Sodium polyacrylate , averagemw3 million-7 million , 9003-04-7

Synonym(s):
2-propenoic acid, homopolymer, sodium salt;PAA;Poly(acrylic acid), partial sodium salt-graft-poly(ethylene oxide);Poly(sodium acrylate);Sodium polyacrylate

CAS NO.：9003-04-7

Empirical Formula: C3H4O2

Molecular Weight: 72.06

MDL number: MFCD00147949

EINECS: 999-999-2

PRODUCT Properties

• Density: 1.32 g/mL at 25 °C
• refractive index: n20/D 1.43
• storage temp.: 2-8°C
• form: powder
• Specific Gravity: 1.23
• PH Range: 6 - 9
• Hydrolytic Sensitivity: 0: forms stable aqueous solutions
• Stability: Stable, but moisture sensitive.
• InChI: InChI=1S/C3H4O2/c1-2-3(4)5/h2H,1H2,(H,4,5)
• InChIKey: NIXOWILDQLNWCW-UHFFFAOYSA-N
• SMILES: C(=O)(O)C=C
• EPA Substance Registry System: Sodium polyacrylate (9003-04-7)

Description and Uses

Sodium polyacrylate, also known as waterlock, is a sodium salt of poly acrylic acid with the chemical formula [-CH₂-CH(COONa)-]_n and broad application in consumer products. It has the ability to absorb as much as 200 to 300 times its mass in water. Sodium polyacrylate is anionic polyelectrolytes with negatively charged carboxylic groups in the main chain. While sodium neutralized poly acrylic acids are the most common form used in industry, there are also other salts available including potassium, lithium and ammonium.

Absorbent for aqueous-based spills. Retention and slow release aid for water.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H319
• Precautionary statements: P305+P351+P338-P280-P337+P313
• Hazard Codes: Xi
• Risk Statements: 36/37/38-36
• Safety Statements: 26-36
• WGK Germany: 3
• RTECS: WD6826000
• F: 3
• TSCA: Yes
• HS Code: 39069090