Sorbitan monooleate (commercially: Span® 80; Croda International PLC) is a nonionic surfactant and emulsifier widely used in various industries, including food, pharmaceuticals, and cosmetics.

At high concentrations, sorbitan monooleate can increase the viscosity of the emulsion, which can further enhance stability by reducing the movement of dispersed droplets.

[5] When combined with other surfactants, especially those with higher HLB values like Tween 80, sorbitan monooleate can contribute to the overall stability of oil-in-water (O/W) emulsions.

[2] This combination allows for the creation of emulsifying systems with various HLB values, enabling the emulsification of a wide range of oils and waxes.

[7] Approved for use in various food applications, sorbitan monooleate helps improve texture and stability in products like ice cream and salad dressings.