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Moumoujus

C14-15 PARETH-8 CARBOXYLIC ACID.

Valuable CAS 119147-75-0 / CLEANSING, SURFACTANT - CLEANSING

A sophisticated anionic surfactant belonging to the ether carboxylate family, designed as a mild alternative to traditional sulfates. It provides exceptional cleansing and emulsification while maintaining the integrity of the skin's moisture barrier.

Summary

Surfactant Cleansing Agent Emulsifying Agent Lime Soap Dispersant

Science

Mechanism of Action

It functions by lowering the surface tension of water to effectively lift and encapsulate oils, dirt, and environmental debris. Due to its large molecular weight—comprising a C14-15 alkyl chain and 8 ethylene oxide units—it does not penetrate the skin as deeply as smaller surfactants, significantly reducing the risk of irritation while preventing 'soap scum' formation in hard water.

Research

Clinical Evidence

High confidence
Effective range 0.1–10%
Optimal

1%

Key findings

  1. 01 Human Repeated Insult Patch Test (HRIPT) results confirmed no evidence of sensitization or irritation across participants.
  2. 02 Rabbit ear comedogenicity assays classified the molecule as non-comedogenic, making it safe for acne-prone skin.
  3. 03 Clinical evaluation at 1.0% concentration demonstrated significant improvements in hair shine and color protection in pearlized formulations.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

As a primary or secondary cleansing agent, this ingredient is typically utilized at concentrations between 1% and 10%. Presence below 0.1% in a rinse-off product suggests it is included for label claims rather than functional cleansing.

The Formula

Formulation

Solubility
Both
Optimal pH 5.5 – 7.5
0 7 14

Stability

Highly stable across a pH range of 2.0 to 12.0; however, it must be neutralized to function effectively as an anionic surfactant. At low pH, it transitions into a non-ionic emulsifier state.

Synergies

  • Sulfate-free surfactant blends
  • Pearlizing agents

Conflicts

  • Unneutralized low pH environments
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Reviewed and confirmed safe by the CIR Expert Panel in 2013 for rinse-off applications at concentrations up to 10%.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

An excellent, high-performance surfactant for precision cleansing that offers the efficacy of an anionic cleanser with the mildness of a non-ionic molecule.

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