Trideceth-50

INCI: TRIDECETH-50

CAS Number
24938-91-8 (generic polymer CAS)
Function
Surfactant – emulsifying; solubilizing agent (very high HLB ~18)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes No specific restriction; CIR concluded safety extends to future alkyl PEG ethers varying only in EO units

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-dioxane / EO residuals (proportionally higher risk with 50 mol EO — more ethoxylation cycles = more opportunity for residual formation); verify residuals testing rigorously

⚠️
Concern Level: Low

Frequently Asked Questions

Is Trideceth-50 safe in cosmetics?

1,4-dioxane / EO residuals (proportionally higher risk with 50 mol EO — more ethoxylation cycles = more opportunity for residual formation); verify residuals testing rigorously The EU classifies Trideceth-50 as "permitted". Safety rating: GOOD.

Is Trideceth-50 allowed in the EU?

Trideceth-50 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Trideceth-50 do in cosmetics?

Trideceth-50 functions as: Surfactant – emulsifying; solubilizing agent (very high HLB ~18). It is classified as a cosmetic ingredient in our database. CAS number: 24938-91-8 (generic polymer CAS).

What is the Margin of Safety for Trideceth-50?

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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