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2-Pyrrolidone Pyrrolidone-3D-vdW.png
CAS number 616-45-5 YesY
ChemSpider 11530 YesY
ChEBI CHEBI:36592 YesY
Jmol-3D images Image 1
Molecular formula C4H7NO
Molar mass 85.10 g mol−1
Density 1.116 g/cm³[1]
Melting point 25 °C (77 °F; 298 K)[2]
Boiling point 245 °C (473 °F; 518 K)[1]
MSDS ScienceLab.com
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 129 °C (264 °F) (open cup)[1]
138 °C (280 °F) (closed cup)[2]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

2-Pyrrolidone (2-pyrrolidinone) is an organic compound consisting of a five-membered lactam. It is a colorless liquid used in industrial settings as a high-boiling non-corrosive polar solvent for a wide variety of applications. It is miscible with a wide variety of other solvents including water, ethanol, diethyl ether, chloroform, benzene, ethyl acetate, and carbon disulfide.

2-Pyrrolidone is an intermediate in the manufacture of polymers such as polyvinylpyrrolidone and polypyrrolidone.

A variety of pharmaceutical drugs are 2-pyrrolidone derivatives including:

See also[edit]


  1. ^ a b c Merck Index, 11th Edition, 8027
  2. ^ a b Record in the GESTIS Substance Database from the IFA

External links[edit]