Melting point :-66.9°C (estimate)
Boiling point :132-134 °C (lit.)
Density :0.99 g/mL at 25 °C (lit.)
vapor pressure :60.9 at 60.3 °C, 92.2 at 70.3 °C, 136 at 80.3 °C, 197 at 90.3 °C, 280 at 100.3 °C (Eon et al., 1971)
refractive index :n20/D 1.513(lit.)
Flash point :70 °F
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :0.29g/l
form :liquid (estimate)
Specific Gravity :0.990
color :yellow-green
Water Solubility :Not miscible or difficult to mix with water.
BRN :105402
LogP :2.870
CAS DataBase Reference :872-55-9(CAS DataBase Reference)
NIST Chemistry Reference :Thiophene, 2-ethyl-(872-55-9)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.