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Specifications of Divinylbenzene-styrenesulfonic acid copolymer丨CAS 39389-20-3
|
Appearance |
Camel opaque spherical particles |
|
Ionic form shipped |
Hydrogen |
|
Concentration of active sites |
1.7 eq/L min |
|
Moisture holding capacity (wet, H+ form) |
52 to 57% |
|
Shipping weight |
770 g/L (48 lbs/ft³) |
|
Particle size uniformity coefficient |
1.7 min |
|
Harmonic mean size |
0.600 to 0.850 mm |
|
Fine contents (< 0.355 mm) |
1.0% max |
|
Coarse beads (> 1.180 mm) |
5.0% max |
|
Nitrogen BET Surface area |
53 m²/g |
|
Average pore diameter |
300 Å |
|
Total pore volume |
0.40 ml/g |
|
Shrinkage |
Water to methanol: 5% |
Overview
Divinylbenzene-styrenesulfonic acid copolymer丨CAS 39389-20-3 is a type of strongly acidic cation-exchange resin. It combines the physical robustness from divinylbenzene crosslinking with the acidic functionality of sulfonated styrene units. This copolymer is widely used in ion-exchange processes and catalysis due to its strong acidic sites and high surface area.
Applications
1. Ion Exchange Resin
Water Treatment:
Used in water softening and purification systems to exchange cations like calcium, magnesium, and heavy metals.
Deionization and Demineralization:
Removes metal ions from process streams in industrial and laboratory settings.
2. Catalysis
Acid Catalyst in Organic Reactions:
Serves as a solid acid catalyst for esterification, alkylation, and polymerization reactions. It can replace traditional liquid acids, offering easier handling and reuse.
3. Separation Processes
Chromatography:
Utilized in ion-exchange chromatography for separating charged molecules, proteins, or nucleotides.
4. Electrochemical Applications
Fuel Cells:
As a proton exchange membrane component or catalyst support in some fuel cell designs.
5. Chemical Synthesis
Catalytic Resin:
Used in fine chemical and pharmaceutical syntheses where acidic conditions are required without corrosive liquids.
Benefits
✅ Strong Acidic Functionality
Sulfonic acid groups provide strong acid sites enabling efficient catalysis and ion exchange.
✅ Mechanical and Chemical Stability
Crosslinked DVB matrix offers robustness under harsh chemical and physical conditions.
✅ Reusability
Resin can be regenerated and reused multiple times, reducing waste and cost.
✅ Ease of Handling
Solid resin form eliminates the hazards of handling corrosive liquid acids.
✅ High Surface Area
Provides good accessibility of functional groups for efficient ion exchange and catalysis.
Summary
Divinylbenzene-styrenesulfonic acid copolymer丨CAS 39389-20-3 is a versatile strongly acidic cation-exchange resin with wide applications in water treatment, catalysis, and separation processes. Its combination of strong acid sites and mechanical durability makes it valuable in industrial and laboratory settings.
