N-Methyl-2-pyrrolidone CAS：872-50-4
N-Methyl-2-pyrrolidone (NMP) stands out for its excellent solvent performance and can dissolve a wide range of substances, making it widely used in electronic manufacturing, pharmaceutical production, and the research and development of agricultural preparations.
This solvent features stable chemical properties during processing, with a high boiling point, low decomposition rate, and relatively low toxicity, ensuring safe and reliable application.
In industrial fields, NMP plays a key role in energy storage devices, semiconductor manufacturing, polymerization reactions, and precision cleaning procedures.
It also acts as a highly efficient processing medium, widely applied in the extraction of aromatic hydrocarbons, the dissolution of polymer materials, and the formulation of pesticide and agrochemical products.
N-Methyl-2-pyrrolidone, commonly known as NMP, is a high-performance polar aprotic solvent with low toxicity, high boiling point, and outstanding dissolving power. It features excellent selective solubility and stable chemical properties under various processing conditions.
Widely applied in industrial production, NMP is commonly used for aromatic hydrocarbon extraction, acetylene and unsaturated hydrocarbon purification including olefins and dienes, as well as the dissolution of polyvinylidene fluoride materials and the production of lithium-ion battery electrode pieces.
It also plays an important role in acid gas removal from syngas, lubricant processing, antifreeze products, olefin separation, engineering polymer polymerization, herbicide production, electrical insulation materials, semiconductor chip manufacturing, printed circuit board cleaning, PVC exhaust treatment, special cleaning agents, pigment dispersion, and colorant formulation additives.
Parameters
| Melting point | -24 °C (lit.) |
| Boiling point | 202 °C (lit.) 81-82 °C/10 mmHg (lit.) |
| density | 1.028 g/mL at 25 °C (lit.) |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.29 mm Hg ( 20 °C) |
| refractive index | n20/D 1.479 |
| Fp | 187 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | ethanol: miscible0.1ML/mL, clear, colorless (10%, v/v) |
| form | Liquid |
| pka | -0.41±0.20(Predicted) |
| color | ≤20(APHA) |
| PH | 8.5-10.0 (100g/l, H2O, 20℃) |
| Odor | Slight amine odor |
| PH Range | 7.7 - 8.0 |
| explosive limit | 1.3-9.5%(V) |
| Water Solubility | >=10 g/100 mL at 20 ºC |
| Sensitive | Hygroscopic |
| λmax | 283nm(MeOH)(lit.) |
| Merck | 146,117 |
| BRN | 106420 |
| Dielectric constant | 32.2 |
| Stability: | Stable, but decomposes upon exposure to light. Combustible. Incompatible with strong oxidizing agents, strong acids, reducing agents, bases. |
| InChIKey | SECXISVLQFMRJM-UHFFFAOYSA-N |
| LogP | -0.46 at 25℃ |
| Surface tension | 41.3mN/m at 293.15K |
| CAS DataBase Reference | 872-50-4(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Pyrrolidinone, 1-methyl-(872-50-4) |
| EPA Substance Registry System | N-Methyl-2-pyrrolidone (872-50-4) |
