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|Section2= |Section3= }} Sodium laureth sulfate (SLS), or sodium lauryl ether sulfate (SLES), is an anionic detergent and surfactant found in many personal care products (soaps, shampoos, toothpaste etc.). SLES is an inexpensive and very effective foaming agent.〔Kurt Kosswig,"Surfactants" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, 2005, Weinheim. 〕 SLES, SLS, ALS and sodium pareth sulfate are surfactants that are used in many cosmetic products for their cleaning and emulsifying properties. They behave similarly to soap. == Chemical structure == Its chemical formula is CH3(CH2)10CH2(OCH2CH2)''n''OSO3Na. Sometimes the number represented by ''n'' is specified in the name, for example laureth-2 sulfate. The product is heterogeneous in the number of ethoxyl groups, where ''n'' is the mean. It is common for commercial products for ''n''= 3. SLES is prepared by ethoxylation of dodecyl alcohol. The resulting ethoxylate is converted to a half ester of sulfuric acid, which is neutralized by conversion to the sodium salt.〔 The related surfactant sodium lauryl sulfate (also known as sodium dodecyl sulfate or SDS) is produced similarly, but without the ethoxylation step. SLS and ammonium lauryl sulfate (ALS) are commonly used alternatives to SLES in consumer products.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sodium laureth sulfate」の詳細全文を読む スポンサード リンク
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