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471569

Dimethyl disulfide

≥99.0%

Synonym(s):

DMDS, Methyl disulfide

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About This Item

Linear Formula:
CH3SSCH3
CAS Number:
624-92-0
Molecular Weight:
94.20
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24870743
EC Number:
210-871-0
Beilstein/REAXYS Number:
1730824
MDL number:
MFCD00008561
Assay:
≥99.0%
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vapor density

3.24 (vs air)

Quality Segment

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.)

functional group

disulfide

SMILES string

CSSC

InChI

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

InChI key

WQOXQRCZOLPYPM-UHFFFAOYSA-N

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.

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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

Central nervous system, Upper respiratory tract

Storage Class

3 - Flammable liquids

WGK

WGK 3

Flash Point (°F)

59.0 °F - closed cup

Flash Point (°C)

15 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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