Derived from the generic term polysorbates, Tweens are composed of fatty acid esters of polyoxyethylene sorbitan, exhibiting amphipathic properties due to their hydrophilic and lipophilic regions. The numbers following "Tween" indicate the degree of ethoxylation, which is the number of ethylene oxide units added to the sorbitan ester molecule during its synthesis. Characterized by their versatility, Tween surfactants are prized for their emulsifying, solubilizing, stabilizing, and dispersing properties. Learn more: https://surfactant.alfa-chemistry.com/peregal-series.html