Sodium Octoxynol-9 Sulfate

INCI: SODIUM OCTOXYNOL-9 SULFATE

CAS Number
Not individually assigned (PEG-9 Octyl Phenyl Ether Sulfate, Sodium Salt)
Function
Surfactant – Cleansing; Surfactant – Solubilizing
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes CIR: Safe as used in both rinse-off and leave-on products (no ≤5% restriction – longer chain octoxynols deemed safer)

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Ethoxylated – standard 1,4-dioxane and ethylene oxide residual testing required; historically used at ≤0.5% concentrations; no active current use

⚠️
Concern Level: Low

Frequently Asked Questions

Is Sodium Octoxynol-9 Sulfate safe in cosmetics?

Ethoxylated – standard 1,4-dioxane and ethylene oxide residual testing required; historically used at ≤0.5% concentrations; no active current use The EU classifies Sodium Octoxynol-9 Sulfate as "permitted". Safety rating: GOOD.

Is Sodium Octoxynol-9 Sulfate allowed in the EU?

Sodium Octoxynol-9 Sulfate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sodium Octoxynol-9 Sulfate do in cosmetics?

Sodium Octoxynol-9 Sulfate functions as: Surfactant – Cleansing; Surfactant – Solubilizing. It is classified as a cosmetic ingredient in our database. CAS number: Not individually assigned (PEG-9 Octyl Phenyl Ether Sulfate, Sodium Salt).

What is the Margin of Safety for Sodium Octoxynol-9 Sulfate?

adequate 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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