Melting point :170-172 °C(lit.)
Boiling point :351.51°C (rough estimate)
Density :1.1096 (rough estimate)
refractive index :1.4800 (estimate)
storage temp. :2-8°C
solubility :methanol: 0.1 g/mL, clear, faintly yellow
form :Crystalline Powder
pka :pKa 9.02(H2O t=25 I=0.025) (Uncertain)
color :White to almost white
Water Solubility :PRACTICALLY INSOLUBLE
Merck :13,3155
BRN :2056095
Stability :Isomerizes rapidly in Benzene, Chloroform, and Ether. Keep Shielded from light.
CAS DataBase Reference :56-53-1(CAS DataBase Reference)
IARC :1 (Vol. 21, Sup 7, 100A) 2012
NIST Chemistry Reference :Diethylstilbesterol(56-53-1)
EPA Substance Registry System :Diethylstilbestrol (56-53-1)

Symbol(GHS):
Signal word:	Danger
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 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. 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. P308+P313 IF exposed or concerned: Get medical advice/attention.