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471569

Sigma-Aldrich

Dimethyl disulfide

≥99.0%

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Synonym(s):
DMDS, Methyl disulfide
Linear Formula:
CH3SSCH3
CAS Number:
Molecular Weight:
94.20
Beilstein:
1730824
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor density

3.24 (vs air)

Quality Level

vapor pressure

22 mmHg ( 20 °C)

Assay

≥99.0%

autoignition temp.

>572 °F

expl. lim.

16 %

refractive index

n20/D 1.525 (lit.)

bp

109 °C (lit.)

mp

−85 °C (lit.)

density

1.046 g/mL at 25 °C (lit.)

SMILES string

CSSC

InChI

1S/C2H6S2/c1-3-4-2/h1-2H3

InChI key

WQOXQRCZOLPYPM-UHFFFAOYSA-N

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1 of 4

This Item
W353604W35360068986
Dimethyl disulfide ≥99.0%

Sigma-Aldrich

471569

Dimethyl disulfide

Dimethyl disulfide ≥98%, FG

Sigma-Aldrich

W353604

Dimethyl disulfide

Dimethyl disulfide natural, ≥98%, FG

Sigma-Aldrich

W353600

Dimethyl disulfide

Dimethyl disulfide analytical standard

Supelco

68986

Dimethyl disulfide

refractive index

n20/D 1.525 (lit.)

refractive index

n20/D 1.525 (lit.)

refractive index

n20/D 1.525 (lit.)

refractive index

n20/D 1.525 (lit.), n20/D 1.525-1.529

bp

109 °C (lit.)

bp

109 °C (lit.)

bp

109 °C (lit.)

bp

109 °C (lit.)

mp

−85 °C (lit.)

mp

−85 °C (lit.)

mp

−85 °C (lit.)

mp

−85 °C (lit.)

density

1.046 g/mL at 25 °C (lit.)

density

1.046 g/mL at 25 °C (lit.)

density

1.046 g/mL at 25 °C (lit.)

density

1.046 g/mL at 25 °C (lit.)

Quality Level

100

Quality Level

400

Quality Level

400

Quality Level

100

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.

Application

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.

Legal Information

Product of Arkema Inc.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Sens. 1 - STOT SE 1 Inhalation - STOT SE 3

Target Organs

Respiratory system, Upper respiratory tract

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

59.0 °F

Flash Point(C)

15 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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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
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)
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)
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
J Greenman et al.
Journal of dental research, 83(1), 81-85 (2003-12-24)
The 0-5 organoleptic scale is used widely in breath research and in trials to measure the efficacy of anti-odor agents. However, the precise relationship between odor scores and gas concentrations of target odorants is unknown. The purpose of this study

Protocols

GC Analysis of a 7-Component Sulfur Gases Mix on Supel-Q™ PLOT after SPME using 75 μm Carboxen/PDMS Fiber

Separation of Sulfur dioxide; Hydrogen sulfide; Carbonyl sulfide; Methanethiol; Ethanethiol; Dimethyl disulfide; Carbon disulfide

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Separation of 2-Ethyl-3-methylpyrazine; 1-Methylpyrrole; 2,3-Dimethylpyrazine; 2,5-Dimethylpyrazine; 2-Ethylpyrazine, ≥98%, FG; 2,3-Diethylpyrazine; 2-Methylpyrazine; Carbon disulfide; Dimethyl disulfide; 2,6-Dimethylpyrazine

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