Description

Sodium Polyacrylate, Starch-Grafted is a high-performance, water-absorbing polymer synthesized by grafting polyacrylic acid chains onto a starch backbone. This unique hybrid structure combines the rapid, high-capacity water absorption of synthetic superabsorbents with the biodegradability and cost-effectiveness of natural polysaccharides. It is an essential material for industries requiring sustainable, high-efficiency moisture management and thickening agents.

Application

• Hygiene Products: A key biodegradable component in the absorbent core of diapers, adult incontinence pads, and feminine hygiene products.
• Agriculture & Horticulture: Used as a soil conditioner and water-retaining agent to improve water-holding capacity, reduce irrigation frequency, and enhance seedling survival rates.
• Food Packaging: Employed in absorbent pads for meat, poultry, and seafood trays to control purge and extend shelf life.
• Industrial Waste Treatment: Acts as a flocculant and sludge dewatering agent for treating industrial wastewater and municipal sewage.
• Construction Materials: Incorporated into cementitious mixtures and coatings as a viscosity modifier and internal curing agent to reduce cracking.
• Medical & Wound Care: Utilized in hydrogel dressings for wound exudate management, providing a moist healing environment.
• Cable Water-Blocking: Applied in the powder form within telecommunications and power cables to prevent longitudinal water propagation.

Basic Information

Product Name	Sodium Polyacrylate, Starch-Grafted
CAS No.	68442-56-8
Molecular Formula	(C3H3NaO2)n grafted on (C6H10O5)n
Molecular Weight	Variable polymer
Synonyms	Starch-grafted Sodium Polyacrylate; Superabsorbent Polymer (SAP), Starch-based; Poly(acrylic acid-co-starch), sodium salt; Acrylic acid-starch graft copolymer, sodium salt; Starch-acrylic acid graft polymer; Waterlock polymer; Agricultural superabsorbent; Biodegradable SAP
EINECS	Contact for details

Quality Control

Our Sodium Polyacrylate, Starch-Grafted is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for critical parameters including absorbency under load (AUL), free swell capacity, residual monomers, and particle size distribution. Certificates of Analysis (COA) documenting full specifications are provided with every shipment to ensure traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the original container sealed when not in use to prevent caking and performance degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white free-flowing powder
Absorbency (0.9% NaCl)	≥ 30 g/g
Absorbency Under Load (AUL)	≥ 20 g/g
Moisture Content	≤ 10 %
Particle Size (40-100 mesh)	≥ 90 %
Residual Monomer (Acrylic Acid)	≤ 500 ppm
pH (1% Solution)	6.0 - 8.0
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.