Synonyms: 1-Methyl-2-pyrrolidone; N-Methyl-2-pyrrolidone; NMP
Formula: C5H9NO
Formula Weight: 99.13
CAS No.: 872-50-4
Purity: 99%
Density: 1.028 g/mL at 25 °C(lit.)
Application: Undergoes condensation reactions with arylthioacetamides1 and methyl salicylates.2 Versatile solvent for water miscible applications.3,4
Legal Information: ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC
Packaging: 1, 6 x 1, 4, 4 x 4 L in glass bottle
Packaging: 20 L in steel drum
Assay: 99%
Autoignition Temp.: 518°F
BP: 202°C(lit.)
Color: APHA: ≤50
Density: 1.028 g/mL at 25°C(lit.)
Expl. Lim.: 9.5 %
Grade: ReagentPlus®
Impurities: ≤0.1% water (Karl Fischer)
MP: −24°C(lit.)
Refractive Index: n20/D 1.47(lit.)
Vapor Density: 3.4 (vs air)
Vapor Pressure: 0.29 mmHg ( 20°C)