Formaldehyde diethyl acetal
ALDRICH/47675 - absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC)
Synonym: Diethoxymethane; Ethylal
CAS Number: 462-95-3
Empirical Formula (Hill Notation): C5H12O2
Molecular Weight: 104.15
EC Number: 207-330-6
MDL Number: MFCD00009246
Linear Formula: CH2(OC2H5)2
Product Type: Chemical
| assay | ≥99.0% (GC) |
| autoignition temp. | 346 °F |
| bp | 87-88 °C (lit.) |
| density | 0.831 g/mL at 25 °C (lit.) |
| form | liquid |
| grade | absolute |
| InChI | 1S/C5H12O2/c1-3-6-5-7-4-2 |
| InChI key | KLKFAASOGCDTDT-UHFFFAOYSA |
| quality | over molecular sieve (H2O ≤0.01%) |
| refractive index | n |
| n |
|
| SMILES string | CCOCOCC |
| vapor density | 3.6 (vs air) |
| vapor pressure | 60 mmHg ( 25 °C) |
| Application: | Formaldehyde diethyl acetal may be used as a solvent in the esterification of carboxylic acids and in the O-alkylation of a variety of phenols. |
| General description: | Formaldehyde diethyl acetal (FDEA, diethoxymethane, DEM) is a diethyl acetal. It has been synthesized from ethanol and aqueous formaldehyde. It is a low boiling solvent useful for sodium hydride reactions, organolithium chemistry, copper-catalyzed conjugate additions and phase-transfer reactions. It is a potential alternate for tetrahydrofuran, dichloromethane, glyme and methylal. DEM is an ethoxymethylating agent, a formaldehyde equivalent and a carbonylation substrate. Its condensation with 2-propylresorcinol to form resorcin[n]arenes (n=4–7) has been investigated. The IR and Raman spectra and conformations of DEM have been studied. NMR spectroscopy has been used to study the aggregation behavior of organolithium compounds in diethoxymethane. Unimolecular metastable decomposition of DEM upon electron impact has been studied. Solubility of non-polar gases in DEM has been evaluated. |
| Packaging: | 100, 500 mL in Sure/Seal™ |
| Symbol |  GHS02 |
| Signal word | Danger |
| Hazard statements | H225 |
| Precautionary statements | P210 - P370 + P378 - P403 + P235 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36/37/38 |
| Safety Statements | 16-26-36 |
| RIDADR | UN 2373 3 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 23.0 °F - closed cup |
| Flash Point(C) | -5 °C - closed cup |
| Purity | ≥99.0% (GC) |
| bp | 87-88 °C (lit.) |
| Density | 0.831 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352100 |