Strong Acid Cation Exchange Resin

DOSHION CSA 9 is a GEL Type Strong Acid Cation Exchange Resin product by the sulfonation of styrene-divinylbenzene copolymers. The resin is designed to combine high operational capacity and superior physical stability. This quality is assured by specifications that call for a whole un-cracked bead content of at least 95% and an unmatched bead strength. DOSHION CAS-9 is the resin of choice whenever high performance is required. The resin is available in both Na+ and H+ form.
DOSHION CSA 9 can also be supplied with such particle size and density characteristics that will assure fast and sharp separations when used in combination with DOSHION ASB-1 08 or DOSHION GA-11 anion resin in mixed bed applications.
Matrix Cross linked Polystyrene Macroporous
Functional group  So3 (Sulphonic )
Ionic Form H+ – Sodium 
Na+ -Hydrogen
Physical Form Hard Moist Beads
Particle size (mm) 0.30- 1.20
Moisture Content % 48-54  H+  form
43 – 50  Na+ form
Total Exchange Capacity (eq/L) (min) 1.8  H+  form 
2.0 Na+ form
Bulk Density / Shipping Weight (gm/L) 800-830  H+  form 
830-850  Na+ form
 Operating pH Range 0-14
Solubility in common solvents Insoluble
 Volume change % (max) :  Na+ to H+
Minimum Bed Depth cm 75
Regenerant Concentration % 10-16(NaCl)
1-5 (H2So4
4-5 (HCL)
Regenerant Flow Rate *BV/hr 2 – 8
Regenerant Contact Time Minutes 30
Regeneration Level Kg per m3 of Resin 60-160 (NaCl)
60-150  (H2So4
30-150 (HCL)
Displacement Rinse Rate *BV/hr 2 – 8
Displacement Rinse Volume *BV 1-2
Fast Rinse Rate *BV/hr 10-40
Fast Rinse volume *BV 4 – 10
Service flow rate *BV/hr 10-40

* 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)

  1. AWB 7020D
  2. AWB 7030D
  3. AWB 7050D
  4. DCR 11
  5. CSA 9
  6. CSA 29
  7. CSA 609D

Nuclear Grade Resins (2)

Color Removal & COD Reduction Resins (1)

Special Application Resins (5)