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C12-14 SEC-PARETH-40.

Valuable CAS 84133-50-6 / EMULSION STABILISING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A highly ethoxylated non-ionic surfactant that excels at creating stable oil-in-water emulsions and solubilizing oils into aqueous systems. Its 40-mole ethoxylation level provides exceptional stability across a wide pH range while maintaining low irritation potential. This versatile emulsifier enables smooth texture and effective ingredient delivery in both cleansing and leave-on formulations.

surfactant emulsifier solubilizer cleansing agent

Science

Functions as a high-HLB emulsifier by reducing interfacial tension between oil and water phases, allowing disparate ingredients to form stable, uniform mixtures. The extensive ethoxylation creates strong hydrophilic properties that facilitate oil-in-water emulsion formation and enable effective solubilization of fragrance oils and other lipophilic actives into water-based formulations.


Research

High confidence
Effective range 0.5–5%
Optimal

2.5%

Key findings

  1. 01 Clinical patch testing demonstrated non-irritating to mildly irritating response in human subjects
  2. 02 Human repeated insult patch tests showed no skin sensitization potential despite eye irritation at undiluted concentrations

Transparency

Not commonly dusted

As a functional emulsifier and solubilizer, this ingredient serves essential formulation purposes rather than marketing appeal, making dusting unlikely.


The Formula

Solubility
Water
Optimal pH 3 – 11
0 7 14

Stability

Demonstrates exceptional stability across acidic and alkaline conditions with resistance to hard water minerals and excellent ionic compatibility.

Synergies

  • anionic surfactants
  • cationic surfactants
  • other non-ionic surfactants

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel approval with requirement for non-irritating formulation. Typical usage ranges 0.5-5% in leave-on products with excellent safety profile when properly formulated.


Your Skin

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

Our Assessment

Valuable

A reliable, well-tolerated emulsifier that enables stable formulations across all skin types with proven safety data.


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