85-1370-22　［受注停止］Tween 20 (Polysorbate 20, Polyoxyethylenesorbitan Monolaurate) 4L　CAS No:9005-64-5　P4379

特徴

• 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%.
• 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
• Saponification Value:≤50mg KOH/g
• Residual Solvents (1, 4-Dioxane):≤0.001%
• RNase, DNase:None Detected
• Storage and Stability:Store at RT.