Diethyl sulfide

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Diethyl sulfide
diethyl sulfide
diethyl sulfide 3D
CAS number 352-93-2 YesY
PubChem 6163
ChemSpider 9233 YesY
EC number 206-526-9
KEGG C14706 YesY
ChEBI CHEBI:27710 YesY
RTECS number LC7200000
Jmol-3D images Image 1
Molecular formula C4H10S
Molar mass 90.19
Appearance Clear liquid
Density 0.837 g/cm3
Melting point −103.8 °C (−154.8 °F; 169.3 K)
Boiling point 92 °C (198 °F; 365 K)
Solubility in water insoluble
Solubility in ethanol fully miscible
Solubility in diethyl ether fully miscible
MSDS External MSDS
R-phrases R11 R65
S-phrases (S2) S9 S16 S51 S62
Main hazards Skin and eye irritant. Highly flammable liquid and vapor
NFPA 704
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g., gasoline) Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g., calcium Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point −10 °C (14 °F; 263 K)
Related compounds
Related thioethers dimethyl sulfide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

Diethyl sulfide is a clear flammable chemical compound with a pungent garlic-like odor. It has the chemical formula C
, though it can also be written (C
or Et
to make its chemical structure more clear. It is prepared by treating ethanol with concentrated sulfuric acid, partially neutralizing the new solution with sodium carbonate, then distilling the resulting sodium ethyl sulfate in a solution containing potassium sulfide.[1]

Diethyl sulfide is a by-product of the commercial production of ethanethiol, which is prepared by the reaction of ethylene with hydrogen sulfide over an alumina-based catalyst. The amount of diethyl sulfide produced can be controlled by varying the ratio of hydrogen sulfide to ethylene.


Diethyl sulfide has been found to be a constituent of the odor of durian fruit[2] and as a constituent found in volatiles from potatoes.[3]


Diethyl sulfide is used as a solvent for anhydrous minerals and in plating baths for gold and silver.[1]


  1. ^ a b Merck index of Chemicals and Drugs, 9th ed., monograph 3801
  2. ^ Baldry, Jane; J. Dougan and G. E. Howard (1972). "Volatile Flavouring Constituents of Durian". Phytochemistry 11: 2081–2084. doi:10.1016/s0031-9422(00)90176-6. 
  3. ^ Gumbmann, M. R.; H. K. Burr (1964). "Volatile Sulfur Compounds in Potatoes". Journal of Food and Agricultural Chemistry 12: 404–408. doi:10.1021/jf60135a004.