528021

二甲基硫醚

• 同義詞: DMS, 甲硫醚
• 線性公式: (CH₃)₂S
• CAS號碼: 75-18-3
• 分子量：: 62.13
• Beilstein: 1696847
• EC號碼: 200-846-2
• MDL號碼: MFCD00008562
• 分類程式碼代碼: 12352200
• PubChem物質ID: 329757889

屬性

• 蒸汽密度: 2.1 (vs air)
• 蒸汽壓力: 26.24 psi ( 55 °C); 7.79 psi ( 20 °C)
• 化驗: ≥99%
• 自燃溫度: 402 °F
• expl. lim.: 19.7 %
• 存貨情形: available only in EU
• 折射率: n20/D 1.435 (lit.)
• bp: 38 °C (lit.)
• mp: −98 °C (lit.)
• 溶解度: water: soluble 7.28 g/L at 20 °C
• 密度: 0.846 g/mL at 25 °C (lit.)
• 儲存溫度: 2-8°C
• SMILES 字串: CSC
• InChI: 1S/C2H6S/c1-3-2/h1-2H3
• InChI 密鑰: QMMFVYPAHWMCMS-UHFFFAOYSA-N

描述

一般說明

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

應用

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

法律資訊

Arkema 产品

安全資訊

• 象形圖: GHS02
• 訊號詞: Danger
• 危險聲明: H225
• 防範說明: P210 - P233 - P240 - P241 - P242 - P243
• 危險分類: Flam. Liq. 2
• 儲存類別代碼: 3 - Flammable liquids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: -32.8 °F - closed cup
• 閃點（°C）: -36 °C - closed cup
• 個人防護裝備: Eyeshields, Faceshields, Gloves