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192023

Sigma-Aldrich

Poly(acrylic acid) partial sodium salt solution

average Mw ~2,000 by GPC, 61-65 wt. % in H2O

Synonym(s):

Acrylic acid-sodium acrylate copolymer, Sodium acrylate-acrylic acid copolymer

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About This Item

CAS Number:
9033-79-8
MDL number:
MFCD00084394
UNSPSC Code:
12162002
PubChem Substance ID:
24851522
NACRES:
NA.23

mol wt

average Mw ~2,000 by GPC

composition

Na, 0.6%

concentration

61-65 wt. % in H2O

refractive index

n20/D 1.442

density

1.2 g/mL at 25 °C

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General description

Sodium salt of poly(acrylic acid) is a superabsorbent polymer. Superabsorbents are composed of crosslinked networks of hydrophilic polymers. It can absorb and retain a large capacity of water based fluids, the release of the absorbed fluids is tough even under an applied pressure. Absorption capacity is inversely proportional to salt concentration and applied load.They are formed via solution or inverse-suspension polymerization techniques. †

Application

Sodium salt of poly (acrylic acid) may be used as a major component of non glare coatings for headlights.It acts as an antiscaling agents.It′s effect of the salt on the crystal (Cu and MS metals) formation was studied. General applications of these superabsorbents are in many fields such as agriculture and horticulture, sanitary goods, sealing composites, component of moisture barrier tapes and coatings, humidity control, gel actuators. and medicine for drug-delivery systems.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves

Certificates of Analysis (COA)

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Synthesis and characterization of chitosan-g-poly (acrylic acid)/attapulgite superabsorbent composites
Zhang J, et al.
Carbohydrate Polymers, 68(2), 367-374 null
Superabsorbent Polymer Materials: A Review
Zohuriaan-Mehr MJ and Kabiri K
Iranian Polymer Journal, 17(6), 451-477 (2008)
Studies on poly (acrylic acid)/attapulgite superabsorbent composite. I. Synthesis and characterization
Li An, et al.
Journal of Applied Polymer Science, 92(3), 1596-1603 (2004)
Study on Na and K salts of PAA as corrosion inhibitors
Mishra S, et al.
J. Sci. Ind. Res., 64, 684-687 (2005)

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