This product may be stored at room temperature.
P1379
TWEEN® 20
viscous liquid
Synonyme(s) :
Monolaurate de polyoxyéthylènesorbitan, Monolaurate de polyéthylèneglycolsorbitan
About This Item
Produits recommandés
Description
non-ionic
Niveau de qualité
Essai
>40% (GC)
Forme
viscous liquid
Poids mol.
~1228
Composition
lauric acid, ≥40% (balance primarily myristic, palmitic, and stearic acids)
Concentration
≥40.0% (GC)
Technique(s)
DNA extraction: suitable
RNA extraction: suitable
cell culture | mammalian: suitable
protein purification: suitable
Impuretés
≤3.0% water
Indice de réfraction
n20/D 1.468 (lit.)
CMC
0.06 mM (20-25°C)
Indice d'acide
≤2.2 mg/g
Indice d'hydroxyle
96‑108 mg/g
Température de transition
cloud point 76 °C
Densité
1.095 g/mL at 25 °C (lit.)
HLB
16.7
Adéquation
complies for IR spectroscopy
Chaîne SMILES
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
Clé InChI
HMFKFHLTUCJZJO-UHFFFAOYSA-N
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Description générale
Les tensioactifs, qui possèdent à la fois une partie hydrophile et une partie hydrophobe, sont classés en deux grandes catégories : les tensioactifs ioniques, qui se retrouvent sous forme ionique dans l'eau (composés anioniques, cationiques ou ampholytes), et les tensioactifs non ioniques, qui ne forment pas d'ions. Le produit présenté ici est un tensioactif non ionique aux multiples applications, notamment comme agent émulsificateur, dispersant, solubilisant et détergent. Il permet également de solubiliser les protéines membranaires.
Application
- Constituant d′un tampon de lavage et d′un tampon de blocage en western blotting[2]
- Constituant d′un tampon de blocage en immunohistochimie[3]
- Constituant d′un tampon de lavage dans un test ELISA (essai immuno-enzymatique)[4][5]
- Constituant d′un mélange réactionnel en PCR (amplification en chaîne par polymérase)[6]
Il a servi d′agent de blocage dans des tests immunologiques sur membrane, à une concentration typique de 0,05 %. Il peut être employé pour lyser des cellules de mammifères à une concentration de 0,005 % à 0,5 %.
Caractéristiques et avantages
- Tensioactif particulièrement polyvalent pour vos recherches en sciences de la vie et en biochimie.
- Excellent agent de solubilisation, de dispersion et d'émulsification.
- Convient à l'extraction d'ADN et d'ARN, à la culture des cellules de mammifères et à la purification des protéines.
Conditionnement
Chaque kit contient 3 échantillons de 100 ml, chaque échantillon provenant d'un lot de fabrication différent.
Notes préparatoires
Autres remarques
Informations légales
En option
Produit comparable
Souvent commandé avec ce produit
Code de la classe de stockage
10 - Combustible liquids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
527.0 °F - Pensky-Martens closed cup
Point d'éclair (°C)
275 °C - Pensky-Martens closed cup
Équipement de protection individuelle
Eyeshields, Gloves
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Certificats d'analyse (COA)
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Si vous avez besoin d'une version particulière, vous pouvez rechercher un certificat spécifique par le numéro de lot.
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Les clients ont également consulté
Articles
Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.
Protocoles
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?
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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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 percentage of Tween 20 in Product P1379?
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P1379 is not diluted in any solvent. Thus it can be considered "100%" or the "neat" material.
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