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N-Methyl-2-pyrrolidone Structure

N-Methyl-2-pyrrolidone

Chemical Properties

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
Flash point 187 °F
storage temp.  Store at +5°C to +30°C.
solubility  ethanol: miscible0.1ML/mL, clear, colorless (10%, v/v)
form  Liquid
pka -0.41±0.20(Predicted)
color  ≤20(APHA)
Odor Slight amine odor
PH Range 7.7 - 8.0
PH 8.5-10.0 (100g/l, H2O, 20℃)
explosive limit 1.3-9.5%(V)
Water Solubility  >=10 g/100 mL at 20 ºC
Sensitive  Hygroscopic
λmax 283nm(MeOH)(lit.)
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.
InChIKey SECXISVLQFMRJM-UHFFFAOYSA-N
LogP -0.46 at 25℃
Indirect Additives used in Food Contact Substances N-METHYL-2-PYRROLIDONE
CAS DataBase Reference 872-50-4(CAS DataBase Reference)
FDA UNII JR9CE63FPM
Proposition 65 List N-Methylpyrrolidone
NIST Chemistry Reference 2-Pyrrolidinone, 1-methyl-(872-50-4)
EPA Substance Registry System N-Methyl-2-pyrrolidone (872-50-4)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H315-H319-H335-H360D
Precautionary statements P202-P261-P264-P302+P352-P305+P351+P338-P308+P313
Hazard Codes  T,Xi
Risk Statements  45-65-36/38-36/37/38-61-10-46
Safety Statements  41-45-53-62-26
WGK Germany  1
RTECS  UY5790000
3-8-10
Autoignition Temperature 518 °F
TSCA  Y
HS Code  2933199090
Hazardous Substances Data 872-50-4(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 3598 mg/kg LD50 dermal Rabbit 8000 mg/kg
NFPA 704:
1
2 0

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