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
Thermal Conductivity :0.162 W/(m·K) at 25 ℃
Specific Heat Capacity :Cp(liquid): 3.11 J/(g·K), at 25℃
Sensitive :Hygroscopic
λmax :283nm(MeOH)(lit.)
Merck :14,6117
BRN :106420
Henry's Law Constant :3.1×10³ mol/(m³Pa) at 25℃, Brockbank (2013)
Exposure limits :EU LTEL: 10 ppm(40 mg/m3); EU STEL: 20 ppm(80 mg/m3)
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313 IF exposed or concerned: Get medical advice/attention.