CSA 29

Strong Acid Cation Exchange Resin

DOSHION CSA 29 resin is a strongly acidic unifunctional cross linked polystyrene structure containing Sulphonic Acid as functional groups. It is a premium grade gel type cation exchange resin with high capacity resin supplied in Hydrogen as well as Sodium form with exchange capacity and physical stability. The resin is used in industrial and domestic water softening applications having high Calcium & Magnesium salts.

The Characteristics of CSA 29 :
• More resistance to oxidation than CSA 9 • Excellent for softening, dealkalisation, demineralisation and chemical process applications
• Ideal for condensate polishing in Ammonia cycle
PROPERTIES
Matrix Cross linked Polystyrene Gel
Functional group So3 (Sulphonic )
Ionic Form H+ – Sodium
Na+ -Hydrogen
Physical Form Hard Moist Beads
Particle size (mm) 0.30- 1.20
Moisture Content % 46-57 H+ form
40 – 45 Na+ form
Total Exchange Capacity (eq/L) (min) 2.00 H+ form  >=
2.10 Na+ form
Bulk Density / Shipping Weight (gm/L) 800-840
Operating pH Range 0-14
Solubility in common solvents Insoluble
Operating temperature °c(max) 120
Volume change % (max) :Na+ to H+ 6-8
SUGGESTED OPERATING CONDITIONS
Minimum Bed Depth cm 75
Regenerant Concentration % 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  60-150 (H2So4)
40-150 (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

* Bed Volumes/Hour #Bed Volume

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