N-ethyl Pyrrolidone

CAS NO.:2687-91-4

Chemical Formula:   C6H11NO

Molecular weight :  113.1g/mol

Density@2:    0.993 g/ml 

Boiling Point:   212C

Melting Point:   -77C

Viscosity@ 25C:   3.5 mPa.s

Structural Formula:

Spefication:

Appearance:         Clear,colorless liquid

APHA:                 50 max.(Pt-Co Color)   

Assay:                99.9% min. (by gas chromatography)

r-Butyrolactone:      0.1%max.   (by gas chromatography)

Amines:                0.1% max.  (by gas chromatography)

Water:                 0.1% max. 

Description:

N-ethylpyrrolidone (NEP) is the lactam of 4-ethylaminobutyric acid and a very weak base. NEP is a chemically stable and powerful polar solvent. These characteristics are highly useful in a variety of chemical reactions where an inert medium is of concern. Despite the stability of NEP, it can also play an active role in certain reactions: hydrolysis, oxidation, condensation, conversion with chlorinating agents, polymerization and o-alkylation, and related reactions.

Application:

lithium ion batteries

photoresist stripper 

epoxy deflashing 

wafer degreasing 

coating developer 

Packing:  200kg per steel drum

Safety:

Care should be used when handling NEP. Skin contact should be avoided. Contact,can resultin irritation; prolonged contact can result in redness and dermatitis. Butylrubber or FEPTeflon gloves are recommended when handlingNEP. A good skincream should be used afterwashing the affected area. As with all solvents, theworkplace should be well ventilated andsafety goggles must be worn.

Storage and Handling:

 NEP has an almost unlimited shelf life in sealed containers when properly stored in a protected storage area in original unopened containers or protected from moisture. It is neither explosive nor spontaneously flammable in air. However, it is combustible. When ignited, NEP will sustain a fire. All types of fire extinguishers are effective against NEP fires