Zhejiang Realsun Chemical Co., Ltd. is one of the most reliable manufacturers and suppliers of n-methyl-2-pyrrolidone in China. If you're going to buy high quality n-methyl-2-pyrrolidone, welcome to get pricelist and free sample from our factory. Good service and low price are available.
- Chinese alias: N-methylpyrrolidone; 1-Methyl-2-pyrrolidone; N-methyl-2-pyrrolidone,
High-Purity NMP Solvent for Lithium Batteries, Semiconductor Manufacturing, Polymer Processing and Fine Chemical Applications
N-Methyl-2-Pyrrolidone (NMP) is a high-boiling, polar aprotic solvent widely used in lithium-ion battery manufacturing, semiconductor processing, polymer synthesis, pharmaceutical production, and specialty chemical formulations. Its outstanding solvency for polymers such as PVDF, polyimide (PI), and epoxy resins makes it an essential process solvent in a wide range of high-performance industrial applications.
Manufactured by Realsun Chemical, our NMP is available in both Industrial Grade (99.8%) and Electronic / Semiconductor Grade (99.99%), produced on fully automated DCS-controlled continuous production lines to ensure exceptional purity, stable quality, and consistent performance.
Supported by multiple manufacturing bases, integrated upstream raw material resources, and long-term inventory planning, we provide reliable global supply for both routine procurement and strategic sourcing programs.
Why Choose Realsun NMP?
Multiple Grades for Different Manufacturing Requirements
Our NMP product portfolio includes:
• Industrial Grade: Purity ≥99.8%
• Electronic Grade: Purity ≥99.99%
• Semiconductor High-Purity Grade
Different purity levels are designed to meet the quality requirements of industries ranging from general chemical processing to advanced electronics manufacturing.
Excellent Solvency Performance
NMP offers excellent dissolving power for numerous high-performance polymers and organic materials, including:
• PVDF binders
• Polyimide (PI)
• Epoxy resins
• Engineering plastics
• Specialty polymers
Its high boiling point and strong polarity make it an effective reaction medium, cleaning solvent, and formulation component across many industrial processes.
Reliable Long-Term Supply
Realsun operates dedicated automated NMP production facilities supported by an integrated BDO value chain and multiple manufacturing sites.
Supply advantages include:
• Continuous DCS-controlled production
• Multi-site manufacturing capability
• Stable raw material supply
• Safety inventory for both raw materials and finished products
• Long-term supply agreements
• Annual pricing contracts for strategic customers
Product Information
| Item | Specification |
| Product Name | N-Methyl-2-Pyrrolidone |
| Abbreviation | NMP |
| CAS No. | 872-50-4 |
| Molecular Formula | C₅H₉NO |
| Appearance | Clear, colorless liquid with a slight amine-like odor |
| Available Grades | Industrial Grade / Electronic Grade / Semiconductor Grade |
| Purity | ≥99.8% / ≥99.99% |
|
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.) |
|
Refractive Index |
n20/D 1.479 |
|
Flash Point |
187 °F |
|
Storage Conditions |
Store at +5°C to +30°C. |
|
Solubility |
Miscible ethanol, with a solubility of 0.1 mL/mL, is transparent and colorless (10%, v/v) |
|
Form |
liquid |
|
Color |
≤20(APHA) |
|
Odor |
slightly amine odor |
|
PH value |
8.5-10.0 (100g/l, H2O, 20℃) |
Typical Functions
NMP is widely used as:
• A high-boiling polar aprotic solvent
• A solvent for PVDF binders in lithium-ion battery electrodes
• A precision cleaning solvent for semiconductor manufacturing
• A reaction medium for polymer synthesis
• A solvent for coatings, adhesives, and pharmaceutical intermediates
Technical Specifications
|
Test Item |
Industrial Grade |
Electronic Grade |
|
Purity (GC) |
≥99.8% |
≥99.99% |
|
Water Content |
≤0.05% |
Available upon request |
|
Color (APHA) |
≤20 |
Available upon request |
|
Density (25°C) |
1.027–1.030 g/cm³ |
1.027–1.030 g/cm³ |
|
Boiling Point |
202°C |
202°C |
|
Residual Amine |
≤0.01% |
≤0.003% |
|
Total Metal Ions |
Standard industrial control |
Individual heavy metals ≤10 ppb (Fe, Pb, Cu, Cr, Cd, Al, Ni) |
N-Methylpyrrolidone: Uses and Synthesis Methods
N-Methylpyrrolidone, abbreviated as NMP, has a molecular formula of C5H9NO and is known as 1-Methyl-2-pyrrolidinone in English. It appears as a colorless to light yellow transparent liquid with a slight ammonia odor. It is miscible with water in any proportion and soluble in various organic solvents such as ether, acetone, esters, halogenated hydrocarbons, and aromatic hydrocarbons. It can mix completely with almost all solvents. Its boiling point is 204℃ and flash point is 91℃. It has strong moisture absorption, stable chemical properties, and is non-corrosive to carbon steel and aluminum, but slightly corrosive to copper. It boasts advantages such as low viscosity, good chemical and thermal stability, high polarity, low volatility, and infinite miscibility with water and many organic solvents. This product is classified as a mildly toxic substance, with an allowable limit concentration of 100PPM in the air.
Physicochemical properties
N-methylpyrrolidone is a colorless to light yellow transparent liquid with a slight ammonia odor. It is miscible with water in any proportion and soluble in various organic solvents such as ether, acetone, esters, halogenated hydrocarbons, and aromatic hydrocarbons. It mixes almost completely with all solvents. It is relatively stable in neutral solutions; it gradually hydrolyzes in concentrated hydrochloric acid to produce 4-methylaminobutyric acid.
Typical Applications
N-Methylpyrrolidone (NMP) is a polar aprotic solvent. It possesses advantages such as low toxicity, high boiling point, superior solubility, strong selectivity, and good stability. It is widely used in the extraction of aromatic hydrocarbons, purification of acetylene, olefins, and dienes, as a solvent for polyvinylidene fluoride, as an electrode auxiliary material for lithium-ion batteries, in desulfurization of synthesis gas, refining of lubricating oils, antifreeze agents for lubricating oils, extraction agents for olefins, solvents during the polymerization of insoluble engineering plastics, agricultural herbicides, insulating materials, integrated circuit manufacturing, cleaning of precision instruments and circuit boards in the semiconductor industry, PVC tail gas recovery, cleaning agents, dye auxiliaries, dispersants, etc. It is also used as a solvent for polymers and a medium for polymerization reactions, such as in engineering plastics and aramid fibers. Additionally, it can be used in pesticides, pharmaceuticals, and cleaning agents.
Lithium-Ion Batteries & Electronics
NMP is the industry-standard solvent for lithium-ion battery electrode production.
Typical applications include:
• Cathode and anode slurry preparation
• PVDF binder dissolution
• Uniform dispersion of active materials and conductive additives
• Electrode coating processes
• Improvement of coating uniformity and battery cycle life
In the electronics industry, high-purity NMP is also used for:
• Wafer precision cleaning
• Photoresist stripping
• LCD panel manufacturing
• Printed circuit board (PCB) cleaning
• Organic residue removal
• Supercapacitor electrolyte preparation
• Electronic insulation film processing
High-Performance Polymers
NMP is widely used in the manufacture of advanced polymer materials, including:
• Polyimide (PI) resin synthesis
• Flexible display films
• Aerospace insulation films
• Aramid fiber spinning
• Engineering plastics
• Polyethylene oxide (PEO) synthesis
• High-temperature resistant polymers
• Cast film processing
Its excellent solvency enables efficient polymer dissolution while supporting stable processing and improved product quality.
Fine Chemicals, Coatings & Adhesives
NMP serves as an effective solvent in numerous chemical manufacturing processes, including:
• Pharmaceutical intermediate synthesis
• Agrochemical production
• Polyurethane formulations
• Epoxy adhesive systems
• High-performance industrial coatings
• Paint removers
• Oilfield chemical additives
Its strong solvency and thermal stability make it suitable for demanding chemical synthesis and formulation applications.
Pharmaceutical Manufacturing
Within pharmaceutical production, NMP is commonly used as:
• A reaction solvent
• An extraction solvent
• A processing aid for active pharmaceutical ingredients (APIs)
• A solvent for pharmaceutical intermediates
Quality Assurance & Regulatory Compliance
Our NMP is manufactured in accordance with internationally recognized quality and regulatory standards.
Available compliance documentation includes:
• EU REACH Registration
• RoHS compliance (Electronic Grade)
• US TSCA compliance
• Safety Data Sheet (SDS/MSDS) in GHS format
• Batch-specific Certificate of Analysis (COA)
Our manufacturing facilities are certified to:
• ISO 9001 Quality Management System
• ISO 14001 Environmental Management System
• ISO 45001 Occupational Health & Safety Management System
Manufacturing & Supply Capability
Integrated Manufacturing
Realsun Chemical is a publicly listed high-tech enterprise (Stock Code: 301212) with an integrated BDO production chain supporting dedicated NMP manufacturing.
Our facilities feature fully automated DCS-controlled continuous production, providing stable output and consistent product quality without the interruptions associated with batch processing.
Production Network
Our primary manufacturing base is located in Linhai, Zhejiang, within China's National Pharmaceutical & Chemical Industrial Park, supported by additional production capacity and regional raw material storage facilities to ensure supply continuity.
Flexible Supply Programs
We support:
• Laboratory samples
• Spot purchases
• Bulk container shipments
• Annual supply agreements
• Long-term pricing contracts
Safety stock is maintained year-round to support customers in the lithium battery, semiconductor, and specialty chemical industries during periods of peak demand.
Packaging & International Logistics
Standard Packaging
Packaging options include:
Steel Drum
• 200 L galvanized steel drum
• Net weight: 200 kg
IBC Container
• 1,000 L Intermediate Bulk Container
• Net weight: 1,000 kg
Bulk Export
• ISO Tank containers for international bulk shipments
OEM Packaging
Private-label packaging, customized labeling, and OEM branding services are available upon request.
Global Logistics Support
We provide comprehensive logistics solutions for domestic and international customers.
Services include:
Certified hazardous chemical transportation
01
Nationwide delivery by tank truck or drum shipment
02
Complete export documentation
03
Ocean freight and air freight options
04
UN-certified hazardous goods packaging
05
For storage, NMP should be kept in tightly sealed containers in a cool, dry, well-ventilated warehouse, protected from direct sunlight and handled according to applicable chemical storage regulations.
Frequently Asked Questions
Is your NMP registered under EU REACH?
Yes. All grades of our NMP are fully registered under the EU REACH Regulation. Supporting registration documentation can be provided upon request to facilitate customer compliance and import procedures.
Can samples be supplied for evaluation?
Yes. Laboratory samples are available in 500 mL, 1 L, and 5 L packaging. Sample costs and freight charges may be credited or adjusted against future commercial orders, depending on the scope of cooperation.
What is the minimum order quantity?
Sample orders start from 500 mL.
Commercial orders begin with one 200 kg drum, while larger quantities are available in IBC containers or ISO Tank shipments for bulk export.
Do you offer OEM or private-label packaging?
Yes. We provide customized packaging services, including private-label branding, customized drum printing, and customer-specific COA formats to support distributor and OEM requirements.
What is the typical delivery lead time?
For products in stock, shipments are typically arranged within 3–7 business days after order confirmation.
Customized electronic-grade and semiconductor-grade products generally require 7–15 business days, while long-term contract customers benefit from priority production scheduling, reserved inventory, and expedited delivery.
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