N-Methylpyrrolidone Chemical Name: N-MethylpyrrolidoneSynonyms: 1-Methyl-2-pyrrolidone, NMPCAS NO.:872-50-4Molecular ... , integrated circuit making, recovery of PVC trail gas, purification agent, dye additive, dispersant, etc..Specifications:AppearanceColorless transparent liquidPurity, %99.8 min ... , keep closed tightly after use, and handling gently avoiding leakage. N-Methylpyrrolidone