The GPC method used to analyze molecular weight for this product is not publicly available. Analytical details beyond those on the Certificate of Analysis are considered proprietary.
Fortfahren mit
181978
Polyethylenimin -Lösung
average Mn ~60,000 by GPC, average Mw ~750,000 by LS, 50 wt. % in H2O
Synonym(e):
Ethylenimin-Polymer -Lösung, PEI
Anmelden zur Ansicht der Organisations- und Vertragspreise.
Größe auswählen
Ansicht ändern
| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
5 g | Warenkorb auf Verfügbarkeit prüfen | € 51,30 |
100 g | Warenkorb auf Verfügbarkeit prüfen | € 120,00 |
250 g | Warenkorb auf Verfügbarkeit prüfen | € 243,00 |
18 kg | Warenkorb auf Verfügbarkeit prüfen | € 1.960,00 |
Über diesen Artikel
CAS-Nummer:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
Technischer Dienst
Benötigen Sie Hilfe? Unser Team von erfahrenen Wissenschaftlern ist für Sie da.
Unterstützung erhaltenvapor pressure
9 mmHg ( 20 °C)
Quality Segment
mol wt
average Mn ~60,000 by GPC, average Mw ~750,000 by LS
feature
hydrophilic
concentration
50 wt. % in H2O
SMILES string
N1CC1
InChI
1S/C2H5N/c1-2-3-1/h3H,1-2H2
InChI key
NOWKCMXCCJGMRR-UHFFFAOYSA-N
Application
Detergenzien, Klebstoffe, Wasseraufbereitung, Druckfarben, Farbstoffe, Kosmetika und Papierindustrie, Haftvermittler, Beschichtungsprimer, Fixiermittel, Flockungsmittel, kationische Dispergierungsmittel, Stabilisatoren, Oberflächenaktivatoren, Chelatbildner, Radikalfänger für Aldehyde und Oxide.
Physical form
Verzweigtes Polymer
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description average Mn ~60,000 by GPC, average Mw ~750,000 by LS, 50 wt. % in H2O | description average Mn ~1,200, average Mw ~1300 by LS, 50 wt. % in H2O | description average Mw 1800, 50 wt. % in H2O | description analytical standard, 50 % (w/v) in H2O |
| concentration 50 wt. % in H2O | concentration 50 wt. % in H2O | concentration 50 wt. % in H2O | concentration 50 % (w/v) in H2O |
| mol wt average Mw ~750,000 by LS, average Mn ~60,000 by GPC | mol wt average Mn ~1,200, average Mw ~1300 by LS | mol wt average Mw 1800 | mol wt Mw 750,000, Mn ~60,000 |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| feature hydrophilic | feature hydrophilic | feature hydrophilic | feature - |
| vapor pressure 9 mmHg ( 20 °C) | vapor pressure - | vapor pressure - | vapor pressure - |
Still not finding the right product?
Explore all of our products under Polyethylenimin -Lösung
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Sens. 1
Lagerklasse
10 - Combustible liquids
wgk
WGK 2
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
flash_point_f
Not applicable
flash_point_c
Not applicable
Hier finden Sie alle aktuellen Versionen:
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
-
Could you share the GPC method used to analyse the molecular weight? Thanks.
1 answer-
Helpful?
-
-
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/418/501/product-dating-information-06-25-mk.pdfHelpful?
-
-
Hi, could you please confirm whether the Mw of this product (determined by light scattering) is 750,000 and not 75,000? In other words, does the product have an Mn/Mw ratio of 12.5 or 1.25? Thank you!
1 answer-
The product has a Mw of 750,000 by light scattering.
Helpful?
-
-
Hello, Could you please confirm that all of the PEI products you sell are of branched PEI for molecular weight 60.000?
1 answer-
The PEI products offered with a molecular weight of 60,000 are branched.
Helpful?
-
-
Are there any details available about the amine group distribution of this polyethyleneimine?
1 answer-
Unfortunately, the amine group distribution in this product is not determined or provided in the product documentation. This means that information about the exact ratio of primary, secondary, and tertiary amines in this particular polyethyleneimine may not be available.
Helpful?
-
-
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
Helpful?
-
-
I don't see storage information here. What are the storage recommendations for this product?
1 answer-
This product should be stored in room temperature. Store under inert gas. Please note that this chemical is sensitive to carbon dioxide.
Helpful?
-
-
Product 181978, Poly(ethyleneimine) solution, is listed as a solution but it is sold by weight; is this a solid or a liquid?
1 answer-
This product is a solution of Poly(ethyleneimine) in water. However, this product, like many Sigma-Aldrich products, is weighed into the bottle. If 5 grams of this solution is purchased, approximately 4.62mL will be received.
Helpful?
-
-
I see two molecular weight values reported for Product 181978, Poly(ethyleneimine) solution. Which one is correct?
1 answer-
Both of the approximate molecular weights listed for this product are correct based on the testing methods used by Sigma-Aldrich. However, each molecular weight is determined by a different method. The Mn refers to the number-average molecular weight (determined by GPC) while the Mw refers to the weight-average molecular weight (determined by Light Scattering). These two numbers are different but still related. The polydispersity is the measure of uniformity of the molecules in a polymer sample. A ratio of the weight-average molecular and the number-average molecular weight indicates how uniform the polymer sample is. The greater the ratio the less uniform the polymer molecules.
Helpful?
-
-
What possible impurities are present in Product 181978, Poly(ethyleneimine) solution?
1 answer-
Although Sigma-Aldrich does not currently test for the impurities in this product, 2-aminoethanol and less than 50 ppb of unreacted monomer may be present as a result of the manufacturing process.
Helpful?
-