Melting point :-135 °C
Boiling point :65-66 °C(lit.)
Density :0.87 g/mL at 25 °C(lit.)
refractive index :n20/D 1.417(lit.)
Flash point :−58 °F
storage temp. :2-8°C
solubility :Miscible with ethanol, ethyl ether, benzene and organic solvents.
form :clear liquid to slightly cloudy liquid
color :Colorless to Light orange to Yellow
Sensitive :Moisture Sensitive
BRN :103170
InChI :InChI=1S/C4H6O/c1-2-4-3-5-4/h2,4H,1,3H2
InChIKey :GXBYFVGCMPJVJX-UHFFFAOYSA-N
SMILES :O1CC1C=C
CAS DataBase Reference :930-22-3(CAS DataBase Reference)
EPA Substance Registry System :1,2-Epoxy-3-butene (930-22-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.