P8341

TWEEN^® 20

Low-peroxide; Low-carbonyls

• Synonyme(s) : Monolaurate de polyoxyéthylènesorbitan, Monolaurate de polyéthylèneglycolsorbitan
• Numéro CAS: 9005-64-5
• Numéro MDL: MFCD00165986
• Code UNSPSC : 12161900
• Nomenclature NACRES : NA.21

Propriétés

• Niveau de qualité: 200
• Description: non-ionic
• Forme: viscous liquid
• Poids mol.: ~1228
• Impuretés: ≤0.5 μmol/g Peroxides; ≤1.0 μmol/g Carbonyls; ≤3.0% water
• Indice de réfraction: n20/D 1.468 (lit.)
• CMC: 0.06 mM (20-25°C)
• Température de transition: cloud point 76 °C
• Densité: 1.095 g/mL at 25 °C (lit.); 1.1 g/cm³ at 25 °C (lit.)
• HLB: 16.7
• Température de stockage: −20°C
• 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

Description

Description générale

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 is widely used in several biochemical applications. It has been used:

• As an emulsifying agent for the preparation of stable oil-in-water emulsions
• In pre-extraction of membranes to remove peripheral proteins (used at 2% for extraction of membrane-bound proteins)
• As a blocking agent for membrane based immunoassays at a typical concentration of 0.05%
• For lysing mammalian cells at a concentration of 0.005 to 0.5%

Détergent non ionique

Autres remarques

Preservative Free

Informations légales

TWEEN is a registered trademark of Croda International PLC

Informations sur la sécurité

• 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
• Équipement de protection individuelle: Eyeshields, Gloves