N- methylpyrrolidone, Chinese alias: NMP; 1- methyl-2-pyrrolidone; N- methyl-2-pyrrolidone. Colorless oily liquid, slight amine odor. With water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatics, and castor oil solubility. Low volatility, thermal stability, chemical stability are good, it can be volatile with water vapor. Hygroscopic. Light sensitive. N- methylpyrrolidone in lithium electricity, pharmaceuticals, pesticides, paints, cleaning agents, insulation materials and other widely used in industry. 1, the Chinese name: N- methylpyrrolidone 2, English name: N-Methyl pyrrolidone 3, Chinese alias: NMP; 1- methyl-2-pyrrolidone; N- methyl-4, CAS No: 872-50 -45, molecular formula: C5H9NO 6, Product Description: colorless transparent oily liquid, slight amine odor. With water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatics, and castor oil solubility. Low volatility, thermal stability, chemical stability are good, it can be volatile with water vapor. Hygroscopic. Light sensitive. Median lethal dose (rat, oral) 3.8mg / kg. Density: 1.028 Melting point: -24 ° C Boiling point: 203 ℃, 81-82 ° C / 10 mmHg Flash point: 91 ° C Refractive index n20 / D: 1.47 Application N- methylpyrrolidone in lithium battery, pharmaceuticals, pesticides, paints , cleaning agents, insulation materials and other widely used in industry.