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Eastman NMP (N-Methyl-2-Pyrrolidone)
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Producer: 
Eastman
N-Methyl-2-Pyrrolidone (NMP) is a high boiling, polar aprotic, low viscosity liquid. NMP has a good solvency for a wide range of organic and inorganic compounds and it is miscible with water at all temperatures and has a high chemical and thermal stability. It is used as a solvent for engineering polymers and coating resins. Additionally, the polar nature and the low surface tension of NMP makes it an excellent cleaning medium and paint stripping solvent. NMP is a powerful solvent with a low volatility used for a wide range of chemicals and finds its application among others in: Petrochemical processing: NMP is used as extraction medium in several industrial processes because of its affinity for unsaturated hydrocarbons and aromatics, for example butadiene recovery, BTX extraction, lube oil purification, ... As illustration for the strong selectivity of NMP towards acetylene, the table below shows the solubility of acetylene in various solvents. Solvent K value (1 atm ml gas/ ml solvent, at 20°C) Boiling point NMP 43 204°C DMF 36 153°C Aceton 17.5 56.5°C BLO 17 204°C Cyclohexanone 14 155°C Electronics: NMP is used as photoresist stripper, for defluxing, degreasing and cleaning. NMP is a solvent for the production of FCCL, polyamide/polyimide wire enamels, epoxy and polyurethane coatings, ... Pharmaceuticals: NMP can be used as solvent, extraction medium, … Industrial and household cleaning: NMP is used for paint stripping, in graffiti removers, oven cleaners, in automotive and industrial cleaner formulations, ... Agrochemicals: NMP can be used as solvent during synthesis or as a formulation agent.

Eastman NMP (N-Methyl-2-Pyrrolidone)

Producer: 
Eastman
N-Methyl-2-Pyrrolidone (NMP) is a high boiling, polar aprotic, low viscosity liquid. NMP has a good solvency for a wide range of organic and inorganic compounds and it is miscible with water at all temperatures and has a high chemical and thermal stability. It is used as a solvent for engineering polymers and coating resins. Additionally, the polar nature and the low surface tension of NMP makes it an excellent cleaning medium and paint stripping solvent. NMP is a powerful solvent with a low volatility used for a wide range of chemicals and finds its application among others in: Petrochemical processing: NMP is used as extraction medium in several industrial processes because of its affinity for unsaturated hydrocarbons and aromatics, for example butadiene recovery, BTX extraction, lube oil purification, ... As illustration for the strong selectivity of NMP towards acetylene, the table below shows the solubility of acetylene in various solvents. Solvent K value (1 atm ml gas/ ml solvent, at 20°C) Boiling point NMP 43 204°C DMF 36 153°C Aceton 17.5 56.5°C BLO 17 204°C Cyclohexanone 14 155°C Electronics: NMP is used as photoresist stripper, for defluxing, degreasing and cleaning. NMP is a solvent for the production of FCCL, polyamide/polyimide wire enamels, epoxy and polyurethane coatings, ... Pharmaceuticals: NMP can be used as solvent, extraction medium, … Industrial and household cleaning: NMP is used for paint stripping, in graffiti removers, oven cleaners, in automotive and industrial cleaner formulations, ... Agrochemicals: NMP can be used as solvent during synthesis or as a formulation agent.
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Applications & Uses

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Recommended Uses
  • Electronics
  • Paints & coatings
  • Polymer & plastic
  • Process solvents
  • Solvents/stripping agents
  • Wire wrappers

Properties

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Physical Properties
ValueUnitsTest Method / Conditions
Boiling Point204.0°C
Freezing Point-24.2°C
Typical Properties
ValueUnitsTest Method / Conditions
Molecular FormulaC5H9NO
Molecular Weight99.13g/mol
Density (25 °C)1.03g/cm3
Evaporation Rate360.0
Flash Point - Closed Cup91.0°C
Free energy of formation (25°C)210.85kJ/mol
Hansen solubility parameters (25°C) Dispersion17.6(MPa)½
Hansen solubility parameters (25°C) Hydrogen Bonding7.0(MPa)½
Hansen solubility parameters (25°C) Polar12.0(MPa)½
Hansen solubility parameters (25°C) Total22.4(MPa)½
Partition Coefficient (n-octanol/waterlogPow)-0.46
pH (100%)8.5-10
Refractive Index1.47
Surface Tension (25°C)41.0mN/m
Vapor Density (air = 1)3.42
Vapor pressure at 20°C0.324hPa
Vapor Pressure (40°C)1.357hPa
Vapor Pressure (80°C)13.473hPa
Viscosity (25°C)1.661mPa·s
Viscosity (50°C)1.0mPa·s
Viscosity (80°C)0.9mPa·s
Electrical Properties
ValueUnitsTest Method / Conditions
Dielectric Constant 10 kHz (25°C)32.2
Dipole moment (20°C)12.26D (debye)
Thermal Conductivity (20°C)180.0mW/m.K
Thermal Conductivity (50°C)179.0mW/m.K
Thermal conductivity at 80°C177.0mW/m.K
Combustion Properties
ValueUnitsTest Method / Conditions
Specific Heat (20°C)0.175kJ/mol.K
Auto Ignition Temperature245.0°C
Heat of Combustion3 023kJ/mol
Heat of Vaporization (20°C)54.5kJ/mol

Packaging & Availability

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Documents (3)

Name
Type
N-methyl-2-pyrrolidone (NMP) Sales Specifications Sheet
Other
Active, excipient, and intermediate ingredients for pharmaceuticals
Other
Eastman ingredients for pharmaceuticals
Other