| Thiirane | |
|---|---|
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Thiirane[1] |
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| Identifiers | |
| CAS number | 420-12-2 |
| PubChem | 9865 |
| ChemSpider | 9481 |
| EC number | 206-993-9 |
| UN number | 1992 |
| KEGG | C19419 |
| MeSH | ethylene+sulfide |
| ChEBI | CHEBI:30977 |
| RTECS number | KX3500000 |
| Beilstein Reference | 102379 |
| Gmelin Reference | 1278 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C2H4S |
| Molar mass | 60.12 g mol−1 |
| Exact mass | 60.003370818 g mol−1 |
| Appearance | Pale, yellow liquid |
| Density | 1.01 g cm−3 |
| Melting point |
-109 °C, 164 K, -164 °F |
| Boiling point |
56 °C, 329 K, 133 °F |
| Vapor pressure | 28.6 kPa (at 20 °C) |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
51-53 kJ mol-1 |
| Std enthalpy of combustion ΔcH |
-2.0126 MJ mol-1 |
| Hazards | |
| GHS pictograms | |
| GHS signal word | DANGER |
| GHS hazard statements | H225, H301, H318, H331 |
| GHS precautionary statements | P210, P261, P280, P301+310, P305+351+338, P311 |
| EU classification | F T |
| R-phrases | R11, R23/25, R41 |
| S-phrases | S16, S36/37/39, S45 |
| NFPA 704 |
4
3
2
|
| Flash point | 10 °C |
| Related compounds | |
| Related heterocycles | Ethylene oxide Aziridine Borirane |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Thiirane, more commonly known as ethylene sulfide, is the cyclic chemical compound with the formula C2H4S.[2] It is the smallest sulfur-containing heterocycle. Like many organosulfur compounds, this species has a stench. Thiirane is also used to describe any derivative of the parent ethylene sulfide.
It is prepared by the reaction of ethylene carbonate and KSCN.[3] For this purpose the KSCN is first melted under vacuum to remove water.
Ethylenesulfide adds to amines to afford 2-mercaptoethylamines,[4] which are good chelating ligands.