Sorbitan Mono Palmitate


A mixture of the partial esters of sorbitol and its mono- and dianhydrides with edible commercial palmitic acid. SMP is a nonionic, mid-range HLB surfactant suggested for use as a w/o or an o/w emulsifier. It is slightly soluble in isopropanol, xylene and liquid paraffin, insoluble in water, and non-toxic.

CAS No.: 26266-57-9

Synonyms: SMP, Span 40, Sorbitan Monopalmitate, emulsifier S40

Molecular Formula: C22H42O6

Structural Formula:

Sorbitan Mono Palmitate

  • Acts as a excellent O/W emulsifier for creams, lotions and pharmaceutical ointments.
  • It is a nonionic surfactant functioning as a stabilizing agent and co-emulsifiers in personal care formulations.
  • It is also used for ethoxilation.
  • It is used as dispersant of printing inks and oils.

Appearance: Waxy Flakes

Odour: Neutral

Color: 8 Max

Acid Value:8.0 max

Saponification Value:140-155 mgKOH/g

Melting point: 45±3℃

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