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MilliporeSigma

752002

Sigma-Aldrich

Ethyl methyl carbonate

98%

Synonym(s):

Carbonic acid ethyl methyl ester, EMC, Methyl ethyl carbonate

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$101.00
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$192.00
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$342.00

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10 ML
$101.00
50 ML
$192.00
100 ML
$342.00

About This Item

Empirical Formula (Hill Notation):
C4H8O3
CAS Number:
Molecular Weight:
104.10
MDL number:
UNSPSC Code:
26111700
PubChem Substance ID:
NACRES:
NA.22

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$101.00


In StockDetails


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Quality Level

assay

98%

form

liquid

refractive index

n20/D 1.378

density

1.006 g/mL at 25 °C

functional group

carbonate

SMILES string

CCOC(=O)OC

InChI

1S/C4H8O3/c1-3-7-4(5)6-2/h3H2,1-2H3

InChI key

JBTWLSYIZRCDFO-UHFFFAOYSA-N

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1 of 4

This Item
754935809934381381
assay

98%

assay

99%

assay

99.9%

assay

98%

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

-

density

1.006 g/mL at 25 °C

density

1.006 g/mL at 25 °C

density

1.01 g/cm3

density

1.022 g/mL at 25 °C (lit.)

form

liquid

form

liquid

form

liquid

form

-

refractive index

n20/D 1.378

refractive index

n20/D 1.378

refractive index

-

refractive index

n20/D 1.406 (lit.)

functional group

carbonate

functional group

-

functional group

-

functional group

-

General description

Ethyl methyl carbonate (EMC) is the simplest asymmetric ester. It can be prepared via transesterification between dimethyl carbonate (DMC) and ethanol with mild reaction conditions. It is used as an intermediate for the synthesis of various compounds. Additionally, EMC is also used as an excellent co-solvent in the electrolyte of lithium-ion batteries.

Application

Ethyl methyl carbonate can be used as:      
  • A solvent for various reactions including esterification and amidation.   
  • An electrolyte in the development of graphite-based dual-ion batteries due to its ability reduces charge-transfer resistance, polarization, and self-discharge of graphite electrodes. It also enhances Coulombic efficiency, cycle, and rate performances.

pictograms

Flame

signalword

Danger

hcodes

Hazard Classifications

Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

75.0 °F

flash_point_c

23.9 °C


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  1. 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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  2. 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/449/386/product-dating-information-mk.pdf

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