Thiirane

C₂H₄SMolar mass60.11 g·mol Appearance Pale, yellow liquid OdorSulfurous Density1.01 g cm Melting point−109 °C (−164 °F; 164 K) Boiling point56 °C; 133 °F; 329 K Vapor pressure28.6 kPa (at 20 °C) Thermochemistry

Std enthalpy of
formation(Δ_fH₂₉₈)

51–53 kJ mol

Std enthalpy of
combustion(Δ_cH₂₉₈)

−2.0126 MJ mol Hazards GHS labelling:

Pictograms

Signal word

Danger

Hazard statements

H225, H301, H318, H331

Precautionary statements

P210, P261, P280, P301+P310, P305+P351+P338, P311NFPA 704 (fire diamond)

3

4

2

Flash point10 °C (50 °F; 283 K) Related compounds

Related heterocycles

Ethylene oxide
Aziridine
Borirane

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

verify ( ?)

Thiirane, more commonly known as ethylene sulfide, is the cyclic chemical compound with the formula C₂H₄S. It is the smallest sulfur-containing heterocycle and the simplest episulfide. Like many organosulfur compounds, this species has a highly unpleasant odour. Thiirane is also used to describe any derivative of the parent ethylene sulfide.