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Sigma Aldrich Fine Chemicals Biosciences TWEEN 20, 9005-64-5, MFCD00165986, 500mL
Supplier: Sigma Aldrich Fine Chemicals Biosciences P2287500ML
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.
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