Sodium lauryl sulfate (K12) is white or light yellow powder or liquid with a slight greasy smell. Easily soluble in water, it can reduce the surface tension of aqueous solutions and emulsify oils and fats. It is not sensitive to alkali and hard water, and has good compatibility with anions and non-ions.
About the toxicity and effects of sodium lauryl sulfate (K12):
Sodium lauryl sulfate is an emulsifier and foaming agent often used in cosmetics and industrial cleaning agents. SLS can be found in most body washes, soaps, shampoos, toothpastes, and laundry detergents. Although sodium lauryl sulfate is derived from coconut oil, it can be contaminated with toxic by-products during processing.
Chemicals related to sodium lauryl sulfate also include sodium lauryl ether sulfate (Sodium laurethsulfate) and ammonium lauryl sulfate (Ammonium laurylsulfate) , they all have similar foaming capabilities, and both have certain health hazards.
The Cosmetic Ingredient Review reports that SLS, SLES and ALS can be irritating at concentrations exceeding 2%, and recommends that cosmetics be used in concentrations of no more than 1%. Undiluted sodium lauryl sulfate can cause skin and eye irritation and can cause nausea, vomiting and diarrhea if ingested.
Sodium lauryl sulfate and sodium lauryl ether sulfate (SLES) are often contaminated with 1,4 dioxane. by-products of the process. In addition to being a potential carcinogen, 1,4dioxane can also have negative effects on the kidneys, liver and central nervous system.
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