the three compounds formed when dimethyl sulfide is burned in excess oxygen
Answers
Answer:
Dimethyl sulfide (DMS) or methylthiomethane is an organosulfur compound with the formula (CH3)2S. Dimethyl sulfide is a flammable liquid that boils at 37 °C (99 °F) and has a characteristic disagreeable odor. It is a component of the smell produced from cooking of certain vegetables, notably maize, cabbage, beetroot and seafoods. It is also an indication of bacterial contamination in malt production and brewing. It is a breakdown product of dimethylsulfoniopropionate (DMSP), and is also produced by the bacterial metabolism of methanethiol.
Dimethyl sulfide
Skeletal formula of dimethyl sulfide with all implicit hydrogens shown
Spacefill model of dimethyl sulfide
Names
Preferred IUPAC name
(Methylsulfanyl)methane[1]
Other names
(Methylthio)methane[1]
Dimethyl sulfide[1]
Identifiers
CAS Number
75-18-3 ☑
3D model (JSmol)
Interactive image
3DMet
B00138
Beilstein Reference
1696847
ChEBI
CHEBI:17437 ☑
ChEMBL
ChEMBL15580 ☑
ChemSpider
1039 ☑
ECHA InfoCard
100.000.770
EC Number
200-846-2
KEGG
C00580 ☑
MeSH
dimethyl+sulfide
PubChem CID
1068
RTECS number
PV5075000
UNII
QS3J7O7L3U ☑
UN number
1164
CompTox Dashboard (EPA)
DTXSID9026398 Edit this at Wikidata
InChI
InChI=1S/C2H6S/c1-3-2/h1-2H3 ☑
Key: QMMFVYPAHWMCMS-UHFFFAOYSA-N ☑
Key: QMMFVYPAHWMCMS-UHFFFAOYAH
SMILES
CSC
Properties
Chemical formula
C2H6S
Molar mass
62.13 g·mol−1
Appearance
Colourless liquid
Odor
Cabbage, sulfurous
Density
0.846 g cm−3
Melting point
−98 °C; −145 °F; 175 K
Boiling point
35 to 41 °C; 95 to 106 °F; 308 to 314 K
log P
0.977
Vapor pressure
53.7 kPa (at 20 °C)
Magnetic susceptibility (χ)
−44.9⋅10−6 cm3/mol
Refractive index (nD)
1.435
Thermochemistry
Std enthalpy of
formation (ΔfH⦵298)
−66.9–63.9 kJ⋅mol−1
Std enthalpy of
combustion (ΔcH⦵298)
−2.1818–2.1812 MJ⋅mol−1
Hazards
Safety data sheet
osha.gov
GHS pictograms
GHS02: Flammable GHS05: Corrosive GHS07: Harmful
GHS Signal word
Danger
GHS hazard statements
H225, H315, H318, H335
GHS precautionary statements
P210, P261, P280, P305+351+338
Flash point
−36 °C (−33 °F; 237 K)
Autoignition
temperature
206 °C (403 °F; 479 K)
Explosive limits
19.7%
Related compounds
Related chalcogenides
Dimethyl ether (dimethyl oxide)
Dimethyl selenide
Dimethyl telluride
Related compounds
Dimethyl ether
Dimethyl sulfoxide
Dimethyl sulfone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
The three compounds formed when dimethyl sulfide is burned in excess oxygen sulfur dioxide, carbon dioxide, and water.
- When dimethyl sulfide is burnt in excess oxygen, three compounds are formed mainly, and they are sulfur dioxide (SO₂), carbon dioxide (CO₂), and water (H₂O).
- The balanced chemical equation for the combustion of dimethyl sulfide burnt in excess oxygen is: 2CH₃-S-CH₃+ 9O₂ → 2SO₂ + 4CO₂ + 6H₂O
- The dimethyl sulfide has an oxidation state of -2 and is oxidized to dimethyl sulfoxide with an oxidation state of 0.
- However, the oxidation converts the compound to dimethyl sulfone and has the oxidation state +2.
- Moreover, the sulfoxides have basic character, and are excellent ligands and readily alkylated.
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