Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Classified as a reproductive toxicant (Category 1B) under CLP in some jurisdictions (similar to NMP, N-methyl-2-pyrrolidone); considered lower toxicity than NMP but still subject to REACH scrutiny. Skin and eye irritant.. Molecular formula C₆H₁₁NO; colorless liquid; also known as N-Ethyl-2-pyrrolidone (NEP); excellent solvency for resins and polymers; often positioned as a safer NMP alternative.
Regulatory Flags
Frequently Asked Questions
Is Ethyl Pyrrolidone safe in cosmetics?
Classified as a reproductive toxicant (Category 1B) under CLP in some jurisdictions (similar to NMP, N-methyl-2-pyrrolidone); considered lower toxicity than NMP but still subject to REACH scrutiny. Skin and eye irritant.. Molecular formula C₆H₁₁NO; colorless liquid; also known as N-Ethyl-2-pyrrolidone (NEP); excellent solvency for resins and polymers; often positioned as a safer NMP alternative. The EU classifies Ethyl Pyrrolidone as "permitted". Safety rating: MODERATE.
Is Ethyl Pyrrolidone allowed in the EU?
Ethyl Pyrrolidone EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Ethyl Pyrrolidone do in cosmetics?
Ethyl Pyrrolidone functions as: Solvent. CosIng lists it without a specific cosmetic function assignment, but chemically it is used as a high-performance 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?
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.
Compliance Tools
Check Ethyl Pyrrolidone compliance across multiple jurisdictions:
Related Ingredients
Is Ethyl Pyrrolidone in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Ethyl Pyrrolidone in your formulation.