Oleth-4 (inci)

Authors: Prof. Dr. med. Peter Altmeyer, Prof. Dr. med. Martina Bacharach-Buhles

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Last updated on: 29.10.2020

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Synonym(s)

CAS number: 9004-98-2; PEG-4 oleyl ether; polyethylene (4) oleyol ether

Definition
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Oleth(s)" are the polyoxyethylene ethers of oleyl alcohol, an unsaturated monohydric alcohol with the linear formula CH3(CH2)7CH= CH(CH2)7CH2OH (for comparison see: laurethe as polyoxyethylene ether of lauryl alcohol; stearethe as polyoxyethylene ether of stearyl alcohol, etc.). In the term "oleth", the numbering shown below indicates the average number of ethylene oxide units per mole. For oleth-4 this is 4 ethylene oxide units per mole.

Oleth-4 is used in cosmetic formulations. The polyoxyethylene ether acts as an emulsifier (changes the interfacial tension of liquids like water and oil so that they can be mixed together).

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Emulsifiers;