Product name : Sorbitan Stearate

Synonyms :  D-Glucitol, anhydro-, monooctadecanoate; Anhydrosorbitol Stearate; Sorbitan, monooctadecanoate; Sorbitan Monostearate; 

CAS # :  1338-41-6

Items                              Properties
Molecular formula        C₂₄H₄₆O₆
Molar mass                   430.62 g/mol
Melting point                  56 - 58  °C
Boiling point                  > 100 °C
Appearance                  white to tan-colored solids.
Solucility                        soluble in hot water ;soluble in mineral oil and ethyl acetae
Flash point                    > 400 °C
HLB Value                     5
 
Characteristics and Application :

Nonionic surfactants are surface active agents which do not dissociate into ions in aqueous solutions, unlike anionic surfactants which have a negative charge and cationic surfactants which have a positive charge in aqueous solution. Nonionic surfactants are more widely used as detergents than ionic surfactants because anionic surfactants are insoluble in many hard water and cationic surfactants are considered to be poor cleaners. In addition to detergency, nonionic surfactants show excellent solvency, low foam properties and chemical stability. It is thought that nonionic surfactants are mild on the skin even at high loadings and long-term exposure. The hydrophilic group of nonionic surfactants is a polymerized alkene oxide (water soluble polyether with 10 to 100 units length typically). They are prepared by polymerization of ethylene oxide, propylene oxide, and butylene oxide in the same molecule. Depending on the ratio and order of oxide addition, together with the number of carbon atoms which vary the chemical and physical properties, nonionic surfactant is used as a wetting agent, a detergent, or an emulsifier. Nonionic surfactants include alcohol ethoxylates, alkylphenol ethoxylates, phenol ethoxylates, amide ethoxylates, glyceride ethoxylates (soya bean oil and caster oil ethoxylates), fatty acid ethoxylates, and fatty amine ethoxylates. Another commercially significant nonionic surfactants are the alkyl glycosides in which the hydrophilic groups are sugars (polysaccharides).

In cosmetics and personal care products, Sorbitan Stearate is used in a variety of products including skin care products, skin cleansing products, moisturizers, eye makeup and other makeup.Sorbitan Stearate as surfactant - emulsifying agents.

Uses :

Sorbitan Stearate has reported used in the following product types: facial moisturizer/treatment; moisturizer; anti-aging; sunscreen spf 15 and above; foundation; hair color and bleaching; around-eye cream; other products with spf; facial cleanser; anti-itch/rash cream.