Steareth-80

INCI: STEARETH-80

CAS Number
9005-00-9 (generic)
Function
Surfactant – emulsifying; very high HLB PEG ether of stearyl alcohol (80 mol EO)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Falls under CIR Steareth group review — safe as used; however, Steareth-80 was not individually named in the original CIR report

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-dioxane residuals; very high ethoxylation degree increases dioxane risk if not properly stripped; limited individual toxicological data

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Steareth-80 safe in cosmetics?

1,4-dioxane residuals; very high ethoxylation degree increases dioxane risk if not properly stripped; limited individual toxicological data The EU classifies Steareth-80 as "permitted". Safety rating: GOOD.

Is Steareth-80 allowed in the EU?

Steareth-80 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Steareth-80 do in cosmetics?

Steareth-80 functions as: Surfactant – emulsifying; very high HLB PEG ether of stearyl alcohol (80 mol EO). It is classified as a cosmetic ingredient in our database. CAS number: 9005-00-9 (generic).

What is the Margin of Safety for Steareth-80?

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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