528021

Dimetilsulfuro

• Sinónimos: DMS, Sulfuro de metilo
• Fórmula lineal: (CH₃)₂S
• Número de CAS: 75-18-3
• Peso molecular: 62.13
• Beilstein: 1696847
• Número CE: 200-846-2
• Número MDL: MFCD00008562
• Código UNSPSC: 12352200
• ID de la sustancia en PubChem: 329757889

Propiedades

• densidad de vapor: 2.1 (vs air)
• presión de vapor: 26.24 psi ( 55 °C); 7.79 psi ( 20 °C)
• Ensayo: ≥99%
• temp. de autoignición: 402 °F
• lim. expl.: 19.7 %
• disponibilidad: available only in EU
• índice de refracción: n20/D 1.435 (lit.)
• bp: 38 °C (lit.)
• mp: −98 °C (lit.)
• solubilidad: water: soluble 7.28 g/L at 20 °C
• densidad: 0.846 g/mL at 25 °C (lit.)
• temp. de almacenamiento: 2-8°C
• cadena SMILES: CSC
• InChI: 1S/C2H6S/c1-3-2/h1-2H3
• Clave InChI: QMMFVYPAHWMCMS-UHFFFAOYSA-N

Descripción

Descripción general

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 constants of the gas phase reaction between OH radicals and DMS have been determined by relative rate method and flash photolysis.[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]

Aplicación

Dimethyl sulfide may be used to prepare methanethiol by thiolation reaction with hydrogen sulfide (H₂S) in the presence of tungsten-zirconia (WO₃/ZrO₂) catalyst.[6]

Información legal

Product of Arkema

Información de seguridad

• Pictogramas: GHS02
• Palabra de señalización: Danger
• Frases de peligro: H225
• Consejos de prudencia: P210 - P233 - P240 - P241 - P242 - P243
• Clasificaciones de peligro: Flam. Liq. 2
• Código de clase de almacenamiento: 3 - Flammable liquids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): -32.8 °F - closed cup
• Punto de inflamabilidad (°C): -36 °C - closed cup
• Equipo de protección personal: Eyeshields, Faceshields, Gloves