Melting point :−140 °C(lit.)
Boiling point :1 °C(lit.)
Density :0.5990
vapor density :2 (vs air)
vapor pressure :2575 mm Hg ( 37.7 °C)
refractive index :1.3932
Flash point :<−30 °F
explosive limit :9.7%
Merck :1520
BRN :1718756
Stability :Stable. Incompatible with strong oxidizing agents, peroxides, peroxyacids, aluminium tetrahydroborate. Extremely flammable.
InChIKey :IAQRGUVFOMOMEM-ONEGZZNKSA-N
CAS DataBase Reference :624-64-6(CAS DataBase Reference)
EPA Substance Registry System :trans-2-Butene (624-64-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H220 Extremely flammable gas Flammable gases Category 1 Danger P210, P377, P381, P403 H280 Contains gas under pressure; may explode if heated Gases under pressure Compressed gas Liquefied gas Dissolved gas Warning P410+P403
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P410+P403 Protect from sunlight. Store in a well-ventilated place.