Steareth-5

INCI: STEARETH-5

CAS Number
9005-00-9 (generic series)
Function
Surfactant – emulsifying agent (low-to-mid HLB emulsifier)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes CIR-reviewed — safe as used when formulated to be non-irritating

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

1,4-Dioxane by-product risk; potential skin irritation if not properly formulated

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Concern Level: Moderate

Frequently Asked Questions

Is Steareth-5 safe in cosmetics?

1,4-Dioxane by-product risk; potential skin irritation if not properly formulated The EU classifies Steareth-5 as "permitted". Safety rating: GOOD.

Is Steareth-5 allowed in the EU?

Steareth-5 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Steareth-5 do in cosmetics?

Steareth-5 functions as: Surfactant – emulsifying agent (low-to-mid HLB emulsifier). It is classified as a cosmetic ingredient in our database. CAS number: 9005-00-9 (generic series).

What is the Margin of Safety for Steareth-5?

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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