Sigma-Aldrich Tween 20

Sigma-Aldrich Tween 20, 500 mL Net Content, 9005-64-5, Liquid Form, Yellow, 7 pH, Boiling Point: >100 deg C, 275 deg C Flash Point, Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate. Tween20 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 - SIAL (Additional S&H Or Hazmat Fees May Apply)