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.
181978
Poly(ethyleneimine) solution
average Mn ~60,000 by GPC, average Mw ~750,000 by LS, 50 wt. % in H2O
Sinonimo/i:
Ethyleneimine polymer solution, PEI
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5 G
CHF 64.40
100 G
CHF 176.00
250 G
CHF 314.00
18 KG
CHF 2’440.00
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Cambia visualizzazione
5 G
CHF 64.40
100 G
CHF 176.00
250 G
CHF 314.00
18 KG
CHF 2’440.00
About This Item
Prodotti consigliati
Tensione di vapore
9 mmHg ( 20 °C)
PM
average Mn ~60,000 by GPC
average Mw ~750,000 by LS
Concentrazione
50 wt. % in H2O
Stringa SMILE
N1CC1
InChI
1S/C2H5N/c1-2-3-1/h3H,1-2H2
NOWKCMXCCJGMRR-UHFFFAOYSA-N
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Categorie correlate
Applicazioni
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]
Stato fisico
Branched polymer
Avvertenze
Warning
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Sens. 1
Codice della classe di stoccaggio
10 - Combustible liquids
Classe di pericolosità dell'acqua (WGK)
WGK 2
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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Certificati d'analisi (COA)
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Are there any details available about the amine group distribution of this polyethyleneimine?
1 answer-
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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?
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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/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?
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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?
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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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