Poly(acrylic acid), sodium salt, 20% solution in water (MW ~225,000)
Poly(acrylic acid), sodium salt (PAA-Na) is a water-soluble anionic polymer featuring carboxylate functionality and supplied as a 20% aqueous solution. The sodium salt form provides improved solubility and pH stability compared to the acid form, making it well suited for use in a wide range of aqueous formulations.
PAA-Na is widely used as a dispersant, rheology modifier, and stabilizing agent due to its ability to bind multivalent ions, control viscosity, and prevent particle agglomeration. Its relatively high molecular weight contributes to effective water absorption and suspension stability across many formulation environments.
Key Properties
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Chemical type: Poly(acrylic acid), sodium salt
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Approximate molecular weight: ~225,000 g/mol
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Form supplied: 20% solution in water
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Polymer charge: Anionic (carboxylate functionality)
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Solubility: Readily soluble in water
Typical Applications
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Water treatment: Used as a dispersant and scale-control agent to help inhibit mineral deposition and reduce fouling in aqueous systems.
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Detergent and cleaning formulations: Functions as a polymer additive to improve soil dispersion, prevent redeposition, and enhance formulation stability.
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Cosmetic and personal care research: Used as a thickener and emulsion stabilizer in aqueous personal care formulations.
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Industrial dispersions: Applied in pigment, filler, and mineral suspension systems to maintain uniform particle distribution.
FAQs
Common questions about Poly(acrylic acid), sodium salt, 20% solution in water.
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Why is the sodium salt form used instead of poly(acrylic acid)?
The sodium salt form offers improved water solubility and pH stability compared to the acid form, making it easier to incorporate into aqueous systems.
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What role does molecular weight play in performance?
Higher molecular weight PAA-Na typically provides stronger dispersion, water absorption, and viscosity-modifying effects, though formulation behavior can vary with concentration and system chemistry.
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Is this product supplied ready to use?
The material is supplied as a 20% aqueous solution, which can often be diluted or incorporated directly depending on formulation requirements.
