N-Methylpyrrolidone Chemical Name: N-MethylpyrrolidoneSynonyms: 1-Methyl-2-pyrrolidone, NMPCAS NO.:872-50-4Molecular ... , etc..Specifications:AppearanceColorless transparent liquidPurity, %99.8 min.Moisture, %0.05 max.Color, Pt-Co10 max.Refractive index1.466-1.472Applications ... , keep closed tightly after use, and handling gently avoiding leakage. N-Methylpyrrolidone