Product name: N-Methyl-Pyrrolidone CAS No: 872-50-4 Chemical Formular: C5H9NO Molecular weight: 99. 134 Assay: 99. 8% & 99. 5% Appearance: Colorless and transparent liquid Density (g/ml) :1.020-1.040 Refractive index n20D:1.4680-1.4695 Boiling point: 202C Flash point: 95C Characteristics: Dissolvable in water and many solvents, such as acetaldehyde, ether, acetone, etc. Package: Galvanized iron drum of 200Kgs net weight