Sorbitan tristearate

Sorbitan tristearate is a nonionic surfactant. It is variously used as a dispersing agent, emulsifier, and stabilizer, in food and in aerosol sprays. As a food additive, it has the E number E492. Brand names for polysorbates include Alkest, Canarcel, and Span. The consistency of sorbitan tristearate is waxy; its color is light cream to tan.

Sorbitan tristearate[1]
IUPAC name
Octadecanoic acid [(2R,3S,4R)-2-[1,2-bis(1-oxooctadecoxy)ethyl]-4-hydroxy-3-tetrahydrofuranyl] ester
Other names
Sorbitan trioctadecanoate
Anhydrosorbitan tristearate
Anhydrosorbitol tristearate
Span 65
3D model (JSmol)
ECHA InfoCard 100.043.523
EC Number
  • 247-891-4
E number E492 (thickeners, ...)
Molar mass 963.54 g/mol
Appearance Waxy solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

See also


  1. Sorbitan Tristearate, Joint Expert Committee on Food Additives
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