N-Ethylpyrrolidone (NEP)

Chemical Name: N-Ethylpyrrolidone
Synonyms: 1-Ethyl-2-pyrrolidone, NEP
CAS NO.:2687-91-4
Molecular weight :113.1g/mol
Density@25ÿ? 0.993 g/ml
Boiling Point:212ÿ?
Melting Point:-77ÿ?
Viscosity@ 25ÿ?3.5 mPa.s
Chemical Structure:





Formula:C6H11NO
DISCRIPTIONS:
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.
SPECIFICATIONS:
Appearance Clear,colorless liquid
APHA 50 max.(Pt-Co Color)
Assay 99.6% min. (by gas chromatography)
¥Ã-Butyrolactone 0.1%max. (by gas chromatography)
Amines 0.1% max. (by gas chromatography)
Water 0.1% max.

APPLICATIONS:
For higher end,low impurity level applications:
ÿ?lithium ion batteries ÿ?wafer degreasing
ÿ?photoresist stripper ÿ?coating developer
ÿ?epoxy deflashing
PACKING: 200kgs plastic 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 & 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.