Factory Large Stock 99.9% N-Methyl-2-Pyrrolidone NMP CAS 872-50-4 with Best Price

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MW: 99.13
CAS: 872-50-4
EINECS: 212-828-1

Chemical properties

Colorless transparent oily liquid with a slight smell of amine. It can be intersoluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon.


N-methyl pyrrolidinone for short, molecular formula: C5H9NO, English: 1-methyl-2-PyrrolidinOne, appearance is colorless to light yellow transparent liquid, with a slight ammonia smell, mismisble with water in any proportion, soluble in ether, acetone and ester, halogenated hydrocarbon, aromatic hydrocarbon and other organic solvents, Almost completely mixed with all solvents Chemicalbook, boiling point 204℃, flash point 91℃, hygroscopic, stable chemical properties, no corrosion to carbon steel, aluminum, slightly corrosive to copper. It has the advantages of low viscosity, good chemical and thermal stability, high polarity, low volatility, infinite miscibility with water and many organic solvents, etc. This product is a micro drug, the allowable limit concentration in the air is 100PP.

Main uses

(1.) Industrial grade:
Lubricating oil refining, lubricating oil antifreeze agent, syngas desulfurization, electronic insulation materials, agricultural herbicides, pesticide additives, PVC tail gas recovery, high-grade coatings, ink, pigment production of additives and dispersants. For example, used to extract aromatics in lubricating oil to achieve the purpose of refining lubricating oil; Because of the greater solubility of NMP resin, as a solvent for resin processing can be specifically used in the manufacture of coatings, floor paint, varnish, composite coating film, integrated circuit enameled wire insulation materials, fiber fabrics and adhesives and other products.

(2. )Ordinary Level:
Extraction and recovery of basic organic materials, such as acetylene extraction and butadiene, isoprene, aromatics and other extraction. It can be used as a solvent to recover acetylene from natural gas or light naphtha pyrolysis gas. As an extractant for separation and recovery of high-purity butadiene from cracking C4 hydrocarbon, the recovery rate is 97%, and the purity of recovered butadiene is 99.7%. As an extractant for recovery of high-purity isoprene from cracking C5 hydrocarbon, the recovery purity of isoprene is 99%. Because of its high solubility and low steam pressure for aromatics, the extraction agent loss rate is low and the recovery rate of aromatics is high.

(3.) Reagent level:
Integrated circuit, hard disk and other requirements of strict control of metal ions and particles of the industry of deoiling, degreasing, dewaxing, polishing, rust prevention, paint, such as photoresist removal liquid, IC semiconductor industry precision instruments, LCD liquid crystal materials, PCB printed circuit board, hard disk cleaning; As well as artificial kidney functional membrane liquid, seawater desalination membrane liquid and other solvents produced by the pharmaceutical industry.


Melting point: −24 °C(lit.)
Boiling point: 202 °C(lit.)
density: 1.028 g/mL at 25 °C(lit.)
vapor density: 3.4 (vs air)
vapor pressure: 0.29 mm Hg ( 20 °C)
refractive index: n20/D 1.479
Fp: 187 °F
storage temp.: 2-8°C
color: ≤20(APHA)
Water Solubility: >=10 g/100 mL at 20 ºC
Sensitive: Hygroscopic

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