Melting point :-23 °C (lit.)
Boiling point :131 °C (lit.)
Density :0.967 g/mL at 25 °C (lit.)
vapor density :2.31 (vs air)
vapor pressure :8.7 hPa (20 °C)
refractive index :n20/D 1.508(lit.)
FEMA :3386 | PYRROLE
Flash point :92 °F
storage temp. :Store at +2°C to +8°C.
solubility :60g/l
pka :15(at 25℃)
form :Liquid
color :Clear almost colorless to brownish
PH :>6 (10g/l, H2O, 20℃)
Odor :at 0.10 % in propylene glycol. sweet warm nutty ethereal
Odor Type :nutty
biological source :synthetic
explosive limit :3.10-14.8%(V)
Water Solubility :60 g/L (20 ºC)
Sensitive :Air & Light Sensitive
Merck :14,8014
JECFA Number :1314
BRN :1159
Henry's Law Constant :5.5×10^-1 mol/(m³Pa) at 25℃, Hawthorne et al. (1985)
Dielectric constant :7.5（17℃）
Stability :Stable. Incompatible with strong acids, strong oxidizing agents. Combustible.
Major Application :flavors and fragrances
InChI :1S/C4H5N/c1-2-4-5-3-1/h1-5H
InChIKey :KAESVJOAVNADME-UHFFFAOYSA-N
SMILES :c1cc[nH]c1
LogP :0.85
Surface tension :36.6mN/m at 20°C
CAS DataBase Reference :109-97-7(CAS DataBase Reference)
NIST Chemistry Reference :Pyrrole(109-97-7)
EPA Substance Registry System :1H-Pyrrole (109-97-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P242 Use only non-sparking tools. P243 Take precautionary measures against static discharge. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P370+P378 In case of fire: Use … for extinction. P403+P235 Store in a well-ventilated place. Keep cool. P405 Store locked up. P501 Dispose of contents/container to..…