Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP)

INCI: ETHYL PYRROLIDONE

CAS Number
2687-91-4
Function
Solvent
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically restricted under 21 CFR, but reproductive toxicity classification warrants exclusion from cosmetics; TSCA listed

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

Prohibited in EU due to reproductive toxicity; restricted in US cosmetics despite lack of specific CFR limitation.

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Concern Level: High

Regulatory Flags

eu_banned_cosmetics eu_cosing_listed

Frequently Asked Questions

Is Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) safe in cosmetics?

Prohibited in EU due to reproductive toxicity; restricted in US cosmetics despite lack of specific CFR limitation. The EU classifies Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) as "prohibited". Safety rating: POOR.

Is Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) allowed in the EU?

Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) do in cosmetics?

Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP) functions as: Solvent. It is classified as a cosmetic ingredient in our database. CAS number: 2687-91-4.

What is the Margin of Safety for Ethyl Pyrrolidone (1-Ethyl-2-Pyrrolidone / NEP)?

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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