The viscosity is tested using a Brookfield viscometer.
523925
Poly(acrylic acid) solution
average Mw ~100,000, 35 wt. % in H2O
Synonym(s):
PAA
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About This Item
Linear Formula:
(C3H4O2)n
CAS Number:
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
MDL number:
Pricing and availability is not currently available.
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
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.
1 of 1
This Item | |||
|---|---|---|---|
| density 1.14 g/mL at 25 °C | density 1.15 g/mL at 25 °C | density - | density - |
| concentration 35 wt. % in H2O | concentration 50 wt. % in H2O | concentration - | concentration - |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 100 |
| mol wt average Mw ~100,000 | mol wt average Mw ~2,000 | mol wt average Mv ~450,000 | mol wt average Mv ~1,250,000 |
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signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - STOT SE 3
target_organs
Respiratory system
Storage Class
10 - Combustible liquids
wgk
WGK 1
flash_point_f
212.0 °F - closed cup
flash_point_c
100 °C - closed cup
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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T Inoue et al.
Journal of controlled release : official journal of the Controlled Release Society, 51(2-3), 221-229 (1998-08-01)
An AB block copolymer of oligo(methyl methacrylate) (oMMA) and poly(acrylic acid) (PAAc) has been synthesized. The block copolymer forms micelles in an aqueous medium, as confirmed by a fluorescence probe technique using pyrene. Doxorubicin hydrochloride was incorporated into the micelle
P L Zeeuwen et al.
The Journal of investigative dermatology, 116(5), 693-701 (2001-05-12)
Using serial analysis of gene expression on cultured human keratinocytes we found high expression levels of genes putatively involved in host protection and defense, such as proteinase inhibitors and antimicrobial proteins. One of these expressed genes was the recently discovered
Yanxia Wang et al.
International journal of pharmaceutics, 441(1-2), 170-180 (2012-12-15)
A novel galactose-decorated cross-linked micelles (cl-micelles) with ionic cores using cystamine (Cys) as a biodegradable cross-linker was prepared by using block ionomer complexes of poly(ethylene glycol)-b-poly(2-acryloxyethyl-galactose)-b-poly(acrylic acid) (PEG-b-PAEG-b-PAA) and Ca(2+) (PEG-b-PAEG-b-PAA cl-micelles/Cys). Doxorubicin (DOX) was successfully incorporated into the ionic
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 523925-100ML | 04061832549286 |
| 523925-500ML | 04061838254009 |
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What instrument type of viscometer is used to measure the viscosity in the CoA ( Ubbelohde, rotational, or something else)? At what temperature was this measured, and how do the counts/sec relate to mPa.s?
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How can I determine the shelf life / expiration / retest date of this product?
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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