Does CAS 9003-01-4 define one fixed Polyacrylic Acid grade?

No. Polyacrylic Acid is a polymer class, so CAS 9003-01-4 does not fix molecular-weight distribution, active solids, solution form, neutralization degree, viscosity or residual monomer. These parameters must be defined before comparing prices, samples or application performance.

Are Polyacrylic Acid and Sodium Polyacrylate interchangeable?

No. Polyacrylic Acid is the acid form, while Sodium Polyacrylate is a sodium salt with a different neutralization state and commonly a different CAS reference. Confirm acid or salt form, neutralization degree, pH and solids because equal polymer backbone does not ensure equal dosing or compatibility.

What should a Polyacrylic Acid purchase specification include?

Specify molecular-weight average and method, distribution if relevant, active solids, viscosity with temperature and concentration, pH, neutralization degree, residual acrylic acid, water, density, appearance and intended use. State quantity and package, and request the batch COA plus TDS and SDS for the offered grade.

Polyacrylic Acid (PAA) CAS 9003-01-4

Polyacrylic Acid (PAA), CAS 9003-01-4, is a polymer rather than one fixed-molecular-weight substance. For water-treatment, formulation or binder review, match the offered product by active solids, molecular-weight range, viscosity with test conditions, pH, residual acrylic acid and whether it is supplied as a solid or aqueous grade. Sodium Polyacrylate is the corresponding sodium salt where that form is specified.

CAS: 9003-01-4
Synonyms: Polyacrylic acid, PAA, Poly(acrylic acid), Acrylic acid polymer, Polypropenoic acid
Molecular Formula: (C₃H₄O₂)ₙ
Grade: active solids, molecular-weight range, pH and test method, viscosity and test temperature, residual acrylic acid, solid or aqueous form
Package: Container, liner and temperature, freeze or moisture protection depend on the selected solid or aqueous grade.

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Product Description

1 Product Identity and Specification

2 Applications and Grade Selection

3 Storage and Packaging

4 Safety and Documentation

Product Identity and Specification

Item	Information to Confirm
Product Name	Polyacrylic Acid (PAA)
CAS Number	9003-01-4
Molecular Formula	(C₃H₄O₂)ₙ
Molecular Weight	Polymer-dependent
Material Type	Polymer family with a molecular-weight distribution
Grade / Key Specifications	active solids, molecular-weight range, pH and test method, viscosity and test temperature, residual acrylic acid, solid or aqueous form
Available Form	Confirm against the current specification and offered form
Documents	Current COA, TDS and SDS for the offered grade

Applications and Grade Selection

Polyacrylic Acid (PAA) is evaluated for water treatment, formulation and binder applications. Grade selection should be based on active solids, molecular-weight range, pH and test method, viscosity and test temperature, residual acrylic acid, solid or aqueous form and application testing, not on a generic purity, grade or performance claim.

For related water-soluble polymer raw materials, see Polyacrylamide and Anionic Polyacrylamide.

Storage and Packaging

Container, liner and temperature, freeze or moisture protection depend on the selected solid or aqueous grade.

Safety and Documentation

Review the current SDS before handling Polyacrylic Acid (PAA). Confirm hazards, PPE, incompatibilities, emergency measures, transport classification and receiving-site controls for the exact supplied form; the product page is not a substitute for lot and shipment documents.

FAQ - Technical & Supply Chain

Q:
Does CAS 9003-01-4 define one fixed Polyacrylic Acid grade?

A: No. Polyacrylic Acid is a polymer class, so CAS 9003-01-4 does not fix molecular-weight distribution, active solids, solution form, neutralization degree, viscosity or residual monomer. These parameters must be defined before comparing prices, samples or application performance.
Q:
Are Polyacrylic Acid and Sodium Polyacrylate interchangeable?

A: No. Polyacrylic Acid is the acid form, while Sodium Polyacrylate is a sodium salt with a different neutralization state and commonly a different CAS reference. Confirm acid or salt form, neutralization degree, pH and solids because equal polymer backbone does not ensure equal dosing or compatibility.
Q:
What should a Polyacrylic Acid purchase specification include?

A: Specify molecular-weight average and method, distribution if relevant, active solids, viscosity with temperature and concentration, pH, neutralization degree, residual acrylic acid, water, density, appearance and intended use. State quantity and package, and request the batch COA plus TDS and SDS for the offered grade.

Ordering & Documentation

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

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

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

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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