Tween 20 (Polysorbate 20, Polyoxyethylenesorbitan Monolaurate)

Size

£87.00

SKU:: P4379
Molecular Weight:: 1227.54
Storage Conditions:: RT
Supplier:: United States Biological
CAS Number:: 9005-64-5
Extra Details:: Tween-20 is a polysorbate surfactant whose stability and relative non-toxicity allow it to be used as a detergent and emulsifier in a number of domestic, scientific, and pharmacological applications. It is a polyoxyethylene derivative of sorbitan monolaurate, and is distinguished from the other members in the Tween range by the length of the polyoxyethylene chain. The commercial product contains a range of chemical species. Biological Applications: Tween 20 has a broad range of applications. For example, it is used: to stabilize purified protein derivative (PPD) solution, used in skin testing for tuberculosis exposure, as a blocking agent in immunologic assays, such as Western blots and ELISA and as a solubilizing agent of membrane proteins for lysing mammalian cells, at a concentration of 0.05 to 0.5%. CAS No: 9005-64-5 Synonyms: Polysorbate 20; Polyethylene glycol sorbitan monolaurate Appearance: Yellow to amber viscous liquid. Hydroxyl Number: 96-108 Water (KF): ≤3% Specific Gravity (25°C): 1.080-1.120 Acid Value: ≤2.2mg KOH/g Acidity (Lauric Acid): As Reported Saponification Value: ≤50mg KOH/g RNase, DNase (1.5% and 3%): None Detected Storage and Stability: Store at RT.