Dimethyl disulfide


Methyl disulfide, DMDS
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

vapor density

3.24 (vs air)

Quality Level

vapor pressure

22 mmHg ( 20 °C)



autoignition temp.

>572 °F

expl. lim.

16 %

refractive index

n20/D 1.525 (lit.)


109 °C (lit.)


−85 °C (lit.)


1.046 g/mL at 25 °C (lit.)

SMILES string




InChI key


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General description

Dimethyl disulfide (DMDS) is an organic dialkyl disulfide. It is one of the odorous compounds found on the working face of typical municipal solid waste landfill in China. DMDS forms adducts with mono-unsaturated acetates by addition across carbon-carbon double bonds. These adducts are useful to locate the of double bonds in long-chain mono-unsaturated acetates. Adsorption of DMDS on Au(111) surface has been investigated by the density functional theory (DFT) within a generalized gradient approximation and experimental high-resolution electron energy loss spectroscopy (HREELS) techniques.


Dimethyl disulfide (DMDS) may be used to derivatize alkenes for the determination of position of double bond by MS. It may also be used to determine the location of the double-bond position of monounsaturated fatty acids in Campylobacter cryaerophila by combined GC-MS analysis.


1 L in Sure/Seal™
25, 250 mL in Sure/Seal™

Legal Information

Product of Arkema Inc.

Signal Word


Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 2381 3 / PGII

WGK Germany


Flash Point(F)

59.0 °F

Flash Point(C)

15 °C

C W Moss et al.
Journal of clinical microbiology, 27(7), 1467-1470 (1989-07-01)
Location of the double-bond position of monounsaturated fatty acids in Campylobacter cryaerophila was accomplished with combined gas chromatography-mass spectrometry analysis of dimethyl disulfide (DMDS) derivatives. The monoenoic fatty acids from whole bacterial cells were converted to methyl esters and then...
Adsorption state of dimethyl disulfide on Au?111?: Evidence for adsorption
as thiolate at the bridge site
Hayashi T, et al.
J. Chem. Phys. , 114(17), 7615-7621 (2001)
Determination of double bond position in mono-unsaturated acetates by mass spectrometry of dimethyl disulfide adducts.
Buser HR, et al.
Analytical Chemistry, 55(6), 818-822 (1983)
Lu Wenjing et al.
Waste management (New York, N.Y.), 42, 74-81 (2015-05-23)
Temporal variation (seasonal and daily) of odor emission on the working face of a large sanitary landfill in China was characterized through a 2 yearlong case study. Odor pollution was most serious in spring and autumn, while lower odor concentrations...
Gabrielle A Nevitt
Integrative and comparative biology, 51(5), 819-825 (2011-09-02)
Information transfer influences food-web dynamics in the marine environment, but infochemicals involved in these processes are only beginning to be understood. Dimethylsulfoniopropionate (DMSP) is produced by phytoplankton and other marine algae, and has been studied primarily in the context of...
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