Poly(styrenesulfonic acid), sodium salt is a high-molecular-weight polyelectrolyte with excellent water solubility and strong anionic charge density. It is widely used in ion-exchange membranes, dispersants, and conductive coatings due to its high charge retention and chemical stability.
This Poly(sodium styrenesulfonate) grade has a molecular weight of approximately 1,000,000 and is useful for research and formulation work involving membrane-based energy materials, water treatment additives, antistatic coatings, controlled-release materials research, and paper or textile surface modification.
Key Properties
- High-molecular-weight anionic polyelectrolyte
- Excellent water solubility and strong charge density
- Product Number: 08773
- CAS Number: 25704-18-1
- Linear formula: [-CH2CH(C6H4SO3Na)-]n
- Molecular formula: (C8H8O3S.Na)x
- Molecular weight: ~1,000,000
- Synonym: Poly(sodium styrenesulfonate)
- Density: 0.801 g/mL at 25°C
- Specification viscosity: 70-170 cPs
- Specification solids: 90.00-100.00%
Applications
Ion-Exchange Membranes & Fuel Cells
Used in membrane-based energy materials research where anionic charge density, proton transport behavior, and polymer stability are important evaluation factors.
Water Treatment & Dispersants
Functions as a dispersant, scale inhibitor, and stabilizer in water treatment and wastewater formulation studies.
Electronics & Conductive Coatings
May be used in antistatic and conductive coating research where charge dissipation, water solubility, and ionic polymer behavior are desired.
Controlled-Release Materials Research
Useful in pharmaceutical and biomedical materials research involving charged polymer carriers, ion-responsive systems, and controlled-release formulation studies. Suitability for any medical, clinical, diagnostic, or regulated use must be independently validated.
Paper & Textile Processing
Applicable to specialty paper and textile studies where surface interactions, ink adhesion, charge control, and polymer adsorption behavior are being evaluated.
Solubility & Compatibility
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Solubility: Water-soluble sodium polystyrenesulfonate
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Polymer type: High-molecular-weight anionic polyelectrolyte
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Functional character: Sulfonate groups provide strong anionic charge density
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Formulation use: Applicable to ion-exchange membranes, dispersants, conductive coatings, water treatment additives, and surface modification research
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Compatibility: Performance depends on pH, ionic strength, polymer concentration, salts, additives, substrate, and processing conditions
Final material behavior should be evaluated under the intended formulation, processing, and application conditions.
Preparation Tips
- Add gradually to water or compatible aqueous systems under agitation to support uniform dispersion or dissolution.
- Allow sufficient mixing time for complete incorporation, especially at higher molecular weight and higher concentrations.
- Evaluate pH, ionic strength, salt content, and concentration, as these can influence viscosity, dispersion behavior, and charge interactions.
- For coating, membrane, or surface modification studies, test film formation, adhesion, conductivity, and stability under target conditions.
- Document concentration, mixing order, pH, temperature, and processing conditions for reproducible results.
Handling & Storage
- Exercise normal care when handling this material.
- Store according to the product label and Certificate of Analysis.
- Current live product page lists storage at 4°C; specification PDF lists 20°C.
- Keep container tightly closed when not in use.
- Protect from contamination and unnecessary environmental exposure.
- Use standard laboratory handling practices.
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Frequently Asked Questions
1. What is Poly(styrenesulfonic acid), sodium salt used for?
It is used in research and formulation work involving ion-exchange membranes, dispersants, water treatment additives, conductive coatings, controlled-release materials, and paper or textile surface modification.
2. What is Poly(sodium styrenesulfonate)?
Poly(sodium styrenesulfonate) is a synonym for Poly(styrenesulfonic acid), sodium salt, an anionic polyelectrolyte containing sulfonate groups.
3. What is the molecular weight of this product?
The listed molecular weight for this product is approximately 1,000,000.
4. Is this polymer water soluble?
Yes. The live product description identifies this sodium salt polyelectrolyte as having excellent water solubility.
5. Can this product be used in biomedical or pharmaceutical applications?
This product may be used in biomedical and pharmaceutical materials research, including controlled-release and charged polymer system studies. Suitability for any medical, clinical, diagnostic, or regulated use must be independently validated.
6. How should this product be stored?
Store according to the product label and Certificate of Analysis. The current live product page lists storage at 4°C, while the specification PDF lists 20°C.
Safety & Documentation
This product is listed as harmless under normal precautions. Exercise normal care when handling this material and refer to the Safety Data Sheet (SDS), product specification, and Certificate of Analysis for safety, handling, storage, and lot-specific guidance.
