This product may be stored at room temperature.
P1379
TWEEN® 20
viscous liquid
Sinonimo/i:
Monolaurato di polietilenglicole sorbitano, Monolaurato di poliossietilene sorbitano
About This Item
Prodotti consigliati
Descrizione
non-ionic
Livello qualitativo
Saggio
>40% (GC)
Stato
viscous liquid
PM
~1228
Composizione
lauric acid, ≥40% (balance primarily myristic, palmitic, and stearic acids)
Concentrazione
≥40.0% (GC)
tecniche
DNA extraction: suitable
RNA extraction: suitable
cell culture | mammalian: suitable
protein purification: suitable
Impurezze
≤3.0% water
Indice di rifrazione
n20/D 1.468 (lit.)
CMC
0.06 mM (20-25°C)
Numero di acido
≤2.2 mg/g
Indice di ossidrile
96‑108 mg/g
Temp. transizione
cloud point 76 °C
Densità
1.095 g/mL at 25 °C (lit.)
HLB
16.7
Compatibilità
complies for IR spectroscopy
Stringa SMILE
CCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO
InChI
1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30)34-19-18-31-20-22(32-15-12-27)26-25(35-17-14-29)23(21-36-26)33-16-13-28/h22-23,25-29H,2-21H2,1H3
HMFKFHLTUCJZJO-UHFFFAOYSA-N
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Descrizione generale
I tensioattivi che presentano porzioni idrofile e porzioni idrofobe ricadono in due categorie principali: tensioattivi ionici, che ionizzano in acqua (anionici, cationi o anfolitici) e tensioattivi non ionici, che non ionizzano. Il prodotto in questione è un tensioattivo non ionico con diverse applicazioni quali l′emulsificazione, la dispersione, la solubilizzazione e l′impiego come detergente. In aggiunta, può fungere da solvente per le proteine di membrana.
Applicazioni
TWEEN 20 è stato usato come agente bloccante per gli immunodosaggi basati sulle membrane alla concentrazione tipica dello 0,05%. TWEEN 20 può essere usato per la lisi delle cellule di mammifero alla concentrazione di 0,005-0,5%.
Caratteristiche e vantaggi
- Tensioattivo molto versatile per la vostra ricerca in life science e biochimica
- Eccellente come solubilizzante, agente disperdente ed emulsificante.
- Indicato per l′estrazione di DNA & RNA, la coltura di cellule di mammifero e la purificazione di proteine
Confezionamento
Ogni kit contiene 3 campioni da 100 mL, ogni campione proviene da un unico lotto.
Nota sulla preparazione
Altre note
Note legali
Comunemente ordinati con questo prodotto
Prodotto comparabile
Raccomandato
Codice della classe di stoccaggio
10 - Combustible liquids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
527.0 °F - Pensky-Martens closed cup
Punto d’infiammabilità (°C)
275 °C - Pensky-Martens closed cup
Dispositivi di protezione individuale
Eyeshields, Gloves
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Certificati d'analisi (COA)
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I clienti hanno visto anche
Articoli
Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.
Protocolli
This page shows how to solubilize membrane proteins with products from Cytiva.
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What is the storage temperature of Tween 20?
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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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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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What is the minimum dilution ratio of Tween20 in Exosome incubating buffer based on CMC level?
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This product is not tested for any specific application. The critical micelle concentration of TWEEN 20 has been reported as 60 milligrams per liter. Please see the link below to review a publication that may be helpful:
https://open.clemson.edu/cgi/viewcontent.cgi?article=5274&context=all_thesesHelpful?
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Please provide the information on product container and material for P1379-500ML TWEEN® 20
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This item is packaged in a 500 ML HDPE Bottle with a red PP cap w/ PTFE liner.
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You state 0.06 mM as the CMC for this product. What is the stock concentration (in Molar) for this product? Alternatively what is the % to reach that 0.06 mM / CMC concentration? Thank you
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The critical micelle concentration (CMC) reported on the product page is a value reported from the literature. This product is a neat or pure liquid. The base molecular weight of this material is 1,225 daltons and the density is 1.095 g/mL. However, this is based on the assumption of 20 ethylene oxide units, 1 sorbitol, and 1 lauric acid. Please see the link below to review the general Tween 20 datasheet, note that the CMC value listed is 60 mg/L.
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/128/958/p9416pis.pdfHelpful?
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What is the grade/agency of Tween 20?
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This product is a research grade TWEEN 20.
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What is the expiry date once opened?
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Long-term stability studies have not been performed, however, providing that the product is stored and handled properly, the expected shelf life is not expected to change. Factors such as improper closure and cross-contamination would certainly impact the overall stability and shelf life.
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The data sheet for my lot says this is 50% pure. Does that mean it is 50% tween 20?
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The 50% is referring to the concentration of lauric acid which occurs in the highest concentration. Fatty acid constituents of this product are determined by transesterification to yield fatty acid methyl esters, which are identified by gas chromatography. Fatty acids that are typically present in the offered Tween products are not a quantitative measurement. These include myristic, palmitic, and stearic acid, for the most part. While the Tween is considered a 'pure' product, the molecular weight is calculated on the assumption of 20 ethylene oxide units, 1 sorbitol, and 1 lauric acid as the primary fatty acid.
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What is the Department of Transportation shipping information for this product?
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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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