Sorbitan tristearate
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A semisynthetic compound derived from simple sugars and fatty acids. Produced by the reaction of sorbitol and stearic acid, sorbitan monostearate is the only sorbitan ester approved for food use.

Applications include emulsifier for the preparation of water /oil emulsions, emulsifier for insecticides, anti-foaming agent, used in conjunction with polysorbates in oil toppings, cake mixes, etc.

Found in Lancome nail strengthening cream, McDonalds (magarine applied to buns),