P8341

TWEEN^® 20

Low-peroxide; Low-carbonyls

• Sinónimos: Monolaurato de sorbitán polietilenglicol, Monolaurato de sorbitán polioxietileno
• Número de CAS: 9005-64-5
• Número MDL: MFCD00165986
• Código UNSPSC: 12161900
• NACRES: NA.21

Propiedades

• Nivel de calidad: 200
• descripción: non-ionic
• Formulario: viscous liquid
• mol peso: ~1228
• impurezas: ≤0.5 μmol/g Peroxides; ≤1.0 μmol/g Carbonyls; ≤3.0% water
• índice de refracción: n20/D 1.468 (lit.)
• CMC: 0.06 mM (20-25°C)
• temperatura de transición: cloud point 76 °C
• densidad: 1.095 g/mL at 25 °C (lit.); 1.1 g/cm³ at 25 °C (lit.)
• HLB: 16.7
• temp. de almacenamiento: −20°C
• cadena 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
• Clave InChI: HMFKFHLTUCJZJO-UHFFFAOYSA-N

Descripción

Descripción general

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.

Aplicación

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%

Detergente no iónico

Otras notas

Preservative Free

Información legal

TWEEN is a registered trademark of Croda International PLC

Información de seguridad

• Código de clase de almacenamiento: 10 - Combustible liquids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): 527.0 °F - Pensky-Martens closed cup
• Punto de inflamabilidad (°C): 275 °C - Pensky-Martens closed cup
• Equipo de protección personal: Eyeshields, Gloves