... is White or colorless liquid, one kind of high efficient selective solvent, without toxicity N-Methyl-2-Pyrrolidone NMP is ... White or colorless liquid, one kind of high efficient selective solvent, without toxicity Molecular formula: C5H9NO Molecular weight: 99. ... Properties:White or colorless liquid, one kind of high efficient selective solvent, without toxicity and with high boiling point, low ...