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Sigma-Aldrich

Dimethyl ether

≥99%

Synonym(s):

DME, Methyl ether

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About This Item

Linear Formula:
(CH3)2O
CAS Number:
Molecular Weight:
46.07
Beilstein:
1730743
EC Number:
MDL number:
UNSPSC Code:
12142100
PubChem Substance ID:
NACRES:
NA.22

vapor density

1.62 (vs air)

Quality Level

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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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

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Flam. Gas 1A - Press. Gas Liquefied gas

Storage Class Code

2A - Gases

WGK

WGK 1

Flash Point(F)

-41.8 °F - closed cup

Flash Point(C)

-41 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, 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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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)
Dimethyl ether
Muller M, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
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)
Carbonylation of dimethyl ether over Co-HMOR.
Ma M,et al.
Catalysis Science & Technology, 8(8), 2124-2130 (2018)
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)

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