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523925

Sigma-Aldrich

Poly(acrylic acid) solution

average Mw ~100,000, 35 wt. % in H2O

Synonym(s):
PAA
Linear Formula:
(C3H4O2)n
CAS Number:
MDL number:
PubChem Substance ID:

mol wt

average Mw ~100,000

Quality Level

concentration

35 wt. % in H2O

density

1.14 g/mL at 25 °C

SMILES string

OC(=O)C=C

InChI

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

InChI key

NNMHYFLPFNGQFZ-UHFFFAOYSA-M

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Poly(acrylic acid) average Mv ~450,000

Sigma-Aldrich

181285

Poly(acrylic acid)

density

1.14 g/mL at 25 °C

density

1.150 g/mL at 25 °C

density

-

density

1.15 g/mL at 25 °C

mol wt

average Mw ~100,000

mol wt

average Mw ~250,000

mol wt

average Mv ~450,000

mol wt

average Mw ~2,000

concentration

35 wt. % in H2O

concentration

35 wt. % in H2O

concentration

-

concentration

50 wt. % in H2O

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

General description

Poly (acrylic acid) (PAA) is hygroscopic, brittle and colorless in nature with Tg at nearly 106oC. At temperatures above 200, up to 250oC, it loses water and becomes an insoluble crosslinked polymer anhydride. Solubility of dried PAA in water increases with rise in temperature. Concentrated solutions of PAA in water are thixotropic in nature.

Application

PAA is used in the preparation of nano-hydroxyapatite polyacrylic acid (Hap/PAAc) biocomposites.†Other probable applications of PAA are: to study solute diffusion in Polyvinyl alcohol/PAA copolymer hydrogels†, synthesizing poly(N-isopropylacrylamide)-block-PAA copolymer which responds to both temperature and pH stimuli†, in preparing block copolymer of oligo (methyl methacrylate)/PAA for micellar delivery of hydrophobic drugs†, and as a thickening agent for adhesives.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

212.0 °F - closed cup

Flash Point(C)

100 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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