CWA 92D

Macroporous Weak Acid Cation Exchange Resin

DOSHION CWA 92D is a high capacity macroporous type Polyacrylic weak acid cation exchange resin. It is insoluble in acids, alkalis and all common solvents.
The Characteristics of CWA 92D:
• Excellent selectivity for heavy metals
• Used as an economic replacement of chelating resin in some industries
• Used in dealkalisation in domestic applications
PROPERTIES
Matrix Cross linked Polystyrene Macroporous
Functional group -COO – Carboxylic Acid
Ionic Form H+ -Hydrogen
Physical Form Spherical Beads
Particle size (mm) 0.30- 1.25
Moisture Content % 45 – 53
Total Exchange Capacity (eq/L) (min) 4.0
Bulk Density / Shipping Weight (gm/L) 740-800
Homogeneous Coefficient (max) 1.6
Reversible Swelling (H+ to Na+ )%(max) 65
Solubility in common solvents Insoluble
SUGGESTED OPERATING CONDITIONS
Minimum Bed Depth cm 75
Operating pH Range 0-14
Regenerant Concentration % 2-4(HCl)
Regenerant Flow Rate *BV/hr 4 – 8
Regenerant Contact Time Minutes 30-60
Regeneration Level Kg  per M3  of Resin 40-150 (HCl)
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 – 10
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