N-Methylpyrrolidone, NMP usage, applications and Sourcing


N-Methylpyrrolidone (NMP)

N-Methylpyrrolidone (NMP) is a solvent, used as a cleaner and degreaser in many applications from paint and coating removal, foam clean up. petro-chemical processing, plastics coatings, agricultural chemicals, precision electronic cleaning and industrial/commercial cleaning. NMP is a very versatile solvent since it is used with and as a co-solvent with water, alcohols and other organic substances.In microelectronics specifically, NMP is often used as a process solvent for  cleaning silicon wafers, removing soldering flux residues from circuit boards.


Synonyms of NMP: NMP, 2 – Methyl – 2 – Pyrrolidone,M Pyrol, Methyl Pyrrolidone, N – Methyl – 2 – Pyrrolidone, N – Methyl Pyrrolidone

Specifications and Technical data

CAS: 872-50-4

Specific Gravity: 1.028

Lb / Gallon: 8.5704

Solubility: Soluble in Water

Odor: Mild Amine Like Odor

Appearance: Colorless Liquid

pH: 8.5 to 10

Evaporation Rate 0.03

Flash Point196°F (91.1°C)

Boiling Point Min399°F (203.9°C)

Freeze Point-10°F (-23.3°C)

Molecular Weight99.13 


When you use NMP, or any chemical, follow health and safety guidelines found on the SDS for the product. Here is an SDS for N-Methylpyrrolidone, also known as 1-methyl-2-pyrrolidone or commonly called NMP.

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