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D134651

Sigma-Aldrich

Dimethoxymethane

ReagentPlus®, 99%

Synonym(s):
Methylal, Formaldehyde dimethyl acetal
Linear Formula:
CH2(OCH3)2
CAS Number:
Molecular Weight:
76.09
Beilstein:
1697025
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

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 %

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

Related Categories

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.

Packaging

1, 2.5 L in glass bottle
18 L in steel drum
100 mL in glass bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Pictograms

Flame

Signal Word

Danger

Hazard Statements

Hazard Classifications

Flam. Liq. 2

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

-0.4 °F - closed cup

Flash Point(C)

-18 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

The molecular structure of dimethoxymethane.
Astrup EE.
Acta Chemica Scandinavica, 27(9), 3271-3276 (1973)
A photoacoustic study on Dimethoxymethane.
Bama GK and Ramachandran K.
AIP Conference Proceedings, 1004, 191-191 (2008)
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)
Scandium trifluoromethanesulfonate as a recyclable catalyst for efficient methoxymethylation of alcohols.
Karimi B and Ma'mani L.
Tetrahedron Letters, 44(32), 6051-6053 (2003)

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