Sodium Ceteth-4 Phosphate

INCI: SODIUM CETETH-4 PHOSPHATE

CAS Number
No single CAS widely published (ethoxylated cetyl alcohol phosphate ester, sodium salt)
Function
Surfactant (emulsifying) — alkyl phosphate ester emulsifier
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted; CIR reviewed alkyl phosphates and concluded safe as used (2014 report)

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Ethoxylated (4 mol EO) — 1,4-dioxane residual testing required; lower ethoxylation degree = lower risk but still requires verification

⚠️
Concern Level: Low

Frequently Asked Questions

Is Sodium Ceteth-4 Phosphate safe in cosmetics?

Ethoxylated (4 mol EO) — 1,4-dioxane residual testing required; lower ethoxylation degree = lower risk but still requires verification The EU classifies Sodium Ceteth-4 Phosphate as "permitted". Safety rating: GOOD.

Is Sodium Ceteth-4 Phosphate allowed in the EU?

Sodium Ceteth-4 Phosphate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sodium Ceteth-4 Phosphate do in cosmetics?

Sodium Ceteth-4 Phosphate functions as: Surfactant (emulsifying) — alkyl phosphate ester emulsifier. It is classified as a cosmetic ingredient in our database. CAS number: No single CAS widely published (ethoxylated cetyl alcohol phosphate ester, sodium salt).

What is the Margin of Safety for Sodium Ceteth-4 Phosphate?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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