Surfactant polysorbate 40 CAS 9005-66-7
Polysorbate 40, also known as Tween 40, is a nonionic surfactant and emulsifier commonly used in the food, pharmaceutical, and cosmetic industries. It is part of a family of chemicals called polysorbates, which are derived from sorbitol and oleic acid. Polysorbate 40 is synthesized by reacting sorbitol with ethylene oxide and then esterifying it with oleic acid.


Polysorbate 40 serves various purposes, including:


Emulsification: It is used to stabilize oil-in-water emulsions, ensuring that oil and water-based ingredients in a product mix and stay mixed. This property makes it a common ingredient in salad dressings, sauces, and various food products to prevent separation.


Dispersion: Polysorbate 40 helps disperse hydrophobic substances, such as essential oils and flavorings, in aqueous solutions, enhancing the overall homogeneity of the product.


Solubilization: In pharmaceuticals and cosmetics, it is used to improve the solubility of certain ingredients, making it easier to incorporate them into formulations.


Foaming: Polysorbate 40 can contribute to the formation and stabilization of foams, which is beneficial in various applications like the production of whipped toppings and mousses.


It's important to note that Polysorbate 40 is generally considered safe for consumption and use in cosmetics when used in accordance with established regulations and guidelines. However, individuals with specific allergies or sensitivities should be cautious, as it can potentially trigger allergic reactions in some cases. Always follow product labeling and consult with a healthcare professional if you have concerns.

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