Dowex 88

Summary

Product identification

• Product: DOWEX™ 88
• Type: Strong acid cation
• Matrix: Styrene-DVB, macroporous
• Functional group: Sulfonate
• Trademark: DOWEX™

Typical Physical and Chemical Properties

• Ionic form as produced: Na⁺
• Total exchange capacity, min.: 1.8 eq/L
• Water content: 42 - 48 %
• Bead size distribution:
  • Range: 300 - 1,200 µm

  • 1,200 µm (> 16 mesh): < 5 %

  • < 420 µm (< 40 mesh): < 5 %
• Total swelling (Na⁺ → H⁺): 5 %
• Whole uncracked beads, min.: 95 %
• Particle density, approx.: 1.2 g/mL
• Shipping weight, approx.: 800 g/L (50 lbs/ft³)

Recommended Operating Conditions

• Maximum operating temperature (H⁺ form): 150°C (300°F)
• pH range: 0 - 14
• Bed depth, min.: 91 cm (3 ft)
• Flow rates:
  • Service: 2 - 4 bed volumes/hour
  • Backwash: See Figure 1
  • Regeneration time: 30 - 45 min.
  • Displacement rinse: 30 - 45 min.
  • Fast rinse (if applicable): 2 - 10 bed volumes/hour
• Total rinse requirement: 3 - 6 bed volumes
• Regenerant:
  • Concentration: 5 - 7% HCl
  • Level, 100% basis†: 6 - 7 lbs/ft³ (96 - 112 kg/m³)
  • Temperature, max.: 93°C (200°F)

† Regeneration level may be lower for counter-current regeneration systems.

Typical Properties and Applications

DOWEX 88 resin is a macroporous strong acid cation resin for use in deashing, softening and demineralization. This macroporous matrix provides excellent mechanical strength and good operating capacity.

Packaging

• 25 liter bags
• 5 cubic feet fiber drums
• 1 cubic meter super sacks

Disclaimer

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