It is a mixture of partial tri-ester of sorbitol and its mono and di -anhydrides with oleic acid. It is Non-ionic, Lipophillic (Hydrophobic, Oil Loving) surfactant. This ester is also used for preparing water in oil emulsifier for neutral and mildly alkaline and acidic pH systems. It helps to eliminate the oily film normally found after use of water in oil creams.

CAS NO: 26266-58-0

Synonyms: Span 85, emulsifier S85

Molecular Formula : C₆₀H₁₀₈O₈