538280

Diethoxymethane

99.7%, contains 50-150 ppm BHT as stabilizer

• Synonym(s): Formaldehyde diethyl acetal, Diethoxymethane, Ethylal
• Linear Formula: CH₂(OC₂H₅)₂
• CAS Number: 462-95-3
• Molecular Weight: 104.15
• Beilstein: 1697253
• EC Number: 207-330-6
• MDL number: MFCD00009246
• UNSPSC Code: 12352112
• PubChem Substance ID: 329758005
• NACRES: NA.21

Properties

• vapor density: 3.6 (vs air)
• Quality Level: 200
• vapor pressure: 60 mmHg ( 25 °C)
• Assay: 99.7%
• form: liquid
• autoignition temp.: 346 °F
• contains: 50-150 ppm BHT as stabilizer
• expl. lim.: 8 %
• refractive index: n20/D 1.373 (lit.)
• bp: 87-88 °C (lit.)
• mp: -66.5 °C
• density: 0.831 g/mL at 25 °C (lit.)
• SMILES string: CCOCOCC
• InChI: 1S/C5H12O2/c1-3-6-5-7-4-2/h3-5H2,1-2H3
• InChI key: KLKFAASOGCDTDT-UHFFFAOYSA-N

Description

General description

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.

Application

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).

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