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Sigma-Aldrich

Formaldehyde dimethyl acetal

absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC)

Synonym(s):

Dimethoxymethane, Methylal

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About This Item

Linear Formula:
CH2(OCH3)2
CAS Number:
109-87-5
Molecular Weight:
76.09
Beilstein/REAXYS Number:
1697025
EC Number:
203-714-2
MDL number:
MFCD00008495
UNSPSC Code:
12352100
PubChem Substance ID:
57651079
NACRES:
NA.22

grade

absolute

assay

≥99.0% (GC)

quality

over molecular sieve (H2O ≤0.01%)

refractive index

n20/D 1.354

density

0.860 g/mL at 20 °C (lit.)

SMILES string

COCOC

InChI

1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3

InChI key

NKDDWNXOKDWJAK-UHFFFAOYSA-N

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General description

Formaldehyde dimethyl acetal (FDA, FDMA, FADMA, dimethoxymethane, DMM, methylal) is a biodegradable dimethyl acetal. It has been synthesized by condensing formaldehyde with methanol in the presence of acid catalyst. It is amphiphilic in nature with low viscosity, surface tension and boiling point. It is a flammable, highly volatile solvent with excellent dissolving power. It is reported to form trimethylorthoformate by anodic methoxylation in basic methanol.

Application

Formaldehyde dimethyl acetal may be used in the following studies:
  • Synthesis of methoxymethyl (MOM) ethers.
  • As an external cross-linker to form microporous polymers.
  • Dehydration of biological samples for scanning electron microscopy (SEM).

pictograms

Flame
GHS02

signalword

Danger

hcodes

H225

Hazard Classifications

Flam. Liq. 2

supp_hazards

EUH019

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

-0.4 °F - closed cup

flash_point_c

-18 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Electrosynthesis of trimethylorthoformate on BDD electrodes.
Fardel R, et al.
J. Appl. Electrochem., 36(2), 249-253 (2006)
V Venkatesan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 58(3), 467-478 (2002-03-22)
Conformations of dimethoxymethane (DMM) were studied using matrix isolation infrared spectroscopy. DMM was trapped in an argon matrix using an effusive source at 298, 388 and 430 K. Experiments were also done using a supersonic jet source to look for
[Gas chromatographic determination of methylal in atmospheric air].
N P Zinov'eva et al.
Gigiena i sanitariia, (9)(9), 82-83 (1990-09-01)
[Methylal: its metabolism and hygienic standardization in the air of work areas].
L A Tomilina et al.
Gigiena truda i professional'nye zabolevaniia, (6)(6), 27-29 (1984-06-01)
The toxicity of methylal.
F L WEAVER et al.
British journal of industrial medicine, 8(4), 279-283 (1951-10-01)
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