N-methyl-pyrrolidone widely used in aromatics extraction, acetylene, alkene, diene purification.

1. Formula: C5H9NO

2. CAS no. : 872-50-4

3. Use:Widely used in aromatics extraction, acetylene, alkene, diene purification, but also for the polymer solvents and polymerization medium, such as polyamide, polyimide, polyphenylene sulphide and other engineering plastics and Kevlar fiber.

4. Technology data:

Molecular weight	99.13
Boiling point	204°C
Flash point	95°C
Refractive index	1.4680-1.4700
Density	1.020-1.040g/cm3
Appearance	colorless or light yellow liquid
Content	≥99%
Water	≤0.5%

N-methyl-pyrrolidone (872-50-4)