Description
Description
Diethoxymethane 99.7% Contains 50-150 ppm BHT 500mL
Synonym: DEM, Diethoxymethane, Ethylal, Formaldehyde diethyl acetal
- CAS Number 462-95-3
- Linear Formula CH2(OC2H5)2
- Molecular Weight 104.15
- Beilstein/REAXYS Number 1697253
- EC Number 207-330-6
- MDL number MFCD00009246
- PubChem Substance ID 329758005
| vapor density | 3.6 (vs air) |
| vapor pressure | 60 mmHg ( 25 °C) |
| assay | 99.7% |
| 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 |
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).
HS02
Signal word Danger
Hazard statements H225
Precautionary statements P210-P370 + P378-P403 + P235
RIDADR UN 2373 3 / PGII
WGK Germany 1
Flash Point(F) 23 °F
Flash Point(C) -5 °C
Documents
Safety Data Sheet
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