Melting point :-31 °C
Boiling point :50-51 °C25 mm Hg(lit.)
Density :0.979 g/mL at 25 °C(lit.)
refractive index :n20/D 1.5445(lit.)
Flash point :88 °F
storage temp. :-20°C
solubility :0.24g/l
form :Liquid
Specific Gravity :0.979
color :Colorless
Water Solubility :It is soluble in water 0.24 g/L (20°C).
Sensitive :Air Sensitive
BRN :2327045
Dielectric constant :2.4（25℃）
Stability :Light Sensitive
EPA Substance Registry System :Benzene-d5, ethenyl-d3- (19361-62-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning 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 H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312 H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. 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.