Description

Zinc Polyacrylate CAS NO 25916-47-6 is an inorganic-organic hybrid polymer, specifically the zinc salt of poly(acrylic acid), valued for its unique combination of ionic crosslinking and polymeric properties. This compound is particularly significant for its ability to absorb and retain significant amounts of aqueous fluids, making it a functional material in specialized applications. It is primarily needed by manufacturers in the personal care, medical device, and advanced materials sectors seeking moisture management and gelling agents.

Application

• Superabsorbent Polymers (SAPs): A key component in the formulation of high-performance absorbent cores for hygiene products such as adult incontinence pads and medical wound dressings.
• Personal Care & Cosmetics: Used as a viscosity modifier, stabilizer, and thickener in creams, lotions, and gels, providing enhanced texture and moisture retention.
• Medical Hydrogels: Serves as a base material for advanced wound care hydrogels that maintain a moist healing environment and can be used in drug delivery matrices.
• Industrial Sealants & Adhesives: Functions as a water-absorbing and crosslinking agent in certain specialty sealants and adhesives where moisture control is critical.
• Agriculture & Horticulture: Employed in water-retaining soil amendments and hydrogels to improve water-holding capacity in soils for drought management.
• Specialty Coatings: Acts as an additive in coatings to control rheology and improve film properties, such as in certain water-based paints or protective layers.

Basic Information

Product Name	Zinc Polyacrylate
CAS No.	25916-47-6
Molecular Formula	(C3H3O2)n·Zn
Molecular Weight	Variable (Polymer)
Synonyms	Poly(acrylic acid), zinc salt; Zinc poly(acrylate); Acrylic acid homopolymer, zinc salt; Zinc salt of polyacrylic acid; PA-Zn; 2-Propenoic acid, homopolymer, zinc salt; Zinc crosslinked polyacrylate; Zinc polyacrylate hydrogel
EINECS	Contact for details

Quality Control

Our Zinc Polyacrylate is manufactured under a strict quality management system. Each batch undergoes rigorous testing for critical parameters including identification, assay (zinc content), residual monomers, particle size distribution, and absorbency capacity to ensure consistent performance. Certificates of Analysis (COA) documenting compliance with agreed specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, the product must be stored in a cool, dry place with low humidity. Recommended storage temperature is 15-25°C. Ensure the container is kept sealed when not in use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms
Assay (as Zn)	8.0 - 12.0 %
Free Acrylic Acid	≤ 0.1 %
pH (1% suspension)	6.0 - 8.0
Absorbency (0.9% NaCl)	≥ 25 g/g
Particle Size (Pass 100 mesh)	≥ 95 %
Loss on Drying	≤ 10.0 %

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