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528021 Sigma-Aldrich

Dimethyl sulfide

Synonym: DMS, Methyl sulfide

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Properties

vapor density   2.1 (vs air)
vapor pressure   26.24 psi ( 55 °C)
  7.79 psi ( 20 °C)
InChI Key   QMMFVYPAHWMCMS-UHFFFAOYSA-N
assay   ≥99%
autoignition temp.   402 °F
expl. lim.   19.7 %
availability   available only in EU
refractive index   n20/D 1.435(lit.)
bp   38 °C(lit.)
mp   −98 °C(lit.)
solubility   water: soluble 7.28 g/L at 20 °C
density   0.846 g/mL at 25 °C(lit.)

Description

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Product of Arkema

Application

Dimethyl sulfide may be used to prepare methanethiol by thiolation reaction with hydrogen sulfide (H2S) in the presence of tungsten-zirconia (WO3/ZrO2) catalyst.

General description

Dimethyl sulfide (DMS) is a biogenic sulfur compound that is released from the ocean to the atmosphere. It forms the main component of the global sulfur cycle. The thermal decomposition behavior of dimethyl sulfide in gas phase has been investigated in a static system at 681-723K. The mechanism of its photochemical oxidation in atmosphere has been described. The rate constants of the gas phase reaction between OH radicals and DMS have been determined by relative rate method and flash photolysis. The differential Raman cross section, σDMS at different excitation wavelengths has been measured. The adsorption of DMS on activated carbons (ACs) has been reported to take place by hydrogen bonding.

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN1164 - class 3 - PG 2 - Dimethyl sulfide
WGK Germany 
1
RTECS 
PV5075000
Flash Point(F) 
-32.8 °F
Flash Point(C) 
-36 °C
Protocols & Articles
Peer-Reviewed Papers
15

References

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