Synonyms: 1-Methyl-2-pyrrolidone; N-Methyl-2-pyrrolidone; NMP
Formula: C5H9NO
Formula Weight: 99.13
CAS No.: 872-50-4
Purity: 99.5%
Density: 1.028 g/mL at 25 °C(lit.)
Other Notes: Pure-Pac® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.
Legal Information: Pure-Pac is a registered trademark of Sigma-Aldrich Co. LLC
Packaging: 1, 6 x 1, 2, 4 x 2 L in Sure/Seal™
Packaging: 100, 12 x 100 mL in Sure/Seal™
Packaging: 18 L in Pure-Pac™ 1
Packaging: 50 L in Pure-Pac™ 2
Assay: 99.5%
Autoignition Temp.: 518°F
BP: 202°C(lit.)
Density: 1.028 g/mL at 25°C(lit.)
Expl. Lim.: 9.5 %
Grade: anhydrous
Impurities: <0.005% water
MP: −24°C(lit.)
Refractive Index: n20/D 1.47(lit.)
Vapor Density: 3.4 (vs air)
Vapor Pressure: 0.29 mmHg ( 20°C)