Dowex Marathon C-10 Na

Summary

Product identification

DOWEX MARATHON C-10 is a uniform particle size, high capacity cation exchange resin. It is designed for softening and demineralization applications.

• Product Type: Strong acid cation
• Matrix: Styrene-DVB, gel
• Functional group: Sulfonic acid

Guaranteed Sales Specifications

Na⁺ form

• Total exchange capacity, min.: 2.2 eq/L (48.1 kgr/ft³ as CaCO₃)
• Water content: 40 - 45%
• Uniformity coefficient, max.: 1.1

H⁺ form

• Total exchange capacity, min.: 1.9 eq/L (41.5 kgr/ft³ as CaCO₃)
• Water content: 46 - 51%
• Uniformity coefficient, max.: 1.1

Typical Physical and Chemical Properties

Na⁺ form

• Mean particle size†: 740 ± 50 µm
• Whole uncracked beads: 95 - 100%
• Total swelling (Na⁺ → H⁺): 7%
• Particle density: 1.31 g/mL
• Shipping weight: 845 g/L (53 lbs/ft³)

H⁺ form

• Mean particle size†: 760 ± 50 µm
• Whole uncracked beads: 95 - 100%
• Total swelling (Na⁺ → H⁺): 7%
• Particle density: 1.22 g/mL
• Shipping weight: 810 g/L (50 lbs/ft³)

Recommended Operating Conditions

• Maximum operating temperature: 130°C (265°F)
• pH range: 0 - 14
• Bed depth, min.: 800 mm (2.6 ft)
• Flow rates:
  • Service/demineralizing and softening: 5 - 50 m/h (2 - 20 gpm/ft²)
  • Service/sodium or amine cycle polishing: 38 - 75 m/h (15 - 30 gpm/ft²)
  • Backwash: See Figure 1
  • Co-current regeneration/displacement rinse: 1 - 10 m/h (0.4 - 4 gpm/ft²)
  • Counter-current regeneration/displacement rinse: 5 - 20 m/h (2 - 8 gpm/ft²)
• Total rinse requirement: 2 - 5 bed volumes
• Regenerant: 1 - 8% H₂SO₄, 4 - 8% HCl or 8 - 12% NaCl

Typical Properties and Applications

DOWEX MARATHON C-10 is suitable for demineralizing, softening, and single-bed condensate polishing applications. Its uniform particle size provides consistent performance during exhaustion, regeneration, and backwash. The resin exhibits high stability against compressive, osmotic, and oxidative stresses.

Packaging

• 25 liter bags
• 1 cubic foot bags
• 5 cubic foot fiber drums

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