471577

Dimethyl sulfide

≥99%

• Synonym(s): DMS, Methyl sulfide
• Linear Formula: (CH₃)₂S
• CAS Number: 75-18-3
• Molecular Weight: 62.13
• Beilstein: 1696847
• EC Number: 200-846-2
• MDL number: MFCD00008562
• UNSPSC Code: 12352100
• PubChem Substance ID: 57650900
• NACRES: NA.21

Properties

• vapor density: 2.1 (vs air)
• Quality Level: 200
• vapor pressure: 26.24 psi ( 55 °C); 7.79 psi ( 20 °C)
• Assay: ≥99%
• autoignition temp.: 402 °F
• expl. lim.: 19.7 %
• 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.)
• functional group: thioether
• SMILES string: CSC
• InChI: 1S/C2H6S/c1-3-2/h1-2H3
• InChI key: QMMFVYPAHWMCMS-UHFFFAOYSA-N
• Gene Information: rat ... Maoa(29253) , Maob(25750)

Description

General description

Dimethyl sulfide (DMS) is a biogenic sulfur compound[1] that is released from the ocean to the atmosphere.[2] It forms the main component of the global sulfur cycle.[1][2] The thermal decomposition behavior of dimethyl sulfide in gas phase has been investigated in a static system at 681-723K.[3] The mechanism of its photochemical oxidation in atmosphere has been described.[2] The rate constant of the gas phase reaction between OH radicals and DMS have been determined by relative rate methods and flash photolysis technique.[4] The differential Raman cross section, σ_DMS at different excitation wavelengths has been measured.[1] The adsorption of DMS on activated carbons (ACs) has been reported to take place by hydrogen bonding.[5]

Application

• Characterization of the aroma-active compounds in Xiaokeng green tea by three pretreatment methods combined with gas chromatography-olfactometry (GC-O).: This study identified and characterized the aroma-active compounds in Xiaokeng green tea, highlighting the significant role of dimethyl sulfide as a contributor to its unique aroma profile (Gan et al., 2024).
• Novel insights into dimethylsulfoniopropionate cleavage by deep subseafloor fungi.: This article provides new insights into the metabolic pathways of deep-sea fungi, focusing on the cleavage of dimethylsulfoniopropionate (DMSP) and subsequent production of dimethyl sulfide, impacting sulfur cycling in marine ecosystems (Liu et al., 2024).
• Adsorption Mechanism and Regeneration Performance of Calcined Zeolites for Hydrogen Sulfide and Its Application.: The study explores the use of calcined zeolites for the adsorption of hydrogen sulfide, a precursor to dimethyl sulfide, and discusses the material′s regeneration performance for industrial applications (Zha et al., 2024).

Safety Information

• Pictograms: GHS02
• Signal Word: Danger
• Hazard Statements: H225
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): -32.8 °F - closed cup
• Flash Point(C): -36 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves