colorless transparent liquid ,widely being used in making pharmaceuticals, textiles, dyes, coating and cosmetics etc.

Physical properties:Molecular formula:C4H7NO Molecular weight:85.10Properties: colorless transparent liquid , Melting point 24.6°C, insoluble in petroleum ether but soluble in water, alcohol, chloroform, benzene, ethyl acetate and carbon disulfide.

spec:

Index	First Grade	Super Grade
Purity(Wt%)	≥99.0	≥99.5
Moisture(Wt%)	≤0.3	≤0.1
Density p25g/ml	1.107-1.115	1.107-1.115
Colority HaZen	≤25	≤20
Refractive index	1.482-1.490	1.482-1.490

Package & storage: Standard iron barrel, Net weight:200kg±0.05.

The product should be sealed and stored in shelter for moistureproof, fireproof,handling gently avoiding leakage.

2-PYRROLIDONE