Melting point :211-213 °C (lit.)
Boiling point :287.44°C (rough estimate)
Density :1.2480 (rough estimate)
refractive index :1.5050 (estimate)
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :Soluble in ethanol (50 mg/ml), dimethyl sulfoxide and methanol.
pka :4.40±0.30(Predicted)
form :Powder
color :Light beige to yellow
BRN :124391
InChI :InChI=1S/C9H7NO2/c11-9(12)7-1-2-8-6(5-7)3-4-10-8/h1-5,10H,(H,11,12)
InChIKey :IENZCGNHSIMFJE-UHFFFAOYSA-N
SMILES :N1C2=C(C=C(C(O)=O)C=C2)C=C1
CAS DataBase Reference :1670-81-1(CAS DataBase Reference)

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. P280 Wear protective gloves/protective clothing/eye protection/face protection. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405 Store locked up.