538280
二乙氧基甲烷
99.7%, contains 50-150 ppm BHT as stabilizer
别名:
二乙醇缩甲醛, 二乙氧基甲烷, 甲醛缩二乙醇
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关于此项目
线性分子式:
CH2(OC2H5)2
化学文摘社编号:
分子量:
104.15
UNSPSC Code:
12352112
NACRES:
NA.21
PubChem Substance ID:
EC Number:
207-330-6
Beilstein/REAXYS Number:
1697253
MDL number:
Assay:
99.7%
Bp:
87-88 °C (lit.)
Vapor pressure:
60 mmHg ( 25 °C)
vapor density
3.6 (vs air)
Quality Segment
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).
signalword
Danger
hcodes
Hazard Classifications
Flam. Liq. 2
存储类别
3 - Flammable liquids
flash_point_f
23.0 °F - closed cup
flash_point_c
-5 °C - closed cup