... ,In the stage of SIEF. 3,Excellent quality. N-Methyl-2-pyrrolidinone N-Methyl-2-pyrrolidinoneChemical name: N-Methyl-2-pyrrolidinone; 1-Methyl-2 ... :-23.6°CBoiling point:202°CFlash point:PH-value(100g/l)at 20°CRefractive index:(nD20)95°C7.5-101.465 ... compound, NMP has such advantages as non-toxicity, high boiling point, low corrosion, high solubility, low viscosity, low volatility and good stability ...