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
561223
Poly(4-styrenesulfonic acid) solution
Mw ~75,000, 18 wt. % in H2O
Synonym(s):
PSS
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$73.70
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$73.70
In StockDetails
mol wt
Mw ~75,000
Quality Level
concentration
18 wt. % in H2O
refractive index
n20/D 1.3718
pH
1.55 (25 °C)
viscosity
20 cP(25 °C, Brookfield) (20 rpm)
solubility
H2O: soluble
ethanol: soluble
lower glycols: soluble
methanol: soluble
density
1.11 g/mL at 25 °C
SMILES string
[Ca+2].[S](=O)(=O)([O-])c1c(cccc1)C=C
InChI
1S/C8H8O3S.Ca/c1-2-7-5-3-4-6-8(7)12(9,10)11;/h2-6H,1H2,(H,9,10,11);/q;+2/p-1
InChI key
IJBYVKWTVVYTPL-UHFFFAOYSA-M
1 of 4
This Item | 561258 | 527491 | 527483 |
|---|---|---|---|
| refractive index n20/D 1.3718 | refractive index n20/D ~1.3961 | refractive index n20/D 1.3875 | refractive index n20/D 1.395 |
| viscosity 20 cP(25 °C, Brookfield) (20 rpm) | viscosity ~200 cP(~25 °C, Brookfield) (20 rpm) | viscosity - | viscosity - |
| density 1.11 g/mL at 25 °C | density - | density 1.163 g/mL at 25 °C | density 1.158 g/mL at 25 °C |
| mol wt Mw ~75,000 | mol wt Mw ~200,000 | mol wt average Mw ~1,000,000 | mol wt average Mw ~70,000 |
| concentration 18 wt. % in H2O | concentration 30 wt. % in H2O | concentration 25 wt. % in H2O | concentration 30 wt. % in H2O |
| pH 1.55 (25 °C) | pH 3-4 (25 °C) | pH - | pH - |
Application
Features and Benefits
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Inhalation - Eye Dam. 1 - Skin Corr. 1A
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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How can I determine the shelf life / expiration / retest date of this product?
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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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