The average molecular weight of this product is approximately 2000 daltons.
323667
Poly(acrylic acid)
Poly(acrylic acid)
Synonym(s):
PAA
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5 G
$65.00
100 G
$151.00
250 G
$282.00
About This Item
Linear Formula:
(C3H4O2)n
CAS Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
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mol wt
72.06 g/mol
viscosity
≤2000 cP
transition temp
Tg 106 °C
storage temp.
2-8°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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This Item | 181285 | 523925 | 306215 |
|---|---|---|---|
| viscosity ≤2000 cP | viscosity 350-2500 cP | viscosity - | viscosity 800-11,000 cP |
| storage temp. 2-8°C | storage temp. - | storage temp. - | storage temp. - |
| mol wt 72.06 g/mol | mol wt average Mv ~450,000 | mol wt average Mw ~100,000 | mol wt average Mv ~1,250,000 |
| transition temp Tg 106 °C | transition temp Tg 106 °C | transition temp - | transition temp Tg 106 °C |
| 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 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.
Application
Applications of PAA may include:
- to study solute diffusion in Polyvinyl alcohol/PAA copolymer hydrogel[1]
- synthesizing poly(N-isopropylacrylamide)-block-PAA copolymer which responds to both temperature and pH stimuli[2]
- in preparing block copolymer of oligo (methyl methacrylate)/PAA for micellar delivery of hydrophobic drugs[3]
- as thickening agent for adhesives.
Storage Class
11 - Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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what's the molecular weight of this product? PAA- 323667
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What is the purity?
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Unfortunately, the purity of this product is not tested.
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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What are the viscosity measurement conditions?
1 answer-
As mentioned in the "Properties" section of the Product Detail Page, the viscosity specification is ≤2000 cP. The viscosity of this product is measured by Brookfield Viscosity method at 25 C. The exact value will be listed on the lot specific Certificate of Analysis.
Please view the sample Certificate of Analysis: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/323667-250GSLCM5381.pdf
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What is the Mw of Product 323667, is it also average Mw ~5,000?
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The average molecular weight of this product is ~2000.
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What are the end groups of the polymer Poly(acrylic acid), Product 323667?
1 answer-
Unfortunately, the end groups are not tested for.
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What is the tacticity of the polymer Poly(acrylic acid), Product 323667?
1 answer-
This product is atactic.
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What solvents is Poly(acrylic acid), Product 323667, soluble in?
1 answer-
This product is soluble in dioxane, ethanol, methanol, and water.
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What is the polydispersity of Product 323667, Poly(acrylic acid)?
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Unfortunately, polydispersity has not been determined for this product.
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