N-Methyl-2-pyrrolidone
Solvent Characteristics: N-Methyl-2-pyrrolidone (NMP) demonstrates effective solvation properties for diverse materials, supporting its implementation in electronics manufacturing, pharmaceutical processing, and agricultural formulation development.
Stability Profile: The solvent maintains chemical integrity under processing conditions, combining elevated boiling characteristics with minimal decomposition tendencies and comparatively low toxicity parameters.
Industrial Implementation: NMP serves critical functions in energy storage systems, semiconductor fabrication, polymerization processes, and precision cleaning operations across multiple technological sectors.
Extraction and Processing Utility: The compound functions as an efficient medium for aromatic hydrocarbon recovery, polymeric material dissolution, and agrochemical product formulations.
N-Methyl-2-pyrrolidone (NMP) is a polar aprotic solvent characterized by low toxicological parameters, elevated boiling characteristics, and exceptional dissolution capacity. The solvent combines advantageous selective solvation properties with maintained molecular integrity under processing conditions. Its broad industrial implementation encompasses aromatic hydrocarbon extraction, purification of acetylene and unsaturated hydrocarbons (olefins, dienes), dissolution of polyvinylidene fluoride systems, and formulation of lithium-ion battery electrode components. Additional applications include acid gas removal in synthetic gas streams, lubricant processing and antifreeze formulations, olefin separation technologies, polymerization media for engineering-grade polymers, agricultural herbicide systems, electrical insulation materials, semiconductor microchip fabrication, printed circuit board cleaning protocols, PVC emission control, specialized cleaning formulations, pigment dispersion aids, 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 | 14,6117 |
BRN | 106420 |
Dielectric constant | 32.200000000000003 |
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) |
N-Methyl-2-pyrrolidone (NMP) additionally functions as a dissolution medium for polymeric systems and serves as a reaction environment for polymerization processes, particularly in the production of engineering-grade plastics and aramid fibers. The compound further demonstrates utility in agricultural chemical formulations, pharmaceutical manufacturing processes, and industrial cleaning applications.
