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, it is in the form of a pale-yellow to yellow granular solid. It has a sorbitan monostearate HLB  value of 4.7. It has extensive 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
 
Instructions on Use and Storage
STORAGE
Store in cool, dry place in tightly sealed packages, away from heat and light
TRANSPORTATION
Transport as non-dangerous goods
SHELF LIFE
1 year.
Packaging and Shipment
Packaging
25kg/bag (special packaging is available upon request)
Shipment
7-14 days after receiving payment
Port
Guangzhou, Shenzhen, Shanghai, Qingdao etc.
 
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