N-methylpyrrolidone CAS Number: 872-50-4
Pharmaceutical Materials 2025-03-02
CAS Number: 872-50-4
Molecular Formula: C5H9NO
Molecular Weight: 99.13 g/mol
Appearance: Colorless transparent liquid
Boiling Point: 202°C Flash Point: 95°C
Usage: Widely used as a solvent in the production of adhesives, paints, fuels, and pharmaceuticals.
N-Methylpyrrolidone (NMP), with the CAS number 872-50-4, is a versatile organic polar solvent. It is a colorless or pale yellow liquid with an amine-like odor. This compound is widely used in various industries due to its excellent solvent properties. It serves as a key solvent in the production of adhesives, paints, fuels, and pharmaceuticals. Additionally, NMP is employed in the polymer industry, particularly in the processing of polymers and in electronic applications. Its chemical stability in neutral solutions and ability to dissolve a wide range of organic and inorganic compounds make it an indispensable component in many synthetic processes.
| Property | Value |
|---|---|
| CAS Number | 872-50-4 |
| Molecular Formula | C5H9NO |
| Molecular Weight | 99.13 g/mol |
| Appearance | Colorless or pale yellow liquid |
| Density | 1.028 g/mL at 25°C |
| Melting Point | -24°C (lit.) |
| Boiling Point | 202°C (lit.) |
| Flash Point | 86.1°C |
| Refractive Index | 1.479 |
| Water Solubility | ≥10 g/100 mL at 20°C |
| Vapor Density | 3.4 (vs air) |
| Chemical Stability | Stable in neutral solutions; hydrolyzes in alkaline or acidic solutions |
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