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69117 Sigma-Aldrich

1-Methyl-2-pyrrolidinone

purum, absolute, over molecular sieve (H2O ≤0.01%), ≥98.0% (GC)

Synonym: 1-Methyl-2-pyrrolidone, N-Methyl-2-pyrrolidone, NMP

  • CAS Number 872-50-4

  • Empirical Formula (Hill Notation) C5H9NO

  • Molecular Weight 99.13

  •  Beilstein Registry Number 106420

  •  EC Number 212-828-1

  •  MDL number MFCD00003193

  •  PubChem Substance ID 24885884

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Properties

vapor density   3.4 (vs air)
vapor pressure   0.29 mmHg ( 20 °C)
  0.99 mmHg ( 40 °C)
InChI Key   SECXISVLQFMRJM-UHFFFAOYSA-N
grade   absolute
  purum
assay   ≥98.0% (GC)
autoignition temp.   518 °F
quality   over molecular sieve (H2O ≤0.01%)
expl. lim.   9.5 %
refractive index   n20/D 1.47(lit.)
  n20/D 1.471
bp   202 °C(lit.)
  81-82 °C/10 mmHg(lit.)
mp   −24 °C (lit.)
solubility   water: miscible(lit.)
density   1.028 g/mL at 25 °C(lit.)
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
WGK Germany 
1
RTECS 
UY5790000
Flash Point(F) 
195.8 °F
Flash Point(C) 
91 °C
Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

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Peer-Reviewed Papers
15

References

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