Polysorbate 60 O/W Emulsifier Liquid CAS NO 9005-67-8 Polysorbate-60 (commonly known as Tween-60) is a non-ionic surfactant prepared by partial esterification of sorbitol and stearic acid, followed by ethoxylation with 20 moles of ethylene oxide. At room temperature, it appears as a yellow viscous liquid with a relative density in the range of 1.06-1.09. The HLB value reaches 14.5, making it a typical oil in water (O/W) emulsifier. It is soluble in warm water, ethanol, and ethyl acetate, but not miscible with mineral oil and vegetable oil. It is widely used in emulsion systems that require long-term stability under different ionic strengths and pH environments.
How It Works
As an
Oil in water emulsifier, polysorbate -60 helps stabilize the formation of lotion by reducing the interfacial tension between oil and water. The hydrophilic ethoxy chain interacts with water, and the lipophilic stearate is embedded in the oil phase to build a tight interface structure, prevent oil droplets from gathering, and achieve a fine dispersed lotion system. In addition to emulsifying function, it can also solubilize essential oil and essence, and improve pigment dispersion in cosmetics. Due to its mild non-ionic properties, it is suitable for the formulation needs of sensitive skin and has become one of the preferred ingredients for skin friendly cosmetics.
Key Advantages
In the cosmetics formula, the emulsifying and dispersing ability of polysorbate -60 is particularly outstanding, which can create a lotion with fine particles and uniform distribution, effectively avoiding stratification. Adding it can optimize the texture and consistency of the product, make face cream, lotion, shampoo, etc. smoother to use, and make them more attractive visually and tactically. In the face of electrolyte environment, it can also maintain viscosity stability and remain reliable in complex formulations. Moreover, whether it is synthetic oil or natural oil, it can be adapted, making the product formulation more flexible. As a non-ionic emulsifier, it can also be well compatible with other surfactants, thickeners such as oleic acid glycerides, and has more room for formulation design.