Melting point :204-208 °C (dec.) (lit.)
Boiling point :340.3±15.0 °C(Predicted)
Density :0.862
refractive index :1.441-1.445
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :Soluble in methanol.
form :Powder
pka :4.45(at 20℃)
color :White to off-white to pale pink
BRN :80825
InChI :InChI=1S/C5H5NO2/c7-5(8)4-2-1-3-6-4/h1-3,6H,(H,7,8)
InChIKey :WRHZVMBBRYBTKZ-UHFFFAOYSA-N
SMILES :N1C=CC=C1C(O)=O
CAS DataBase Reference :634-97-9(CAS DataBase Reference)
NIST Chemistry Reference :Pyrrole-2-carboxylic acid(634-97-9)

Symbol(GHS):
Signal word:	Warning
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:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.