N-Methyl-2-pyrrolidone CAS#872-50-4

N-Methyl-2-pyrrolidone Chemical Properties

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

λmax

283nm(MeOH)(lit.)

Sensitive 

Hygroscopic

Merck 

14,6117

BRN 

106420

Dielectric constant

32.200000000000003

Stability:

Stable, but decomposes upon exposure to light. Combustible. Incompatible with strong oxidizing agents, strong acids, reducing agents, bases.

Major Application

food and beverages

Cosmetics Ingredients Functions

SOLVENT

InChI

1S/C5H9NO/c1-6-4-2-3-5(6)7/h2-4H2,1H3

InChIKey

SECXISVLQFMRJM-UHFFFAOYSA-N

SMILES

CN1CCCC1=O

LogP

-0.46 at 25℃

Surface tension

41.3mN/m at 293.15K

CAS DataBase Reference

872-50-4(CAS DataBase Reference)

NIST Chemistry Reference

2-Pyrrolidinone, 1-methyl-(872-50-4)

EPA Substance Registry System

N-Methyl-2-pyrrolidone (872-50-4)

Safety Information

Risk Statements 

45-65-36/38-36/37/38-61-10-46

Safety Statements 

41-45-53-62-26

RIDADR 

NA1993

WGK Germany 

1

RTECS 

UY5790000

F 

3-8-10

Autoignition Temperature

518 °F

TSCA 

TSCA listed

HazardClass 

CBL

HS Code 

2933199090

Storage Class

6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects

Hazard Classifications

Eye Irrit. 2
Repr. 1B
Skin Irrit. 2
STOT SE 3

Hazardous Substances Data

872-50-4(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 3598 mg/kg LD50 dermal Rabbit 8000 mg/kg