Product Overview
Poly(acrylic acid), sodium salt (PAA-Na) is a water-soluble anionic polymer supplied as a free-flowing powder with an approximate molecular weight of 2,000. The sodium salt form provides enhanced solubility and pH stability, making it suitable for a wide range of aqueous formulations.
This lower molecular weight grade is commonly used as a dispersant, rheology modifier, and stabilizer where efficient dispersion, suspension stability, and controlled viscosity are required without excessive thickening.
Key Properties
- Water-soluble sodium salt form for rapid dissolution
- Anionic carboxylate functionality supports dispersion and stabilization
- Low molecular weight enables effective performance with minimal viscosity increase
- Improved pH stability compared to the acid form
- Suitable for a wide range of aqueous formulations
Applications
Water Treatment
Used as a dispersant and scale inhibitor to help prevent fouling and mineral deposition in pipelines, boilers, and industrial water systems.
Detergents
Functions as a polymer additive to improve soil dispersion and provide anti-redeposition performance in liquid detergent and cleaning formulations.
Cosmetics & Personal Care
Acts as a thickener and emulsion stabilizer in personal care products, supporting texture and formulation stability.
Solubility & Compatibility
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Solubility: Freely soluble in water
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Polymer type: Anionic polyelectrolyte (sodium salt)
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pH stability: Improved stability across a broad pH range compared to the acid form
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Compatibility: Performance influenced by ionic strength, salts, and other formulation components
Final solution properties depend on concentration, pH, and electrolyte content. Evaluate performance under target formulation conditions.
Preparation Tips
- Add powder gradually to water under agitation to ensure uniform dissolution.
- Allow sufficient mixing time for complete hydration.
- Monitor ionic strength and pH, as these can affect dispersion and viscosity behavior.
- Adjust order of addition as needed for optimal formulation stability.
Handling & Storage
- Store tightly sealed in a cool, dry environment.
- Protect from moisture uptake.
- Use clean, dry tools to prevent contamination.
Frequently Asked Questions
1. What is Poly(acrylic acid), sodium salt commonly used for?
It is commonly used as a dispersant, stabilizer, and rheology modifier in water treatment, detergents, personal care formulations, and other aqueous systems.
2. How does MW ~2,000 affect performance?
This low molecular weight grade provides efficient dispersion and stabilization with minimal viscosity contribution, making it suitable for formulations requiring low to moderate thickening.
3. Is this polymer soluble in water?
Yes. Poly(acrylic acid), sodium salt is freely soluble in water and readily forms clear solutions depending on concentration and formulation conditions.
4. What factors influence formulation performance?
Polymer concentration, pH, ionic strength, and the presence of salts or surfactants can all influence dispersion, viscosity, and stability.
Safety & Documentation
Follow standard laboratory and industrial hygiene practices. Refer to the Safety Data Sheet (SDS) for hazard information, recommended PPE, and safe handling guidance.
