LEWATIT® A 8072

Summary

Product identification

Lewatit® A 8072 is a weakly basic, gelular anion exchange resin based on an acryl-divinylbenzene copolymer with a special bead size distribution.

Product Information

• Common Description: free base
• Delivery form: free base
• Functional group: tertiary amine
• Matrix: acrylic
• Structure: gel
• Appearance: ivory, translucent

Specified Data

• Uniformity coefficient: max. 1.8
• Effective size (d10): 0.50 - 0.75 mm
• Total capacity (delivery form): min. 1.6 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 5%): 740 g/L
• Density: approx. 1.07 g/mL
• Water retention (delivery form): approx. 53-61 % by weight
• Volume change (free base - Cl⁻): max. approx. 25 %
• Stability pH range: 0 - 14
• Storage time (after delivery): max. 2 years
• Storage temperature range: -20 - +40 °C

Operation

• Operating temperature: max. 60 °C
• Operating pH range during exhaustion: 0 - 8
• Bed depth for single column: min. 800 mm
• Backwash bed expansion per m/h (20°C): 15 %
• Specific pressure loss (15°C): 1.1 kPa*h/m²
• Max. pressure loss during operation: 150 kPa
• Specific flow rate: max. 50 BV/h

Regeneration

• NaOH regeneration concentration: approx. 2-6 wt. %
• NaOH regeneration quantity (co-current): min. 80 g/L resin
• NaOH regeneration quantity (counter-current): min. 60 g/L resin
• Regeneration contact time: min. 30 minutes
• Slow rinse at regeneration flow rate: min. 5 BV
• Fast rinse at service flow rate: min. 10 BV

Additional Information & Regulations

• Safety precautions: Strong oxidants, e.g. nitric acid, can cause violent reactions if they come into contact with ion exchange resins.
• Toxicity: The safety data sheet must be observed.
• Disposal: Ion exchange resins must be disposed of according to the European waste nomenclature.
• Storage: Recommended to store above freezing point, under roof, in dry conditions without direct sunlight. If frozen, thaw gradually at ambient temperature.
• Packaging: Packaging stability is limited to 24 months under described storage conditions.

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