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C12-13 PARETH-12 CARBOXYLIC ACID.

Valuable CAS 70750-17-3 / CLEANSING, SURFACTANT - CLEANSING

A gentle anionic surfactant that delivers effective cleansing while significantly reducing irritation compared to traditional sulfates. Its unique polyethylene glycol-modified structure creates a bulky molecular head that limits skin penetration, making it ideal for sensitive skin formulations.

Mild surfactant Cleansing agent Emulsifier Irritation reducer Fragrance solubilizer

Science

Functions through its distinctive alkyl ether carboxylic acid structure, where a carboxylate group is separated from the alkyl chain by 11-12 polyethylene glycol units. This configuration creates a low critical micelle concentration and reduces stratum corneum penetration, enabling thorough cleansing while preserving the skin barrier and minimizing irritation potential.


Research

High confidence
Effective range 0.1–5%
Optimal

2.5%

Key findings

  1. 01 Demonstrated significant reduction in skin and eye irritation when used as co-surfactant with primary anionic cleansers at 0.5-5.0% concentration
  2. 02 Enhanced fragrance and active ingredient stabilization and deposition at 0.1-3.0% in aqueous systems

Transparency

Not commonly dusted

Not applicable for surfactant ingredients as dusting concerns primarily apply to active compounds


The Formula

Solubility
Water
Optimal pH 3 – 12
0 7 14

Stability

Demonstrates exceptional pH adaptability, functioning as non-ionic surfactant below pH 4.0 and anionic above neutral pH. Maintains stability in hard water and high electrolyte environments.

Synergies

  • Primary anionic surfactants (reduces irritation)
  • Fragrance compounds (enhances solubilization)
  • Sunscreen actives (co-emulsification)

Conflicts

  • Cationic surfactants at specific ratios
  • Strong oxidizing agents

Safety

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

CIR-approved within Alkyl PEG Ethers assessment. Safety established when formulated to minimize irritation potential.


Your Skin

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

Our Assessment

Valuable

An intelligently designed surfactant that achieves effective cleansing while prioritizing skin compatibility through reduced irritation potential.


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References