Polysorbate 80 is manufactured through the ethoxylation of sorbitan monooleate with approximately 20 moles of ethylene oxide. This produces a surfactant with an HLB value of approximately 15. The oleate chain provides a degree of unsaturation that differentiates it functionally from Polysorbate 20 and other saturated-chain polysorbates.
It is an amber-colored, viscous liquid that is highly water-soluble and demonstrates strong oil-in-water emulsifying capabilities. Polysorbate 80 is one of the most widely used emulsifiers in the food industry, particularly valued for its role in ice cream manufacture where it promotes fat destabilization and improves overrun. It also serves as an effective solubilizer for flavors, colors, and nutritional additives in beverage applications.
