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538280 Sigma-Aldrich

Diethoxymethane

99.7%, contains 50-150 ppm BHT as stabilizer

Synonym: DEM, Diethoxymethane, Ethylal, Formaldehyde diethyl acetal

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Properties

Related Categories ReagentPlus, ReagentPlus Solvent Grade Products, ACS and Reagent Grade Solvents, Amber Glass Bottles, Solvent Bottles,
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

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).

Packaging

4 L in glass bottle

500 mL in glass bottle

Safety & Documentation

Safety Information

Symbol 
GHS02  GHS02
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 2373 3 / PGII
WGK Germany 
WGK 1
Flash Point(F) 
23.0 °F - closed cup
Flash Point(C) 
-5 °C - closed cup

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Peer-Reviewed Papers
15

References

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