Laureth-1

INCI: LAURETH-1

CAS Number
4536-30-5 (specific); also covered under 68439-50-9 (generic C12-14 alcohol ethoxylates)
Function
Emulsifier; surfactant; intermediate for SLES production
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” not restricted under 21 CFR. FDA expects 1,4-dioxane to be removed to the extent possible.

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-dioxane (potential carcinogen) as ethoxylation by-product must test and document below 10 ppm per EU/SCCS recommendation. Low EO count results in stronger irritation potential than higher-EO laureths. Primarily used as a chemical intermediate rather than in finished products.

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Concern Level: High

Frequently Asked Questions

Is Laureth-1 safe in cosmetics?

1,4-dioxane (potential carcinogen) as ethoxylation by-product must test and document below 10 ppm per EU/SCCS recommendation. Low EO count results in stronger irritation potential than higher-EO laureths. Primarily used as a chemical intermediate rather than in finished products. The EU classifies Laureth-1 as "prohibited". Safety rating: MODERATE.

Is Laureth-1 allowed in the EU?

Laureth-1 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Laureth-1 do in cosmetics?

Laureth-1 functions as: Emulsifier; surfactant; intermediate for SLES production. It is classified as a cosmetic ingredient in our database. CAS number: 4536-30-5 (specific); also covered under 68439-50-9 (generic C12-14 alcohol ethoxylates).

What is the Margin of Safety for Laureth-1?

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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