323667 Sigma-Aldrich

Poly(acrylic acid)



Related Categories Hydrophilic Polymers, Materials Science, Poly(acrylic acid) (PAA) and Copolymers, Poly(acrylic acid) (PAA) and Solutions, Poly(acrylic acid), Polymethacrylate and Other Acrylic Polymers,
mol wt   average Mw 1800
viscosity   ≤2000 cP
transition temp   Tg 106 °C
storage temp.   2-8°C
InChI   1S/C3H4O2.Na/c1-2-3(4)5;/h2H,1H2,(H,4,5);/q;+1/p-1


General description

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


Applications of PAA may include:
• to study solute diffusion in Polyvinyl alcohol/PAA copolymer hydrogel
• 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
• as thickening agent for adhesives.


5, 100, 250 g in poly bottle

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
What is the appearance of Product 323667, Poly(acrylic acid)?
This product is a powder or crystalline powder and/or chunks.
What is the polydispersity of Product 323667, Poly(acrylic acid)?
Unfortunately, polydispersity has not been determined for this product.
What are the end groups of the polymer Poly(acrylic acid), Product 323667?
Unfortunately, the end groups are not tested for.
What is the tacticity of the polymer Poly(acrylic acid), Product 323667?
This product is atactic.
What solvents is Poly(acrylic acid), Product 323667, soluble in?
This product is soluble in dioxane, ethanol, methanol, and water.
How do I find price and availability?
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What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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