Polysorbate 85
Polysorbate 85 (CAS: 9005-70-3), also known as Tween 85, is a non-ionic surfactant derived from the ethoxylation of sorbitan trioleate, carrying approximately 20 polyoxyethylene units. Compared with its monoester counterparts, its three oleate chains give it a more lipophilic character, making it especially effective at emulsifying and solubilizing heavy oils and hydrophobic materials in aqueous environments. The compound appears as a clear to slightly hazy oily liquid and is valued for its strong interfacial activity, low toxicity, and excellent compatibility with other surfactants, electrolytes, and formulation ingredients. It is widely used to stabilize oil-in-water emulsions that demand greater lipid-handling capacity, such as certain pharmaceutical, cosmetic, and agrochemical systems. Polysorbate 85 also acts as a wetting, dispersing, and antistatic agent in industrial applications. Its dependable performance and favorable safety profile make it a versatile processing aid for formulators requiring enhanced lipophilic performance.
– Lipophilic Emulsion Systems: Used to emulsify heavy vegetable and mineral oils in pharmaceutical and cosmetic formulations requiring higher lipid-loading capacity.
– Agrochemical Formulations: Employed in emulsifiable concentrates and oil-based crop protection products to ensure stable dispersion and effective spreading on plant surfaces.
– Cosmetics and Personal Care: Applied in rich creams, ointments, and oil-based cleansers to stabilize emulsions and solubilize fragrance and oil-soluble actives.
– Industrial Processing Aid: Functions as a wetting, dispersing, and antistatic agent in textile finishing, pigment production, and polymer emulsion manufacturing.
Product Name: Polysorbate 85
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