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P8341

TWEEN® 20

Low-peroxide; Low-carbonyls

Sinónimos:

Monolaurato de sorbitán polietilenglicol, Monolaurato de sorbitán polioxietileno

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Número CAS:
9005-64-5
MDL number:
MFCD00165986
UNSPSC Code:
12161900
NACRES:
NA.21
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Quality Level

200

description

non-ionic

form

viscous liquid

mol wt

~1228

impurities

≤0.5 μmol/g Peroxides, ≤1.0 μmol/g Carbonyls, ≤3.0% water

refractive index

n20/D 1.468 (lit.)

CMC

0.06 mM (20-25°C)

transition temp

cloud point 76 °C

density

1.095 g/mL at 25 °C (lit.), 1.1 g/cm3 at 25 °C (lit.)

HLB

16.7

storage temp.

−20°C

SMILES string

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

InChI key

HMFKFHLTUCJZJO-UHFFFAOYSA-N

General description

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

Detergente no iónico
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%

Other Notes

Preservative Free

Legal Information

TWEEN is a registered trademark of Croda International PLC

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Clase de almacenamiento

10 - Combustible liquids

wgk

WGK 1

flash_point_f

527.0 °F - Pensky-Martens closed cup

flash_point_c

275 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
0000468327
0000468327
0000468328
0000468328
0000408610

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