What is Sodium Polyacrylate CAS 9003-04-7?

Sodium Polyacrylate, also called PAAS, is a sodium salt polymer of acrylic acid with the repeat-unit formula (C3H3NaO2)n and CAS 9003-04-7. Depending on molecular weight and crosslinking, it can act as a dispersant, thickener, or superabsorbent polymer.

How does molecular weight or crosslinking change the behavior of Sodium Polyacrylate?

Low-molecular-weight linear grades usually act as dispersants and scale inhibitors. High-molecular-weight linear grades thicken aqueous systems, while cross-linked grades become water-swellable superabsorbent polymers rather than soluble thickeners.

Can Sodium Polyacrylate be used as an industrial thickener?

Yes. Its polyelectrolyte character lets it increase viscosity and stabilize water-based systems such as paints, coatings, cleaners, and emulsions. The right molecular weight and neutralization level should be selected for the target rheology.

Which applications require cross-linked Sodium Polyacrylate?

Cross-linked sodium polyacrylate is used where water absorption and retention are important, such as diapers, sanitary products, agricultural water-retention materials, and spill-control or gelling applications. It swells instead of dissolving in water.

Sodium Polyacrylate CAS 9003-04-7

Sodium Polyacrylate, also called PAAS, CAS 9003-04-7, is a water-soluble sodium salt polymer of acrylic acid. Confirm the required molecular weight, grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 9003-04-7
Synonyms: Polyacrylic acid sodium salt, Sodium poly-2-propene-1-oate, Acrylic acid sodium salt polymer, PAAS, Sodium polyacrylate homopolymer
Einecs: 692-137-3
Molecular Formula: (C₃H₃NaO₂)ₙ
Grade: feed additives
Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.

Request a quote

Share:

Product Description

Sodium Polyacrylate CAS 9003-04-7 is a sodium salt polymer of acrylic acid, also known as PAAS, with repeat-unit formula (C3H3NaO2)n and EINECS 692-137-3.

Synonyms: Polyacrylic acid sodium salt; Sodium poly-2-propene-1-oate; Acrylic acid sodium salt polymer; PAAS; Sodium polyacrylate homopolymer.

CAS: 9003-04-7.

Its molecular weight varies widely with grade, from low-weight liquids to high-weight cross-linked powders.

It appears as a white powder or granules, or as a liquid depending on grade.

Low-molecular-weight linear grades act mainly as dispersants and scale inhibitors.

High-molecular-weight linear grades thicken aqueous systems and increase viscosity.

Cross-linked grades provide high water absorption and retention for superabsorbent applications.

In cooling water, boilers and circulating systems, low-MW sodium polyacrylate disperses scale-forming salts and helps prevent deposits.

It is used in paints, coatings, cleaners and detergent systems as a thickener and stabilizer.

Cross-linked sodium polyacrylate is used in diapers, sanitary products and other water-retaining applications.

It is also used as a binder, thickener or stabilizer in selected feed and industrial formulations.

Store in a cool, dry, well-ventilated area in tightly closed containers to prevent moisture pickup.

Protect from moisture and excessive heat to maintain performance.

Confirm appearance, molecular weight, pH, moisture, heavy metals and residual monomer limits as required.

Use dust masks or respirators and eye protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required molecular weight, grade and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sodium Polyacrylate CAS 9003-04-7?

A: Sodium Polyacrylate, also called PAAS, is a sodium salt polymer of acrylic acid with the repeat-unit formula (C3H3NaO2)n and CAS 9003-04-7. Depending on molecular weight and crosslinking, it can act as a dispersant, thickener, or superabsorbent polymer.
Q:
How does molecular weight or crosslinking change the behavior of Sodium Polyacrylate?

A: Low-molecular-weight linear grades usually act as dispersants and scale inhibitors. High-molecular-weight linear grades thicken aqueous systems, while cross-linked grades become water-swellable superabsorbent polymers rather than soluble thickeners.
Q:
Can Sodium Polyacrylate be used as an industrial thickener?

A: Yes. Its polyelectrolyte character lets it increase viscosity and stabilize water-based systems such as paints, coatings, cleaners, and emulsions. The right molecular weight and neutralization level should be selected for the target rheology.
Q:
How is Sodium Polyacrylate used in water treatment and detergents?

A: In cooling water, boilers, and circulating systems, low-MW sodium polyacrylate disperses scale-forming salts and helps prevent deposition. In detergents, it supports soil dispersion and anti-redeposition performance.
Q:
Which applications require cross-linked Sodium Polyacrylate?

A: Cross-linked sodium polyacrylate is used where water absorption and retention are important, such as diapers, sanitary products, agricultural water-retention materials, and spill-control or gelling applications. It swells instead of dissolving in water.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language