Poly(acrylic acid), sodium salt, 35% soln. in water [MW ~ 120,000]

Product Description

Poly(acrylic acid), sodium salt (PAA-Na) is a water-soluble, anionic polymer with carboxylate functionality, supplied as a 35% aqueous solution with an approximate molecular weight of ~120,000. PAA-Na is commonly used as a dispersant for mineral suspensions, a thickener for formulations, and a stabilizer in emulsions. Its sodium salt form offers improved solubility and pH stability, supporting use across a wide range of aqueous formulations. It exhibits excellent water absorption, rheology modification, and dispersion properties, making it a versatile performance additive in many applications.

Key Benefits

• Water-soluble anionic polymer (sodium polyacrylate) supplied as a convenient 35% solution
• Higher molecular weight (~120,000) supports robust viscosity building and rheology control
• Effective dispersant for inorganic/mineral systems and particulate suspensions
• Stabilizes emulsions and helps reduce settling/phase separation in aqueous systems
• Broad formulation utility in water-based products where carboxylate functionality is desired

Typical Applications

• Water Treatment: Used as a scale inhibitor and dispersant to help reduce fouling in pipelines and boilers.
• Detergents: Polymer additive to improve soil dispersion and anti-redeposition performance.
• Cosmetics & Personal Care: Thickener and stabilizer for water-based emulsions and formulations.

Usage Notes

• Dilution: Can be pre-diluted with deionized water to the desired active level and added under agitation.
• Viscosity Behavior: Higher molecular weight grades may provide stronger thickening at comparable actives; adjust use level and mixing conditions to achieve target rheology.
• Compatibility: As an anionic polymer, compatibility may be reduced in the presence of strongly cationic ingredients (e.g., certain quaternary ammonium compounds); evaluate in the intended system.
• Optimization: Performance depends on formulation variables such as pH, ionic strength, and solids loading; run bench trials to determine the best use level.

Handling & Storage

• Keep container tightly closed when not in use to minimize contamination and evaporation.
• Store in a cool, dry area and protect from extreme temperatures (avoid freezing and excessive heat).
• Mix thoroughly before use if any settling is observed.
• Follow standard laboratory/industrial hygiene practices and consult the SDS for safe handling guidance.

FAQs

1. What is Poly(acrylic acid), sodium salt (PAA-Na)?

   PAA-Na is the sodium salt form of poly(acrylic acid), a water-soluble polyelectrolyte with carboxylate groups. In aqueous systems it is widely used for dispersion, viscosity control, and stabilization.

2. What does the higher molecular weight (~120,000) change?

   Compared with lower molecular weight grades, ~120,000 MW PAA-Na generally provides stronger viscosity building and more pronounced rheology modification at similar active levels, which can be useful for thickening and stabilization in water-based formulations.

3. How do I incorporate this 35% solution into my formulation?

   It is commonly added directly or after pre-dilution with water under mixing. The optimal addition method and use level depend on your formulation (pH, salts, solids content, and other additives), so bench testing is recommended.

4. Is PAA-Na compatible with all surfactants and polymers?

   PAA-Na is generally compatible with many nonionic and anionic systems. Strongly cationic components may reduce performance or cause incompatibility due to ionic interactions. Evaluate compatibility in the intended formulation.