The CAS number for Polyacrylic Acid Sodium Salt (PAAS) is:

PAAS CAS Number

CAS 9003-04-7 (for general polyacrylate sodium, varying molecular weights)

Additional Notes

Molecular Weight Variants:

Low MW (1,000–10,000): Used as a scale inhibitor/dispersant (e.g., in water treatment).

High MW (≥50,000): Used as a thickener (e.g., in detergents or cosmetics).

Other Related CAS Numbers:

Sodium Acrylate Homopolymer: CAS 9003-04-7 (same as PAAS).

Acrylic Acid/Sodium Acrylate Copolymer: CAS 25987-30-8 (for modified versions).

Applications:

Water Treatment: Prevents CaCO₃/Ca₃(PO₄)₂ scaling.

Detergents: Anti-redeposition agent.

Textiles/Paper: Dispersant.

For exact specifications, refer to the supplier’s TDS (Technical Data Sheet) or COA (Certificate of Analysis).