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295299

Sigma-Aldrich

Dimethyl ether

≥99%

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Synonym(s):
DME, Methyl ether
Linear Formula:
(CH3)2O
CAS Number:
Molecular Weight:
46.07
Beilstein/REAXYS Number:
1730743
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor density

1.62 (vs air)

vapor pressure

>760 mmHg ( 25 °C)

assay

≥99%

autoignition temp.

662 °F

expl. lim.

27 %

bp

−24.8 °C (lit.)

mp

−141 °C (lit.)

SMILES string

COC

InChI

1S/C2H6O/c1-3-2/h1-2H3

InChI key

LCGLNKUTAGEVQW-UHFFFAOYSA-N

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1 of 4

This Item
EX01851.0092624004
vibrant-m

295299

Dimethyl ether

vibrant-m

EX0185

Ethyl Ether

vibrant-m

1.00926

Diethyl ether

vibrant-m

24004

Diethyl ether

Quality Level

100

Quality Level

200

Quality Level

500

Quality Level

200

mp

−141 °C (lit.)

mp

−116 °C (lit.)

mp

−116 °C (lit.)

mp

−116 °C (lit.)

bp

−24.8 °C (lit.)

bp

34.6 °C (lit.)

bp

34.6 °C (lit.)

bp

34.6 °C (lit.)

vapor density

1.62 (vs air)

vapor density

2.6 (vs air)

vapor density

2.6 (vs air)

vapor density

2.6 (vs air)

vapor pressure

>760 mmHg ( 25 °C)

vapor pressure

587 hPa ( 20 °C)

vapor pressure

587 hPa ( 20 °C)

vapor pressure

-

General description

Dimethyl ether (DME) is the simplest aliphatic ether used as a reactant as well as a solvent in organic synthesis. It is used as a precursor for the preparation of important useful organic compounds. DME is also used as an aerosol propellant.

Application

DME can be used as precursor for the production dimethyl sulfate by treatment with sulfur trioxide. Dimethyl sulfate is employed as a versatile methylating agent in chemical synthesis. It is also used as a starting material for preparation of dimethyl sulfide, acetic acid, unsaturated and saturated hydrocarbons, and formadehyde.
Dimethyl ether (DME) can be used as a precursor to synthesize methyl acetate, oligomeric oxymethylene ethers (OMEs), polyoxymethylene dimethyl ethers (DMMx) and light olefins.

Packaging

Supplied in a Sure/Pac cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve.

Compatible with the following:

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

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pictograms

FlameGas cylinder

signalword

Danger

Hazard Classifications

Flam. Gas 1A - Press. Gas Liquefied gas

Storage Class

2A - Gases

wgk_germany

WGK 1

flash_point_f

-41.8 °F - closed cup

flash_point_c

-41 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)


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Customers Also Viewed

Slide 1 of 3

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Nature and Location of Carbonaceous Species in a Composite HZSM-5 Zeolite Catalyst during the Conversion of Dimethyl Ether into Light Olefins.
Iba?ez M, et al.
Catalysts, 7(9), 254-254 (2017)
Synthesis of Polyoxymethylene Dimethyl Ethers from Dimethyl Ether Direct Oxidation over Carbon?Based Catalysts.
Gao X-Y, et al.
ChemCatChem, 10(1), 273-279 (2018)
Dimethyl ether
Muller M, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
Dimethyl ether carbonylation to methyl acetate over highly crystalline zeolite seed-derived ferrierite.
Kim J, et al.
Catalysis Science & Technology, 8(12), 3060-3072 (2018)
Heterogeneously catalyzed synthesis of oxymethylene dimethyl ethers (OME) from dimethyl ether and trioxane.
Haltenort P, et al.
Catalysis Communications, 109, 80-84 (2018)

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