Melting point :-140 °C (lit.)
Boiling point :37 °C (lit.)
Density :0.649 g/mL at 25 °C (lit.)
vapor pressure :8.06 psi ( 20 °C)
refractive index :n20/D 1.381
Flash point :−50 °F
storage temp. :2-8°C
solubility :Soluble in alcohol, benzene, and ether (Weast, 1986)
pka :>14 (Schwarzenbach et al., 1993)
form :clear liquid
color :cis Form: Liquid
Water Solubility :203 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966)
Merck :14,7123
BRN :1718795
Henry's Law Constant :0.234 at 25 °C (Hine and Mookerjee, 1975)
LogP :2.580 (est)
CAS DataBase Reference :646-04-8(CAS DataBase Reference)
EPA Substance Registry System :trans-2-Pentene (646-04-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H224 Extremely flammable liquid and vapour Flammable liquids Category 1 Danger H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger 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:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P331 Do NOT induce vomiting. P403+P233 Store in a well-ventilated place. Keep container tightly closed.