Sodium Oleth Sulfate

INCI: SODIUM OLETH SULFATE

CAS Number
27233-34-7
Function
Surfactant—cleansing agent; surfactant—emulsifying agent; foaming agent
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted for cosmetic use; no CIR monograph specific to this ingredient; related alkyl ether sulfates reviewed as safe when formulated to be non-irritating

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

⚠ Potential 1,4-dioxane contamination from ethoxylation — must be vacuum-stripped to ≤10 ppm (NY DEC) or ideally ≤1 ppm . Can be drying/irritating in concentrated rinse-off products. Ensure EO residuals are controlled

⚠️
Concern Level: Moderate

Regulatory Flags

eu_children_restricted

Frequently Asked Questions

Is Sodium Oleth Sulfate safe in cosmetics?

⚠ Potential 1,4-dioxane contamination from ethoxylation — must be vacuum-stripped to ≤10 ppm (NY DEC) or ideally ≤1 ppm . Can be drying/irritating in concentrated rinse-off products. Ensure EO residuals are controlled The EU classifies Sodium Oleth Sulfate as "permitted". Safety rating: MODERATE.

Is Sodium Oleth Sulfate allowed in the EU?

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

What does Sodium Oleth Sulfate do in cosmetics?

Sodium Oleth Sulfate functions as: Surfactant—cleansing agent; surfactant—emulsifying agent; foaming agent. It is classified as a cosmetic ingredient in our database. CAS number: 27233-34-7.

What is the Margin of Safety for Sodium Oleth Sulfate?

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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