Overview
Sorbitan Monostearate, commonly referred to as Span 60, is a synthetic emulsifier derived from sorbitol and stearic acid. It is widely used in industries requiring stable emulsions, such as food, cosmetics, and pharmaceuticals. Its nonionic nature makes it versatile for blending water and oil phases. As a waxy solid, Span 60 is valued for its ability to improve texture and shelf life in products like baked goods, creams, and ointments. Its safety profile has been endorsed by regulatory bodies, including the FDA and EFSA, for specific applications.
Physical and Chemical Properties
Sorbitan Monostearate exhibits a melting point range of 50-55°C, making it suitable for formulations requiring moderate heat stability. Its solubility profile includes compatibility with oils and limited solubility in polar solvents like ethanol. The compound is insoluble in water but can form stable emulsions when combined with other surfactants. Key chemical properties include its nonionic surfactant behavior, which reduces surface tension between immiscible liquids. This property is critical for creating uniform mixtures in products like margarine, lotions, and drug delivery systems.
Main Applications
In the food industry, Span 60 serves as an emulsifier in items like whipped toppings, chocolate, and ice cream, ensuring smooth textures and preventing ingredient separation. Cosmetic formulations leverage its ability to stabilize creams, lotions, and makeup products. Pharmaceutical applications include its use in ointments and tablets to enhance drug solubility and absorption. Industrial uses extend to lubricants and textile processing, where emulsification is essential.
Safety and Storage
Sorbitan Monostearate is classified as GRAS by the FDA for food applications, with typical usage levels below 1%. However, prolonged exposure to dust may irritate respiratory systems, necessitating proper ventilation during handling. Storage recommendations include keeping the product in sealed containers at temperatures below 30°C to prevent melting or degradation. Bulk procurement should prioritize moisture-resistant packaging to maintain quality.
B2B Procurement Guide
When sourcing Span 60, verify supplier compliance with international standards like USP, FCC, or Ph. Eur. for purity. Request batch-specific CoAs to confirm parameters like acid value and saponification number. For cost efficiency, consider bulk purchases with tiered pricing. Logistics should account for temperature-controlled transport if regional climates exceed storage thresholds. Partner with suppliers offering technical support for formulation challenges.
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