D134651
Dimethoxymethane
ReagentPlus®, 99%
Synonym(s):
Formaldehyde dimethyl acetal, Methylal
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About This Item
Linear Formula:
CH2(OCH3)2
CAS Number:
Molecular Weight:
76.09
UNSPSC Code:
12352100
NACRES:
NA.21
PubChem Substance ID:
EC Number:
203-714-2
Beilstein/REAXYS Number:
1697025
MDL number:
Assay:
99%
Bp:
41-42 °C (lit.)
Vapor pressure:
6.38 psi ( 20 °C)
vapor density
2.6 (vs air)
Quality Segment
vapor pressure
6.38 psi ( 20 °C)
product line
ReagentPlus®
assay
99%
form
liquid
autoignition temp.
459 °F
expl. lim.
17.6 %
dilution
(for general lab use)
refractive index
n20/D 1.354 (lit.)
bp
41-42 °C (lit.)
mp
−105 °C (lit.)
density
0.86 g/mL at 25 °C (lit.)
SMILES string
COCOC
InChI
1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3
InChI key
NKDDWNXOKDWJAK-UHFFFAOYSA-N
General description
Dimethoxymethane (DMM, methylal) is a biodegradable dimethyl acetal. It can be synthesized by acid catalyzed condensation of formaldehyde with methanol. It is amphiphilic in nature with low viscosity, surface tension and boiling point. It is a flammable, highly volatile solvent with good dissolving power. DMM is considered as a potential alternative fuel and fuel additive due to its high oxygen content and its ability to enhance the combustion characteristics of diesel and petrol. Its thermal diffusivity has been determined by photoacoustic method. Analysis of the molecular structure of DMM by electron diffraction technique shows that it has C2 symmetry with a gauche-gauche conformation.
Application
Dimethoxymethane (Formaldehyde dimethyl acetal) may be used in the synthesis of methoxymethyl (MOM) ethers. It may also be used as an external cross-linker to form microporous polymers.
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
signalword
Danger
hcodes
Hazard Classifications
Flam. Liq. 2
supp_hazards
Storage Class
3 - Flammable liquids
wgk
WGK 1
flash_point_f
-0.4 °F - closed cup
flash_point_c
-18 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves
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