LEWATIT® MP 62 BG

Summary

Product identification

Lewatit® MP 62 BG is a food-grade, weakly basic, macroporous anion exchange resin based on polystyrene, containing only tertiary amino groups. It is supplied in the free base form.

Applications

• Acid removal and simultaneous decolorization of organic product solutions (e.g., sugar, gelatin, glycerin, grape must, fruit concentrates).
• Treatment of products sensitive to alkali.
• Use in Lewatit WS system (fluidized bed).
• Use in Lewatit VWS system (compound fluidized bed).

General Description

• Ionic form as shipped: free base
• Functional group: tertiary amine
• Matrix: crosslinked polystyrene
• Structure: macroporous
• Appearance: beige, opaque

Physical and Chemical Properties

• Uniformity Coefficient: max. 1.6
• Bead size: > 90 % between 0.5 - 1.25 mm
• Effective size: 0.63 (± 0.05) mm
• Bulk density: approx. 670 g/l (± 5 %)
• Density: approx. 1.02 g/ml
• Water retention: 50 - 55 wt. %
• Total capacity: min. 1.7 eq/l
• Volume change (free base → Cl⁻): max. 45 vol. %
• Stability (pH-range): 0 - 14
• Stability (temperature range): -20 to 100 °C
• Storability (product): max. 2 years
• Storability (temperature range): -20 to 40 °C

Recommended Operating Conditions

• Operating temperature: max. 80 °C
• Operating pH-range: 0 - 8
• Bed depth: min. 800 mm
• Specific pressure drop (15 °C): approx. 0.9 kPa·h/m²
• Pressure drop: max. 250 kPa
• Linear velocity (operation): max. 20 m/h
• Linear velocity (backwash, 20 °C): approx. 2 - 3 m/h
• Bed expansion (20 °C, per m/h): approx. 30 vol. %

Regeneration

• Regenerant: NaOH
• Counter current regeneration level: approx. 60 g/l
• Counter current regeneration concentration: 2 - 4 wt. %
• Co-current regeneration level: approx. 60 g/l
• Co-current regeneration concentration: approx. 2 - 4 wt. %
• Linear velocity (regeneration): approx. 5 m/h
• Linear velocity (rinsing): approx. 5 - 8 m/h
• Rinse water requirement (slow / fast): approx. 6 BV

Additional Information

Safety Precautions

• Contact with strong oxidants (e.g., nitric acid) can cause violent reactions.
• Observe the safety data sheet for product description, transport, storage, handling, safety, and ecology.

Disposal

• Disposal in the European Community must follow the European waste nomenclature.

Storage

• Store above freezing point of water, under roof, in dry conditions, and out of direct sunlight.
• If frozen, allow to thaw gradually at ambient temperature before handling or use. Do not accelerate thawing.

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