538280

二乙氧基甲烷

99.7%, contains 50-150 ppm BHT as stabilizer

• 同義詞: 二乙醇缩甲醛, 二乙氧基甲烷, 甲醛缩二乙醇
• 線性公式: CH₂(OC₂H₅)₂
• CAS號碼: 462-95-3
• 分子量：: 104.15
• Beilstein: 1697253
• EC號碼: 207-330-6
• MDL號碼: MFCD00009246
• 分類程式碼代碼: 12352112
• PubChem物質ID: 329758005
• NACRES: NA.21
• 化驗: 99.7%
• bp: 87-88 °C (lit.)
• 蒸汽壓力: 60 mmHg ( 25 °C)

屬性

• 蒸汽密度: 3.6 (vs air)
• 品質等級: 200
• 蒸汽壓力: 60 mmHg ( 25 °C)
• 化驗: 99.7%
• 形狀: liquid
• 自燃溫度: 346 °F
• 包含: 50-150 ppm BHT as stabilizer
• expl. lim.: 8 %
• 折射率: n20/D 1.373 (lit.)
• bp: 87-88 °C (lit.)
• mp: -66.5 °C
• 密度: 0.831 g/mL at 25 °C (lit.)
• SMILES 字串: CCOCOCC
• InChI: 1S/C5H12O2/c1-3-6-5-7-4-2/h3-5H2,1-2H3
• InChI 密鑰: KLKFAASOGCDTDT-UHFFFAOYSA-N

描述

一般說明

Diethoxymethane (DEM) is a dialkoxymethane that can be synthesized by reacting ethanol and aqueous formaldehyde using macroporous cation-exchange resin Indion-130 as a catalyst. Infrared spectra of the conformers of DEM in various states have been obtained by matrix isolation infrared spectroscopy. The characteristic properties of DEM include low boiling point, low affinity for water, base stability and does not need drying for any reactions. Its infrared and Raman spectra have been reported.

應用

Diethoxymethane may be used as a substitute solvent to dichloromethane and toluene in the O-alkylation of different phenols in the presence of phase transfer catalysts (PTCs).

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）: 23.0 °F - closed cup
• 閃點（°C）: -5 °C - closed cup