Methylpyrrolidone

Description

A colorless liquid with a mild, amine-like odor. Methylpyrrolidone, or MP, is industrially as a Solvent for the extraction of aromatic compounds from lubrication oils. It also dissolves many polymers and old varnishes.

FTIR

Chemical structure

Synonyms and Related Terms

methyl pyrrolidone; 1-methyl-2-pyrrolidinone; n-methyl-2-pyrrolidone; n-methyl-2-butyrolactone; NMP; MP; M-Pyrol

Risks

• Combustible. Flash point = 96C
• Decomposes on burning to produce toxic fumes including nitrogen oxides and carbon monoxide.
• Contact cause severe irritation to eyes and skin.
• ThermoFisher: SDS
• EPA lists methylpyrrolidone as hazardous waste (ignitable, toxic); Concentrations over 10% must be disposed of appropriately

Physical and Chemical Properties

Miscible with water, alcohols, ether, acetone, ethyl acetate, chloroform, benzene and castor oil.

Composition	C5H9NO
CAS	872-50-4
Melting Point	-24.4 C
Density	1.027 g/ml
Molecular Weight	mol. wt. = 99.1
Refractive Index	1.4690
Boiling Point	202 C

Resources and Citations

• The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 6197

• Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993