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416002

Sigma-Aldrich

Poly(acrylic acid) solution

average Mw ~250,000, 35 wt. % in H2O

Synonym(s):

PAA

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About This Item

Linear Formula:
(C3H4O2)n
CAS Number:
9003-01-4
MDL number:
MFCD00084394
UNSPSC Code:
12162002
PubChem Substance ID:
24866051
NACRES:
NA.23
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form

viscous liquid

mol wt

average Mw ~250,000

concentration

35 wt. % in H2O

refractive index

n20/D 1.395

density

1.150 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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General description

Poly(acrylic acid) solution (PAA) is an anionic polymer that can be synthesized by the free radical polymerization of acrylic acid. It has a swelling nature that tends to absorb and retain the water. Its high ion exchange capacity makes it useful in the formation of membranes.[1][2][3]

Application

PAA can be used for a variety of applications such as gas sensors, electrical devices, and cosmetics.[4][5]

Signal Word

Danger

Hazard Statements

H318,H335,H410

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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Certificates of Analysis (COA)

Lot/Batch Number
STBL4232
SDBB0747
STBL4086
SDBB0682
SDBB0563

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Electrospun fibrous polyacrylic acid membrane-based gas sensors
Ding B, et al.
Sensors and Actuators B, Chemical, 106(1), 477-483 (2005)
Poly (acrylic acid) nanofibers by electrospinning
Kim B, et al.
Materials Letters, 59(7), 829-832 (2005)
Water absorption, retention and the swelling characteristics of cassava starch grafted with polyacrylic acid
Witono JR, et al.
Carbohydrate Polymers, 103(1), 325-332 (2014)
Swelling behavior of acrylic acid hydrogels prepared by gamma-radiation crosslinking of polyacrylic acid in aqueous solution
Jabbari E and Nozari S
European Polymer Journal, 36(12), 2685-2692 (2000)
Fast adsorption of methylene blue on polyacrylic acid-bound iron oxide magnetic nanoparticles
Mak S and Chen D
Dyes and Pigments, 61(1), 93-98 (2004)
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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