Sorbitan monostearate, also known as sorbitan stearate/SMS, is synthesized by the esterification of sorbitan with stearic acid. It has a molecular formula of C24H46O6. At room temperature, this is in the form of a pale-yellow to yellow granular solid. It has a sorbitan monostearate HLB value of 4.7. Sorbitan monolaurate uses such as, keeps moisture of yeasts; enhances oil-water dispersion stability; emulsifies and stabilizes in cosmetic, pharmaceutical, feeds, coating, textile formulations. It is commonly used in combination with polysorbate 60.

CAS NO.: 1338-41-6

E NO.: sorbitan monostearate E491

MOLECULAR FORMULA: C24H46O6

MOLECULAR WEIGHT: 430.61

Technical Information of Sorbitan Monostearate

According to GB13481-2011, other parameters are available upon request.

Parameters Unit standard value

Fatty acid w/% 71~75

sorbitol w/% 29.5~33.5

Acid value mg KoH/g ≤10

saponification value mg KoH/g 147~157

Hydroxyl value mg KoH/g 235~260

Moisture w/% ≤1.5

Arsenic mg/kg ≤3

Pb mg/kg ≤2

Advantages of Sorbitan Monostearate

Versatile application in food formulations (e.g. enhance volume and texture and anti-staling in cakes; act as bloom retardant and flow modifier in chocolate)

Soluble in ethanol, toluene, mineral oil and ethyl acetate at temperatures higher than its melting point

Can be used in food, pharmaceutical, cosmetic, feed and industry

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