432784

Sigma-Aldrich

Sodium Polyacrylate

cross-linked

Synonym(s):
2-propenoic acid, homopolymer, sodium salt, Poly(acrylic acid), partial sodium salt-graft-poly(ethylene oxide)
CAS Number:
MDL number:
Pricing and availability is not currently available.

Quality Level

form

powder (Free-flowing granular)

crosslinking

cross-linked

particle size

90-850 μm

density

0.54 g/mL at 25 °C (lit.)

InChI

1S/C3H4O2.Na/c1-2-3(4)5;/h2H,1H2,(H,4,5);/q;+1/p-1

InChI key

NNMHYFLPFNGQFZ-UHFFFAOYSA-M

Related Categories

General description

Sodium Polyacrylate (ASAP) is an acrylic sodium salt based hydrophilic polymer with carbonyl and sodium as major groups present in the structure. Both groups facilitate the polymeric chain with absorption potential. It can be used as a superabsorbent material as, in the presence of a liquid, the ASAP chain swells and forms a gel substance.

Packaging

250 g in poly bottle
1 kg in poly bottle

Application

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

Features and Benefits

Superabsorbent polymer. Absorbs many times its weight of aqueous fluids.
Absorbs aqueous fluids to give gels which retain fluids under stress. Polymer swells in water but does not dissolve. Amount of aqueous fluid absorbed decreases with increasing salt content.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 1

Certificate of Analysis
Certificate of Origin
Synthesis of self-crosslinking sodium polyacrylate hydrogel and water-absorbing mechanism
Hua F and Qian M
J. Mater. Sci., 36(3), 731-738 (2001)
Biocompatible Polymeric Materials and Tourniquets for Wounds (2010)
Preparation and swelling properties of crosslinked sodium polyacrylate
Liu M and Guo T
Journal of Applied Polymer Science, 82(6), 1515-1520 (2001)

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