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MilliporeSigma

295299

Dimethyl ether

≥99%

Synonym(s):

DME, Methyl ether

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$210.00

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$282.00

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$604.00

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About This Item

Linear Formula:
(CH3)2O
CAS Number:
115-10-6
Molecular Weight:
46.07
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
24857771
EC Number:
204-065-8
Beilstein/REAXYS Number:
1730743
MDL number:
MFCD00008494
Assay:
≥99%

Key Documents

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InChI key

LCGLNKUTAGEVQW-UHFFFAOYSA-N

InChI

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

SMILES string

COC

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.)

functional group

ether

Quality Level

100

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This Item
EX01851.0092624004
Dimethyl ether ≥99%

Sigma-Aldrich

295299

Dimethyl ether

Ethyl Ether Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Supelco

EX0185

Ethyl Ether

Diethyl ether EMPROVE® ESSENTIAL, Ph. Eur., BP

SAFC

1.00926

Diethyl ether

Diethyl ether puriss., contains ~5 mg/L 2,6-di-tert.-butyl-4-methylphenol as stabilizer, meets analytical specification of Ph. Eur., BP, ≥99.5% (GC)

Sigma-Aldrich

24004

Diethyl ether

assay

≥99%

assay

≥98.0% ethanol basis (diethyl ether)

assay

≥99.5% (GC)

assay

≥99.5% (GC)

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.[1][2][3]

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.[1]
Dimethyl ether (DME) can be used as a precursor to synthesize methyl acetate,[4][5][6] oligomeric oxymethylene ethers (OMEs),[7] polyoxymethylene dimethyl ethers (DMMx)[8] and light olefins.[9]

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

related product

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Description
Pricing

used together

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Description
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pictograms

FlameGas cylinder
GHS02,GHS04

signalword

Danger

hcodes

H220,H280

Hazard Classifications

Flam. Gas 1A - Press. Gas Liquefied gas

Storage Class

2A - Gases

wgk

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)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBS6635
SHBS1412
SHBR0426
SHBQ2999
SHBN9987

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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)
The carbonylation of dimethyl ether catalyzed by supported heteropoly acids: The role of Br?nsted acid properties.
Shen H, et al.
Catalysis Today (2018)
Carbonylation of dimethyl ether over Co-HMOR.
Ma M,et al.
Catalysis Science & Technology, 8(8), 2124-2130 (2018)
Dimethyl ether
Muller M, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
View All Related Papers

Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. Is there a configuration of this product that can dispense liquid DME, such as a siphon tank, or an adapter that we can order to achieve this goal?

    1 answer

    1. This product is packaged in a Sure/Pac™ cylinder. The necessary accessories compatible with this product include the following: Aldrich® Sure/Pac™ station for liquefied gases Z566446, PTFE Sealing tape Z104388 or Z221880, Brass hose adapter Z146811, and Aldrich® mini gas regulator Z513539.

      Helpful?

  3. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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