 2621
- Common Description: Strongly acidic, macroporous, polymer-based ion exchange resin in spherical bead form with sulfonic acid groups.
- Functional group: sulfonic
- Matrix: styrenic
- Structure: macroporous
- Appearance: beige, opaque
- Delivery form: H⁺
Applications
This resin is ideally suited for processing organic liquid media and is particularly used in:
- Production of the gasoline additives MTBE, ETBE and TAME
- Phenol alkylation with olefins
- Hydration of olefins
- Esterifications and etherifications
- Condensations
- Alkylation reactions
Operating limits
- Operating temperature: max. 125 °C
- Operating pH range during exhaustion: 0-14
- Bed depth for single column: min. 1000 mm
- Max. pressure loss during operation: 250 kPa
- Stability temperature range: 1-125 °C
Physical and Chemical Properties
- 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
- Total capacity (delivery form): min. 1.4 eq/L
- Bulk density for shipment (+/- 5%): 700 g/L
- Density: approx. 1.14 g/mL
- Water retention (delivery form): approx. 57-63 % weight
- Surface BET: approx. 40 m²/g
- Pore volume: approx. 0.6 cm³/g
- Pore diameter: approx. 65 nm
Storage and Handling
- Storage temperature range: -20 - +40 °C
- Recommended storage conditions: Above the freezing point of water, under roof, in dry conditions without direct sunlight.
- Packaging stability: Limited to 24 months under recommended storage conditions. It is recommended to use the product within this timeframe, otherwise check packaging condition regularly.
- Frozen resin handling: If resin becomes frozen, it should not be mechanically handled and left to thaw gradually at ambient temperature. It must be completely thawed before handling or use. Do not accelerate thawing.
- Safety precautions: Strong oxidants, e.g., nitric acid, can cause violent reactions. Observe the safety data sheet.
- Disposal: According to the European waste nomenclature.
Disclaimer This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.