N-Methyl-2-Pyrrolidone
N-Methyl Pyrrolidone, NMP
- CAS
- 872-50-4
- EC
- 212-828-1
- Sectors
- Electronics & Solar PV, Plastics & Polymers
N-Methyl-2-Pyrrolidone (CAS 872-50-4) is a polar aprotic solvent supplied as a colorless or light yellow liquid with an amine odor, miscible with water and most organic solvents, and valued for its high solvency and thermal stability in lithium-ion battery electrolytes, photoresist removal, and polymer processing.
Typical Properties
| Molecular formula | C5H9NO |
|---|---|
| Molecular weight | 99.13 g/mol |
| Appearance | colourless or light yellow liquid with an amine odour |
| Form | Liquid |
| Color | ≤20(APHA) |
| Odor | Slight amine odor |
| Melting point | -25 °C |
| Boiling point | 202 °C @ Press: 760 Torr |
| Density | 1.027 g/cm³ @ Temp: 25 °C |
| Water solubility | >=10 g/100 mL at 20 °C |
| Flash point | 187 °F |
| pH | 8.5-10.0 (100g/l, H2O, 20°C) |
| GHS signal word | Danger · Irritant / harmful, Health hazard |
| HS code | 29339900 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
N-Methyl-2-Pyrrolidone
Applications
Used in lithium-ion battery electrolytes, petrochemical cleaning, and polymer processing. It serves as a solvent for resins, polyimides, and paints. Also employed in electronics manufacturing for photoresist removal.
Safety & Risks
Absorbed through skin; may cause irritation. Handle under ventilation and wear protective gloves.
Packaging
Supplied in 200 kg steel drums or 1,000 L IBC tanks. Store in cool, dry, and well-ventilated conditions.