Sorbitan monooctadecanoate
Sorbitan monooctadecanoate (CAS 1338-41-6), widely recognized as sorbitan monostearate, is a non-ionic surfactant derived from the esterification of sorbitol with stearic acid. This lipophilic compound typically manifests as a cream-colored to tan waxy solid or bead form with a low hydrophilic-lipophilic balance, making it highly effective at stabilizing water-in-oil systems. Its primary function relies on reducing interfacial tension between immiscible phases, thereby preventing coalescence and phase separation in complex mixtures. It exhibits robust compatibility with a wide range of oils, waxes, and other surfactants, rendering it a foundational additive in industrial, agricultural, and consumer formulations.
– Cosmetic and Personal Care Emulsions: Widely used in formulating moisturizing creams, lotions, and sunscreens to act as a primary co-emulsifier and viscosity modifier.
– Agricultural Chemical Formulations: Incorporated into pesticide and herbicide concentrates to improve wetting properties and droplet spread on foliage surfaces.
– Polymer and Plastics Industry: Utilized as an antistatic agent, lubricant, and mold-release agent in processing various thermoplastic resins and packaging films.
Product Name: Sorbitan monooctadecanoate
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