Melting point :51-54 °C (lit.)
Boiling point :253-254 °C (lit.)
Density :1.22
vapor pressure :0.016 hPa (25 °C)
refractive index :1.6300
FEMA :2593 | INDOLE
Flash point :>230 °F
storage temp. :2-8°C
solubility :methanol: 0.1 g/mL, clear
pka :3.17 (quoted, Sangster, 1989)
form :Crystalline Powder
color :White to slightly pink
PH :5.9 (1000g/l, H2O, 20℃)
Odor :fecal odor, floral in high dilution
Odor Threshold :0.0003ppm
Odor Type :animal
Water Solubility :2.80 g/L (25 ºC)
Sensitive :Light Sensitive
Merck :14,4963
JECFA Number :1301
BRN :107693
Stability :Stable, but may be light or air sensitive. Incompatible with strong oxidizing agents, iron and iron salts.
LogP :2.14-2.24
CAS DataBase Reference :120-72-9(CAS DataBase Reference)
NIST Chemistry Reference :Indole(120-72-9)
EPA Substance Registry System :Indole (120-72-9)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.