CWA 66D

Macroporous Weak Acid Cation Exchange Resin

DOSHION CWA 66D is a high capacity macroporous polyacrylic weak acid cation exchange resin. It is insoluble inacids, alkalis and all common solvents.
The Characteristics of Doshion CWA-66D:
• Excellent selectivity for heavy matals
• Used as an economic replacement of chelating resin in some industries
• Used in dealkalisation in domestic applications
• Used in softening of high TDS water & Waste water
PROPERTIES
Matrix Cross Linked Polystyrene Macroporous
Functional group Carboxylic Acid
Ionic Form H+ – Hydrogen
Appearance Spherical beads
Particle Size (mm) 0.30 – 1.25 (99%)
Molsture Content % 50-60
Total Exchange Capacity (Min) (eq/L) 3
Bulk Density or Shopping Weight gms/ltr 700 – 800
Reversible Swelling (H+ to Na+ ) % 70
Solubility in common solvents Insoluble
SUGGESTED OPERATING CONDITIONS
Operating pH 0-14
Minimum bed depth cm 75
Regenerant Concentration % 0.5-0.8 (H2SO4)
1 – 5 (HCl)
Regenerant flow rate ^BV/hr 4-8
Regenerant contact time Minutes 30 -60
Regeneration Level 100% H2SO4     HCl  m3 per m3 of Resin 115% of the operating capacity used
Displacement Rinse rate *BV/hr 4-8
Displacement Rinse volume *BV 1.5-2.0
Fast Rinse rate *BV/hr 10-20
Fast Rinse volume *BV 4-6
Service flow rate *BV/hr 5-40

*Bed Volumes/Hour **Bed Volumes

Pharma Polymer (20)

Active Pharmaceutical Ingredients (API) (4)

Taste Masking Agents (7)

Tablet Disintegrating Agents (3)

Nicotine Taste Masking (1)

Separation of Aminoacids, Enzymes & Alkloids (1)

Purification of Vitamin C (1)

Stabilization of Vitamin B12 (1)

Sustain/Control release (2)

Ion Exchange Resin (53)

Softening Resins (5)

Demineralisation Resins (22)

Condensate Polishing /TPS Resins (7)

Catalytic Resins (2)

Super Charged Resins (2)

Decolor / De Ashing Resins (7)

Nuclear Grade Resins (2)

Color Removal & COD Reduction Resins (1)

Special Application Resins (5)

  1. DIRM 412
  2. CWA 66D
  3. CWA 92D
  4. DCHR 74
  5. DCHR 78