Accéder au contenu
Merck
Toutes les photos(3)

Key Documents

STS0200

Sigma-Aldrich

TWEEN® 20

greener alternative

viscous liquid

Synonyme(s) :

Monolaurate de polyoxyéthylènesorbitan, Monolaurate de polyéthylèneglycolsorbitan

Se connecterpour consulter vos tarifs contractuels et ceux de votre entreprise/organisme


About This Item

Numéro CAS:
Numéro MDL:
Code UNSPSC :
12161902
Nomenclature NACRES :
NA.28

Description

non-ionic

Niveau de qualité

Pureté

≥40%

Forme

viscous liquid

Poids mol.

~1228

Composition

lauric acid, ≥40% (balance primarily myristic, palmitic, and stearic acids)

Caractéristiques du produit alternatif plus écologique

Use of Renewable Feedstocks
Design for Degradation
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

Concentration

≥40.0% (GC)

Impuretés

≤3.0% water

Indice de réfraction

n20/D 1.468 (lit.)

CMC

0.06 mM (20-25°C)

Pf

98.9 °C

Indice d'acide

≤2.2 mg KOH/g

Indice d'hydroxyle

96‑108 mg KOH/g

Température de transition

cloud point 76 °C

Solubilité

water: 100 mg/mL, clear, faintly yellow to yellow

Densité

1.095 g/mL at 25 °C (lit.)

HLB

16.7

Autre catégorie plus écologique

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

Vous recherchez des produits similaires ? Visite Guide de comparaison des produits

Description générale

ECO TWEEN® 20, also known as Polyoxyethylenesorbitan monolaurate, is a bio-based, nonionic detergent manufactured from a natural fatty acid. This surfactant, derived from natural sources, provides various functional advantages, such as detergency, emulsification, and wetting. Its versatility makes it well-suited for a variety of applications in biochemical and biological research, with common uses including cell lysis, protein extraction, nuclei isolation and cell fractionation.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product is a biobased surfactant and is aligned with the 7th principle of Green Chemistry "Use of Renewable Feedstocks" and the 10th principle "Design for Degradation".

TWEEN 20 is a polyoxyethylene sorbitol ester that belongs to the polysorbate family. It is a nonionic detergent having a molecular weight of 1,225 daltons, assuming 20 ethylene oxide units, 1 sorbitol, and 1 lauric acid as the primary fatty acid. The ethylene oxide subunits are responsible for the hydrophilic nature of the surfactant, while the hydrocarbon chains provide the hydrophobic environment. Sorbitol forms the backbone ring to which the ethylene oxide polymers are attached.

Application

TWEEN 20 has been used as a component of:
  • washing buffer and blocking buffer in Western blotting
  • blocking buffer in immunohistochemistry
  • washing buffer in ELISA (enzyme linked immunosorbent assay)
  • reaction mixture in PCR (polymerase chain reaction)
TWEEN 20 is a nonionic detergent widely used in biochemical applications. It has been used as an emulsifying agent for the preparation of stable oil-in-water emulsions. TWEEN 20 has been used in pre-extraction of membranes to remove peripheral proteins (used at 2% for extraction of membrane-bound proteins).
TWEEN 20 has been used as a blocking agent for membrane based immunoassays at a typical concentration of 0.05%. TWEEN 20 can be used for lysing mammalian cells at a concentration of 0.005 to 0.5%.
Détergent non ionique

Caractéristiques et avantages

  • 100 % Renewable
  • 100 % Bio-based
  • Certified to the USDA BioPreferred Program
  • Lower carbon footprint than petrochemical-based versions
  • High-purity chemical suitable for a wide variety of research applications

Notes préparatoires

TWEEN 20 is miscible in water (100mg/mL), yielding a clear, yellow solution. It is also miscible with alcohol, dioxane, and ethyl acetate. TWEEN 20 is insoluble in liquid paraffin and fixed oils.

Autres remarques

For additional information on our range of Biochemicals, please complete this form.

Informations légales

ECO TWEEN is a registered trademark of Croda Inc.
TWEEN is a registered trademark of Croda International PLC

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

527.0 °F - Pensky-Martens closed cup

Point d'éclair (°C)

275 °C - Pensky-Martens closed cup


Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number

Vous ne trouvez pas la bonne version ?

Si vous avez besoin d'une version particulière, vous pouvez rechercher un certificat spécifique par le numéro de lot.

Déjà en possession de ce produit ?

Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Ethylene and carbon dioxide production by developing strawberries show a correlative pattern that is indicative of ripening climacteric fruit.
Lannetta PM et al
Physiologia Plantarum, 127.2, 247-259 (2006)
Use of tRNA consensus primers to indicate subgroups of Pseudomonas solanacearum by polymerase chain reaction amplification.
Seal SE et al
Applied and Environmental Microbiology, 58(11), 3759-3761 (1992)
Gene expression and immune response kinetics using electroporation-mediated DNA delivery to muscle.
Gr?nevik E et al
The journal of gene medicine, 7(2), 218-227 (2005)
Jennifer Somerfield et al.
Journal of immunology (Baltimore, Md. : 1950), 185(1), 763-768 (2010-06-04)
Biological therapies, even humanized mAbs, may induce antiglobulin responses that impair efficacy. We tested a novel strategy to induce tolerance to a therapeutic mAb. Twenty patients with relapsing-remitting multiple sclerosis received an initial cycle of alemtuzumab (Campath-1H), up to 120
Human hypoblast formation is not dependent on FGF signalling.
Roode M et al
Developmental Biology, 361(2), 358-363 (2012)

Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..

Contacter notre Service technique