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420344

Sigma-Aldrich

Poly(acrylic acid sodium salt)

average Mw ~2,100

Synonym(s):

Poly(sodium acrylate), Sodium polyacrylate

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About This Item

CAS Number:
9003-04-7
MDL number:
MFCD00147949
UNSPSC Code:
12162002
PubChem Substance ID:
24866330
NACRES:
NA.23
Pricing and availability is not currently available.

form

powder

mol wt

average Mw ~2,100

density

0.55 g/mL at 25 °C

SMILES string

[Na+].[O-]C(=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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Related Categories

Application

  • Poly (sodium acrylate) and Poly (acrylic acid sodium) as an eco-friendly corrosion inhibitor of mild steel in normal hydrochloric acid: experimental, spectroscopic and: Examines the effectiveness of poly(acrylic acid sodium salt) as a corrosion inhibitor, providing insights into its protective mechanisms (A Ouass et al., 2021).
  • Synthesis, characterization, and swelling behaviors of salt-sensitive maize bran–poly (acrylic acid) superabsorbent hydrogel: Investigates the synthesis and properties of a superabsorbent hydrogel made from maize bran and poly(acrylic acid), highlighting its swelling behavior and potential applications (M Zhang et al., 2014).
  • Hybrid dual crosslinked polyacrylic acid hydrogels with ultrahigh mechanical strength, toughness and self-healing properties via soaking salt solution: Describes the creation of high-performance polyacrylic acid hydrogels with enhanced mechanical and self-healing properties, suitable for various technological applications (X Li et al., 2017).

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT1049
MKCR5224
MKCR5225
MKCR5222
MKCN2607

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Chunjiao Zhou et al.
Journal of nanoscience and nanotechnology, 13(7), 4627-4633 (2013-08-02)
Poly(acrylic acid) (PAA) coated-Fe3O4 superparamagnetic nano-composites were synthesized through a solvothermal technique by using cheap and environmental friendly iron salts and PAA. Each nano-composite was composed of many small primary nanocrystals. The as-synthesized products were characterized by X-ray diffraction (XRD)
Imran Khimji et al.
Chemical communications (Cambridge, England), 49(13), 1306-1308 (2013-01-11)
The melting temperature of duplex DNA is much higher in polyanions than in non-ionic polymers with similar ionic strength, suggesting an additional electrostatic contribution on top of the excluded volume effect.
Daniel L Miller et al.
The Annals of thoracic surgery, 95(3), 1050-1056 (2013-01-22)
Skeletal chest wall reconstruction can be a challenge, depending on the indication, location, and health of the patient; various materials are available. Recently, biomaterials that are remodelable (bovine pericardium patch; Veritas, Synovis Life Technologies Inc, St Paul, MN) or absorbable
Lei Liu et al.
ACS nano, 7(2), 1368-1378 (2013-01-04)
Hierarchical FeOOH nanostructure array films constructed by different nanosized building blocks can be synthesized at the air-water interface via a bio-inspired gas-liquid diffusion method. In this approach, poly(acrylic acid) (PAA) as a crystal growth modifier plays a crucial role in
Michael Dietzsch et al.
Langmuir : the ACS journal of surfaces and colloids, 29(9), 3080-3088 (2013-02-08)
Scale formation, the deposition of certain minerals such as CaCO3, MgCO3, and CaSO4·2H2O in industrial facilities and household devices, leads to reduced efficiency or severe damage. Therefore, incrustation is a major problem in everyday life. In recent years, double hydrophilic
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Questions

1–4 of 4 Questions  

  1. 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

      Helpful?

  2. 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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  3. Is 2100 the average molecular weight of the sodium salt, or is this the average molecular weight of the poly(acrylic acid) molecules from which the salt was formed?

    1 answer

    1. The weight-average molecular weight expressed as polyacrylic acid for 420344 Poly(acrylic acid sodium salt), as determined by GPC, is 2000.

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  4. Is 2100 the molecular weight of the sodium salt, or is it the molecular weight of the poly(acrylic acid) molecule from which the salt is formed?

    1 answer

    1. The listed average molecular weight of 2,100 is about poly(acrylic acid). Sodium is not included in this measurement.

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