Melting point :202-206 °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 clear yellow solution 5% in ethanol, dimethyl sulfoxide and methanol.
pka :4.44±0.30(Predicted)
form :Crystalline Powder or Crystals
color :Off-white to yellow to brown
BRN :124132
CAS DataBase Reference :1477-50-5(CAS DataBase Reference)
NIST Chemistry Reference :Indole-2-carboxylic acid(1477-50-5)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 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. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.