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SODIUM C12-15 PARETH SULFATE.

Valuable CAS 91648-56-5 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Sodium C12-15 Pareth Sulfate is an anionic surfactant employed for its effective cleansing and emulsifying capabilities, efficiently facilitating the removal of oil and dirt from skin and hair. It functions by significantly reducing surface tension, allowing water to interact with and rinse away impurities.

Summary

cleansing emulsifying surfactant

Science

Mechanism of Action

As a primary anionic surfactant, Sodium C12-15 Pareth Sulfate operates by reducing the surface tension between immiscible phases, such as oil and water. This action enables water to mix effectively with oils and dirt, encapsulating them into micelles that can then be easily rinsed from the skin or hair. It also contributes to the stabilization of emulsions within formulations.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 7 – 10
0 7 14

Stability

This ingredient maintains robust stability within alkaline to weak acid pH conditions, specifically between 7 and 10, and performs effectively in hard water. Its water solubility increases with higher ethylene oxide (EO) unit counts. However, it exhibits instability and is prone to hydrolysis in strong acidic environments. It is available as a low-viscosity aqueous solution, simplifying formulation and dosing.

Synergies

  • nonionic surfactants
  • amphoteric surfactants
  • other anionic surfactants

Conflicts

  • strong acid

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Sodium C12-15 Pareth Sulfate is safe for use in cosmetic products when formulated to be non-irritating. Trace amounts of 1,4-dioxane, a manufacturing by-product, may be present; however, the U.S. FDA has determined that the levels observed in cosmetics do not pose a consumer health hazard. It is classified as an anionic surfactant.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Sodium C12-15 Pareth Sulfate is a valuable anionic surfactant for its efficient cleansing and emulsifying actions, though its moderate irritancy potential necessitates careful formulation, particularly for individuals with sensitive skin.

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