N-Methyl-2-pyrrolidone NMP

N-Methyl-2-pyrrolidone (NMP, CAS 872-50-4) is a high-boiling, polar aprotic solvent with excellent solvency, low volatility and strong compatibility with resins, polymers and specialty chemicals. Widely used in lithium battery processing, coatings, electronics, petrochemicals and pharmaceutical intermediates. Available in industrial and anhydrous grades — request NMP solvent price or contact us for bulk supply.

MF: C5H9NO
MW: 99.13
EINECS: 212-828-1

Properties & Applications & PackagesInquiry

Product Overview

N-Methyl-2-pyrrolidone (also written 1-methyl-2-pyrrolidinone, 1-methyl pyrrolidin-2-one, n-methylpyrrolidone, or methylpyrrolidone) is a clear, water-miscible organic solvent with strong dissolving power and high boiling point. It is commonly abbreviated as NMP, and is widely used in industrial formulations where a stable, high-performance solvent is required.

NMP is a colorless to light yellow transparent liquid with a slight ammonia odor. It is miscible with water in any proportion. It is soluble in ether, acetone and various organic solvents such as esters, halogenated hydrocarbons, and aromatic hydrocarbons. It is completely mixed with almost all solvents. Boiling point 204℃, flash point 91℃, strong hygroscopicity, stable chemical properties, non-corrosive to carbon steel and aluminum, slightly corrosive to copper. It has the advantages of low viscosity, good chemical and thermal stability, high polarity, low volatility, and unlimited miscibility with water and many organic solvents.


Typical Specifications

Melting Point 

-24 °C (lit.)

Boiling Point 

202 °C (lit.) 81-82 °C/10 mmHg (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. 

Store at +5°C to +30°C.

Solubility 

Ethanol: miscible0.1ML/mL, clear, colorless (10%, v/v)

PKA

-0.41±0.20(Predicted)

Form 

Liquid

Color 

≤20(APHA)

Odor

Slight amine odor

PH

8.5-10.0 (100g/l, H2O, 20℃)

PH Range

7.7 - 8.0

Explosive Limit

1.3-9.5%(V)

Water Solubility 

>=10 g/100 mL at 20 ºC


Key Applications

Lithium battery manufacturing: used in electrode slurry processing and binder dissolution.
Coatings & paints: strong solvent for resins, pigments and specialty coatings.
Petrochemical & extraction processes: used as an extraction solvent in refining and gas treatment
Electronics & semiconductor cleaning: precision cleaning and formulation solvent.
Pharmaceutical & fine chemicals: process solvent and intermediate.

N-methylpyrrolidone (NMP) is a polar aprotic solvent. It has low toxicity, high boiling point and excellent solubility. Advantages of strong selectivity and good stability. It is widely used in the extraction of aromatic hydrocarbons, purification of acetylene, olefins, and dienes, solvents for polyvinylidene fluoride, electrode auxiliary materials for lithium-ion batteries, syngas desulfurization, lubricant oil refining, lubricant antifreeze, olefin extraction agents, and difficult-to-use solvents. Solvents used in the polymerization of engineering plastics, agricultural herbicides, insulation materials, integrated circuit production, cleaning of precision instruments and circuit boards in the semiconductor industry, PVC exhaust gas recovery, cleaning agents, dye additives, dispersants, etc. It is also used as a solvent for polymers and a medium for polymerization reactions, such as engineering plastics and aramid fibers. It can also be used in pesticides, medicines and detergents.

The main uses of different grades of N-methylpyrrolidone are listed below:
1. Industrial grade: lubricating oil refining, lubricating oil antifreeze, syngas desulfurization, electronic insulation materials, agricultural herbicides, pesticide additives, PVC exhaust gas recovery, additives and dispersants for the production of high-end coatings, inks, pigments, etc. For example, it is used to extract aromatic hydrocarbons in lubricating oil to achieve the purpose of refining lubricating oil; because NMP has a large solubility in resin, as a solvent for resin processing, it can be specifically used to manufacture coatings, floor paints, varnishes, composite coating films, and integrated circuit enameled wires. Insulating materials, fiber fabrics, adhesives and other products;
2. Normal grade: Extraction and recovery of basic organic raw materials, such as acetylene concentration and extraction of butadiene, isoprene, aromatics, etc. It can be used as a solvent to recover acetylene from natural gas or light naphtha thermal cracking gas, and the purity of recovered acetylene can reach 99.7%; it can be used as an extraction agent to separate and recover high-purity butadiene from cracked C4 hydrocarbons, with a recovery rate of 97 %, the purity of recovered butadiene is 99.7%. It is used as an extraction agent to recover high-purity isoprene from cracked C5 hydrocarbons. The recovery purity of isoprene reaches 99%; when used as an extraction agent for aromatic hydrocarbons, it has high solubility in aromatic hydrocarbons. With low vapor pressure, the extraction agent loss rate is low and the aromatic hydrocarbon recovery rate is high during the process.
3. Reagent grade: deoiling, degreasing, dewaxing, polishing, rust prevention, paint removal, etc. in industries such as integrated circuits and hard disks that require strict control of metal ions and particles, such as photoresist removal fluid, IC semiconductor industry Cleaning of precision instruments, LCD liquid crystal materials, PCB printed circuit boards, and hard drives; as well as solvents produced in the pharmaceutical industry such as artificial kidney functional membrane liquid and seawater desalination membrane liquid.


Packaging, Grades & Supply

We supply N-Methyl-2-pyrrolidone (NMP) in drums, IBC tanks and bulk shipments for industrial buyers and long-term contracts. COA and MSDS are available with each shipment. For bulk orders, please ask for NMP solvent for sale and current commercial terms.


Why choose Greenchem International?

Stable export supply and strict quality control.
Flexible packaging and bulk logistics support.
Technical support for formulation and application selection.
Competitive commercial terms for long-term buyers.


Safety & Handling

NMP should be handled with appropriate PPE and good ventilation. Follow local regulations and the MSDS for storage, transport and disposal.


Ordering & Inquiry

To buy N-Methyl-2-pyrrolidone (CAS 872-50-4) or request COA, MSDS and a competitive NMP solvent price, please share your required grade, quantity and delivery country. We will reply with lead time and quotation.




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