Tween 85

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[ Other Name ] Tween 85; Polysorbate 85; Polyoxyethylene glycol sorbitan trioleate
[ CAS No. ] 9005-70-3
[ Purity ] Saponification Value : 80 - 95 mg KOH/g
[ Appearance ] Light yellow to amber color thick oily substance

[ Function ]
1. Solubilizer:
As a non-ionic surfactant, Polysorbate 85 reduces the surface tension of poorly soluble drugs and enhances their solubility, thereby achieving a solubilizing effect.
2. Emulsifier:
Polysorbate 85 possesses excellent wetting and dispersing properties, enabling it to effectively disperse oil droplets or solid particles in water to form stable emulsions—a process known as emulsification.
3. Stabilizer:
Polysorbate 85 serves as a stabilizer in food and pharmaceutical products; to a certain extent, it inhibits chemical reactions such as oxidation and decomposition, thereby extending the product's shelf life.
4. Solubilizing Aid:
Polysorbate 85 enhances the solubility of certain ingredients within specific matrices, thereby improving the overall performance of the formulation.
5. Surfactant:
Polysorbate 85 improves the interactions between pharmaceutical excipients and biological systems by reducing interfacial tension.
6. Exfoliant:
Polysorbate 85 aids in the removal of aged cells from the skin's surface by softening the stratum corneum.

[ Application ]
1. Cosmetics and Personal Care: 
It facilitates the better blending of oil and water phases in skincare products, imparting a smoother feel to the skin upon application, and also aids in the removal of dirt and impurities.
2. Pharmaceuticals: 
In tablets and oral liquid formulations, it enhances the solubility of poorly soluble drugs, thereby facilitating faster and more efficient absorption by the body.
3. Industrial Lubrication: 
It serves as a rust-inhibiting additive in metalworking fluids.
4. Food Processing: 
It functions as a food additive to aid in emulsification; additionally, it is utilized in the textile industry as a lubricant or antistatic agent.

About Tween 85
Tween 85 is a non-ionic surfactant synthesized from sorbitol and oleic acid; at room temperature, it appears as an amber-colored, viscous liquid. It is widely utilized in the pharmaceutical, cosmetic, and food industries, primarily serving as an emulsifier and solubilizer.
In cosmetic applications, Polysorbate 85 functions as an emulsifier, surfactant, and thickening agent.