CSA 121
Softening Resin Strong Acid Cation(Gel)
DOSHION CSA 121 has a strongly acidic uni-functional cross linked polystyrene structure containing sulphonic acid groups. It is a high capacity gel type resin with excellent physical and chemical properties specially developed for industrial and domestic water softening applications having high hardness of calcium and magnesium salts. Primarily the resin is supplied in Sodium form, however, it can also be used in demineralisation and other special applications in H+ form.
DOSHION CSA 121 is highly resistant to attrition and osmotic shocks & offers minimum pressure drop across the resin bed under a wide variety of operating conditions.
Properties
| Matrix | Cross linked Polystyrene Gel |
| Functional group | SO3 (Sulphonic) |
| Ionic Form | Na+ - Sodium |
| Physical Form | Hard Moist Beads |
| Particle size (mm) | 0.30- 1.20 |
| Moisture Content % | 47 – 53 % |
| Total Exchange Capacity (eq/L) (min) | 1.8 for Na+ form |
| Bulk Density / Shipping Weight (gm/L) | 750-820 |
| Operating pH Range | 0-14 |
| Solubility in common solvents | Insoluble |
| Volume change % (max) : Na+ to H+ | 10 |
Operating Conditions
| Functional group | °C | 120 |
| Minimum Bed Depth | cm | 75 |
| Regenerant Concentration | % | 10-16 (NaCl) |
| Regenerant Flow Rate | *BV/hr | 2 – 4 |
| Regenerant Contact Time | Minutes | 30 |
| Regeneration Level 100% | Kg/m3 of Resin | 60-160 (NaCl) |
| Displacement Rinse Rate | *BV/hr | 2 – 4 |
| 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 Volume/ Hour ; # Bed Volume
Full Range of Ion Exchange Resins
| Cation Exchange Resin | Anion Exchange Resin | DM Resin |
|---|---|---|
| CSA 121 | GA 11 | DMB 13 |
| CSA 121 - FG | GA 11 UPS | DMB 13 UPS |
| CSA 9 | GA 12 | DMB 13 S |
| CSA 9 UPS | GA 13 | |
| CSA 9 - FG | GA 13 UPS | |
| CSA 9 L | ASB 108 | |
| CSA 9 L Na - FG | ASB 171 | |
| CSA 29 | ASB 8010 D | |
| CSA 29 UPS | ASB 8010 D UPS | |
| CSA 609 D | ASB 8020 D | |
| CWA 63 | AWB 7020 D | |
| CWA 92 D | AWB 7030 D | |
| CSA 309 | AWB 7050 D | |
| AWB 7050 D UPS | ||
| GA 711 |
Special Application Ion Exchange Resin
| DCHR 74 | CGC 1200 | DBR 108 |
| DCHR 78 | CMC 1900 | FRC 10 |
| DIRM | CMC 2400 | ASB 108 H UPS |
| DCR 11 | DAAR 85 | GA 13 H UPS |
| DMB 10 | DAAR 312 | CWS 66 D |
| DMB 11 | DAAR 313 | IPSR 550 |
| DMB 13 S | DAAR 412 |