471569

Dimethyl disulfide

≥99.0%

• Synonym(s): DMDS, Methyl disulfide
• Linear Formula: CH₃SSCH₃
• CAS Number: 624-92-0
• Molecular Weight: 94.20
• Beilstein: 1730824
• EC Number: 210-871-0
• MDL number: MFCD00008561
• UNSPSC Code: 12352100
• PubChem Substance ID: 24870743
• NACRES: NA.22

Properties

• vapor density: 3.24 (vs air)
• Quality Level: 100
• 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

Description

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.

Safety Information

• Pictograms: GHS02,GHS06,GHS08,GHS09
• Signal Word: Danger
• Hazard Statements: H225,H301 + H331,H317,H319,H336,H370,H410
• Precautionary Statements: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P304 + P340 + P311
• 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 Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 59.0 °F - closed cup
• Flash Point(C): 15 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves