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]
Names
IUPAC name
Octadecanoic acid [(2R,3S,4R)-2-[1,2-bis(1-oxooctadecoxy)ethyl]-4-hydroxy-3-tetrahydrofuranyl] ester
Other names
Sorbitan trioctadecanoate
E492
Anhydrosorbitan tristearate
Anhydrosorbitol tristearate
Span 65
Identifiers
3D model (JSmol)
ECHA InfoCard 100.043.523
EC Number
  • 247-891-4
E number E492 (thickeners, ...)
UNII
  • InChI=1/C60H114O8/c1-4-7-10-13-16-19-22-25-28-31-34-37-40-43-46-49-56(62)65-53-55(67-57(63)50-47-44-41-38-35-32-29-26-23-20-17-14-11-8-5-2)60-59(54(61)52-66-60)68-58(64)51-48-45-42-39-36-33-30-27-24-21-18-15-12-9-6-3/h54-55,59-61H,4-53H2,1-3H3/t54-,55?,59+,60-/m1/s1
  • CCCCCCCCCCCCCCCCCC(=O)OCC([C@@H]1[C@H]([C@@H](CO1)O)OC(=O)CCCCCCCCCCCCCCCCC)OC(=O)CCCCCCCCCCCCCCCCC
Properties
C60H114O8
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).
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Infobox references

See also

References
  1. Sorbitan Tristearate, Joint Expert Committee on Food Additives
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