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Technical Data Sheet
N-Ethylpyrrolidone (NEP)

Chemical Synonym
  • Ethyl Pyrrolidinone; 1-Ethyl-2-pyrrolidine; Ethyl Pyrrolidone; NEP
  • Industrial electronics
  • Paints & coatings
  • Pharmaceutical chemicals
  • Process solvents

Product Description
N-Ethylpyrrolidone (NEP) is a clear, almost colorless liquid.It can be used for the following applications:

Ethylpyrrolidone can be used as solvent in photoresist stripper formulations.

Ethylpyrrolidone can be used in electrolyte formulations for electrolytic capacitors.

Cryogenic applications
Due to its low freezing point, ethylpyrrolidone is used as solvent in cryogenic reaction conditions.

Ethylpyrrolidone can be used as raw material for the production of several antipsychotics and antibiotics.
Solvent for diclofenac in topical formulations, solvent in acne remedies.
Transdermal transport enhancer.

Lithographic printing
Ethylpyrrolidone can be used in dampening water for lithographic printing plates.

Jet printing ink
Ethylpyrrolidone is used in the formulation of jet printing ink.

Liquid cleaning composition.
Solvent for radical polymerisation inhibitor.
Composition of detergent for liquid crystal cell.

Typical Properties

PropertyTypical Value, Units
Molecular FormulaC6H11NO
Molecular Weight113.16 g/mol
AppearanceColorless liquid
Autoignition Temperature245 °C
Boiling Point212.5 °C
     @ 20°C0.9974 g/cm3
Flash Point 
     Closed Cup90.8 °C
Freezing Point<-120 °C
Octanol-water partition coefficient, log Pow 
     @ 20°C-0.2
Refractive Index 
     @ 20°C1.4652
Surface Tension 
     @ 20°C69 mN/m
Vapor Pressure 
     @ 20°C0.18 hPa
     @ 20°C2.1 mPa·s
Water solubilityMiscible

  • Bulk
  • Steel drums (205 kg net)

NEP (N-Ethyl-Pyrrolidone) is hygroscopic and must be stored in a dry place, preferably in its original packaging.

Carbon steel is adequate for storage of NEP. Stainless steel is preferable if color stability is to be maintained over long periods. For bulk storage a nitrogen atmosphere is necessary to prevent absorption of moisture and discoloration.

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

8/2/2021 2:42:19 PM