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.
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Kluczowe dokumenty
181978
Poly(ethyleneimine) solution
average Mn ~60,000 by GPC, average Mw ~750,000 by LS, 50 wt. % in H2O
Synonim(y):
Ethyleneimine polymer solution, PEI
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5 G
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100 G
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250 G
686,00 zł
18 KG
8700,00 zł
258,00 zł
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5 G
258,00 zł
100 G
604,00 zł
250 G
686,00 zł
18 KG
8700,00 zł
About This Item
Numer CAS:
Numer MDL:
Kod UNSPSC:
12162002
Identyfikator substancji w PubChem:
NACRES:
NA.23
258,00 zł
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Polecane produkty
ciśnienie pary
9 mmHg ( 20 °C)
Poziom jakości
masa cząsteczkowa
average Mn ~60,000 by GPC
average Mw ~750,000 by LS
stężenie
50 wt. % in H2O
ciąg SMILES
N1CC1
InChI
1S/C2H5N/c1-2-3-1/h3H,1-2H2
Klucz InChI
NOWKCMXCCJGMRR-UHFFFAOYSA-N
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Zastosowanie
Detergents, adhesives, water treatment, printing inks, dyes, cosmetics, and paper industry, adhesion promoter, lamination primer, fixative agent, flocculant, cationic dispersant, stability enhancer, surface activator, chelating agent, scavenger for aldehydes and oxides.
Protein precipitant.[1]
Postać fizyczna
Branched polymer
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Hasło ostrzegawcze
Warning
Zwroty wskazujące rodzaj zagrożenia
Zwroty wskazujące środki ostrożności
Klasyfikacja zagrożeń
Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Sens. 1
Kod klasy składowania
10 - Combustible liquids
Klasa zagrożenia wodnego (WGK)
WGK 2
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
Środki ochrony indywidualnej
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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Dokumenty związane z niedawno zakupionymi produktami zostały zamieszczone w Bibliotece dokumentów.
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Produkty
Gene therapy has become one of the most discussed techniques in biomedical research in recent years.
Professor Yoshiki Katayama (Kyushu University, Japan) discusses recent advances in drug delivery systems and strategies that exploit the EPR effect, with a special focus on stimuli-responsive systems based on novel materials.
Terapia genowa stała się jedną z najczęściej dyskutowanych technik w badaniach biomedycznych w ostatnich latach.
We present an article that discusses two applications in particular; first, using these layers as polyelectrolyte membranes to control permeability.
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Are there any details available about the amine group distribution of this polyethyleneimine?
1 answer-
Helpful?
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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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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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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.
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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.
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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.
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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.
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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