471577

Sulfure de diméthyle

≥99%

• Synonyme(s) : DMS, Sulfure de méthyle
• Formule linéaire : (CH₃)₂S
• Numéro CAS: 75-18-3
• Poids moléculaire : 62.13
• Beilstein: 1696847
• Numéro CE : 200-846-2
• Numéro MDL: MFCD00008562
• Code UNSPSC : 12352100
• ID de substance PubChem : 57650900
• Nomenclature NACRES : NA.21

Propriétés

• Densité de vapeur: 2.1 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 26.24 psi ( 55 °C); 7.79 psi ( 20 °C)
• Essai: ≥99%
• Température d'inflammation spontanée: 402 °F
• Limite d'explosivité: 19.7 %
• Indice de réfraction: n20/D 1.435 (lit.)
• pb: 38 °C (lit.)
• Pf: −98 °C (lit.)
• Solubilité: water: soluble 7.28 g/L at 20 °C
• Densité: 0.846 g/mL at 25 °C (lit.)
• Groupe fonctionnel: thioether
• Chaîne SMILES: CSC
• InChI: 1S/C2H6S/c1-3-2/h1-2H3
• Clé InChI: QMMFVYPAHWMCMS-UHFFFAOYSA-N
• Informations sur le gène: rat ... Maoa(29253) , Maob(25750)

Description

Description générale

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).

Informations sur la sécurité

• Pictogrammes: GHS02
• Mention d'avertissement: Danger
• Mentions de danger: H225
• Conseils de prudence: P210 - P233 - P240 - P241 - P242 - P243
• Classification des risques: Flam. Liq. 2
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): -32.8 °F - closed cup
• Point d'éclair (°C): -36 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves