Customization: | Available |
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CAS No.: | 68585-34-2 |
Formula: | C12h26na2o5s |
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Sodium Laureth Sulfate (SLES)
Chemical Name: Sodium Laureth Sulfate (SLES)
Synonyms: Sodium lauryl ether sulfate, Sodium polyoxyethylene lauryl ether sulfate
CAS Number: 68891-38-3
Description:
Sodium Laureth Sulfate (SLES) is an anionic surfactant widely used in personal care and cleaning products for its foaming, emulsifying, and cleansing properties. It is derived from lauryl alcohol (a 12-carbon fatty alcohol) that undergoes ethoxylation (addition of ethylene oxide) followed by sulfation and neutralization with sodium hydroxide.
Key Features:
Applications:
Commonly found in shampoos, body washes, facial cleansers, toothpaste, and household detergents.
Acts as a primary surfactant to remove oils and dirt while generating rich lather.
Safety:
Generally considered safe in cosmetic formulations at concentrations up to 1-2%.
Mild compared to its non-ethoxylated counterpart, Sodium Lauryl Sulfate (SLS), due to the ethoxylation process, which reduces skin irritation potential.
May cause mild irritation in sensitive individuals; often formulated with soothing agents to mitigate this.
Environmental Impact:
Biodegradable under aerobic conditions, though degradation rates depend on ethoxylation degree.
Related Terms:
SLS vs. SLES: SLES is less irritating than SLS due to the added ethylene oxide groups.
Alternatives: Gentler surfactants like Sodium Lauroyl Sarcosinate or Decyl Glucoside are used in "sulfate-free" products.
Note: SLES is sometimes confused with SLS (Sodium Lauryl Sulfate), but they differ chemically and functionally. SLES is milder and more water-soluble.