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N-Methyl-Pyrrolidone
N-Methyl-Pyrrolidone

Chemical name: N-Methyl-2-pyrrolidinone; 1-Methyl-2-pyrrolidone; N-Methyl-2-Pyrrolidone; NMP

CAS NO.:872-50-4

Characteristics:

Molecular formula:

C5H9NO

Molecular weight:

99.134

Structural formula:

Density(D420)g/ml:

1.028~1.033

Melting point:

-23.6οC

Boiling point:

202οC

Flash point:
PH-value(100g/l)at 20οC
Refractive index:(nD20)

95οC
7.5-10
1.465-1.475

Ignition temperature
Dynamic at 20οC

245οC
1.796 mPas

Properties:

Colourless transparent liquid,it has strong water absorption. It can almost dissolve in all the solvents

Specification:

N-methyl pyrrolidone Specifications (Operative Standard: Q/1400MCX002-2009) :

Item

Electronic grade

Industrial Grade

Test Method

Appearance

Colorless transparent liquid

Colorless transparent liquid

Eye-measurement

Purity %

=99.90

=99.50

Gas chromatography

Moisture %

=0.020

=0.050

Karl Fischer method

Tone APHA

=10

=15

Colorimetry

Density (D420) g/ml

1.027-1.035

1.027-1.035

Proportion

Refractive rate (nD20)

1.465-1.475

1.465-1.475

Spectrophotometry

PH Value (20οC,100g/L)

7.5-10

7.5-10

Potential method

Uses:

As a high-selective polar solvent and nitrogen heterocycle compound, NMP has such advantages as non-toxicity, high boiling point, low corrosion, high solubility, low viscosity, low volatility and good stability and high selectivity.
N-Methyl-pyrrolidone(electronic grade) is mainly used in such fields as:
(1) As solvent of poly(1,1-difluoro-Ethene); or electrode's accessory material of lithium ion battery.
(2)As remover liquid of photoresist; in the production of LCD materials;
(3)As solvent in pharmacy;
(4)Cleaning of precision instruments and circuit board.
1-Methyl-2-pyrrolidinone(industrial grade) is mainly used in such fields as:
(1)Extraction and recycling of organic raw materials in petrochemical industry
(2)Refining of lubricating oils
(3)As solvent of polymers and in polymerization.
(4) As solvent of resin processing in the manufacture of coatings, lacquer for floor, varnish, compound coating filming, enameled wire of IC, fiber fabrics and adhesives, etc.
(5) As industrial-use detergents in the cleaning of chemical equipments, stem, adhesive material and coatings etc.
(6) As solvent and dispersant in the production of pesticides and pigments.

Storage and transportation:

Store in cool and airy place; keep away from fire and heat; handle with care; avoid leakage.