Divinyl sulfide

Divinyl sulfide
Names
	Preferred IUPAC name (Ethenylsulfanyl)ethene
	Other names vinyl sulfide, DVS
Identifiers
CAS Number	627-51-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:177668;
ChemSpider	11817;
PubChem CID	12321;
UNII	CL87X0NVJA;
CompTox Dashboard (EPA)	DTXSID10211766 ;
	InChI InChI=1S/C4H6S/c1-3-5-4-2/h3-4H,1-2H2 Key: UIYCHXAGWOYNNA-UHFFFAOYSA-N;
	SMILES C=CSC=C;
Properties
Chemical formula	C4H6S
Molar mass	86.15 g·mol−1
Appearance	colorless liquid
Density	0.9098 g/cm3 (20 °C)
Melting point	20 °C (68 °F; 293 K)
Boiling point	84 °C (183 °F; 357 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Divinyl sulfide is the organosulfur compound with the formula S(CH=CH₂)₂. A colorless liquid with a faint odor, it is found in some species of Allium.

It is notable as the product from hydrogen sulfide and acetylene, a combination that arises when acetylene is generated by hydrolysis of technical-grade calcium carbide, which contains impurities of calcium sulfide.

Divinylsulfide was first prepared in 1920 by the reaction of bis(2-chloroethyl)sulfide with sodium ethoxide:

(ClCH₂CH₂)₂S + 2 NaOEt → (CH₂=CH)₂S + 2 EtOH + 2 NaCl

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