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)
Product Name
Dimethoxymethane, ReagentPlus®, 99%
InChI
1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3
InChI key
NKDDWNXOKDWJAK-UHFFFAOYSA-N
SMILES string
COCOC
vapor density
2.6 (vs air)
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.)
Quality Level
Related Categories
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.
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.
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
Regulatory Information
危险化学品
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A photoacoustic study on Dimethoxymethane.
Bama GK and Ramachandran K.
AIP Conference Proceedings, 1004, 191-191 (2008)
The molecular structure of dimethoxymethane.
Astrup EE.
Acta Chemica Scandinavica, 27(9), 3271-3276 (1973)
Purification and dehydration of methylal by pervaporation.
Carretier E, et al.
Journal of Membrane Science , 217(1), 159-171 (2003)
A new strategy to microporous polymers: knitting rigid aromatic building blocks by external cross-linker.
Li B, et al.
Macromolecules, 44(8), 2410-2414 (2011)
An efficient protocol for the preparation of MOM ethers and their deprotection using zirconium (IV) chloride.
Sharma GVM, et al.
Tetrahedron Letters, 45(50), 9229-9232 (2004)
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