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Polyoxyethylenesorbitan Monolaurate (Tween 20)
Polyoxyethylenesorbitan Monolaurate (Tween 20)
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| 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. | | | Catalog # | P4379 | | Appearance | Yellow to amber viscous liquid. | | Hydroxyl Number | 96-108 | | Water | 3% | | Residue of Ignition | 0.25% | | Arsenic | 0.0003% | | Heavy Metals | 0.001% | | RNase, DNase | None Detected | | 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 Number | 9005-64-5 | | Important Note | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. |
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