Melting point :27°C (estimate)
Boiling point :224-225 °C(lit.)
Density :1.016 g/mL at 25 °C(lit.)
refractive index :n20/D 1.449(lit.)
Flash point :230 °F
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :Acetonitrile: Soluble: =10 mg/ml
Methanol: Soluble: =10 mg/ml pka :4+-.0.10(Predicted)
form :Liquid
color :yellow
Water Solubility :Miscible with water.
BRN :1743192
InChI :InChI=1S/C6H8O2/c1-2-3-4-5-6(7)8/h1H,3-5H2,(H,7,8)
InChIKey :VPFMEXRVUOPYRG-UHFFFAOYSA-N
SMILES :C(O)(=O)CCCC#C
CAS DataBase Reference :53293-00-8(CAS DataBase Reference)

Symbol(GHS):
Signal word:	Warning
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
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.