P8341

TWEEN^® 20

Low-peroxide; Low-carbonyls

• Synonim(y): Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate
• Numer CAS: 9005-64-5
• Numer MDL: MFCD00165986
• Kod UNSPSC: 12161900
• NACRES: NA.21

Właściwości

• Poziom jakości: 200
• opis: non-ionic
• Postać: viscous liquid
• masa cząsteczkowa: ~1228
• zanieczyszczenia: ≤0.5 μmol/g Peroxides; ≤1.0 μmol/g Carbonyls; ≤3.0% water
• współczynnik refrakcji: n20/D 1.468 (lit.)
• CMC: 0.06 mM (20-25°C)
• temp. przejścia: cloud point 76 °C
• gęstość: 1.095 g/mL at 25 °C (lit.); 1.1 g/cm³ at 25 °C (lit.)
• HLB: 16.7
• temp. przechowywania: −20°C
• ciąg 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
• Klucz InChI: HMFKFHLTUCJZJO-UHFFFAOYSA-N

Opis

Opis ogólny

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.

Zastosowanie

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%

Non-ionic detergent

Inne uwagi

Preservative Free

Informacje prawne

TWEEN is a registered trademark of Croda International PLC

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Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 10 - Combustible liquids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Temperatura zapłonu (°F): 527.0 °F - Pensky-Martens closed cup
• Temperatura zapłonu (°C): 275 °C - Pensky-Martens closed cup
• Środki ochrony indywidualnej: Eyeshields, Gloves