Description

Sodium Polyacrylate CAS NO 25549-84-2 is a high molecular weight, anionic polymer known for its exceptional water-absorbing and thickening properties. This superabsorbent polymer (SAP) is critical for applications requiring efficient moisture management and rheology control. It is an essential material for manufacturers in the personal care, agriculture, water treatment, and construction industries seeking reliable performance in their formulations.

Application

• Personal Care & Hygiene: A key ingredient in disposable diapers, adult incontinence products, and feminine hygiene items for superior liquid absorption and retention.
• Agriculture & Horticulture: Used as a soil conditioner and water-retaining agent to improve water-holding capacity, reduce irrigation frequency, and enhance plant survival rates.
• Industrial & Construction: Functions as a sealing and waterproofing agent in cables, concrete, and grouts, and as a viscosity modifier in coatings and adhesives.
• Water Treatment: Employed as a flocculant and coagulant aid to clarify wastewater by binding suspended particles for easier removal.
• Packaging: Integrated into desiccant pads and sachets to control humidity and protect moisture-sensitive goods during shipping and storage.
• Textile Processing: Serves as a thickener in pigment printing pastes and dye formulations to achieve precise application and color fastness.

Basic Information

Product Name	Sodium Polyacrylate
CAS No.	25549-84-2
Molecular Formula	(C3H3NaO2)n
Molecular Weight	Varies (High Polymer)
Synonyms	Poly(acrylic acid) sodium salt; Acrylic acid homopolymer sodium salt; SAP (Superabsorbent Polymer); 2-Propenoic acid, homopolymer, sodium salt; PAAS; Sodium poly(acrylate); Acrysol; AquaKeep
EINECS	247-094-1

Quality Control

Our Sodium Polyacrylate is manufactured under a stringent quality management system. Each batch is tested against critical parameters including absorbency capacity, residual monomers, particle size distribution, and pH to ensure consistent performance and reliability. Certificates of Analysis (COA) documenting these specifications are available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White granular powder or beads
Absorbency (0.9% NaCl)	≥ 30 g/g
Moisture Content	≤ 8 %
pH (1% Solution)	6.0 - 8.0
Residual Monomers (AA)	≤ 300 ppm
Particle Size (Mesh)	Customizable (e.g., 20-100 mesh)
Bulk Density	0.5 - 0.8 g/ml

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.