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752002

Sigma-Aldrich

Ethyl methyl carbonate

98%

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Synonym(s):
Carbonic acid ethyl methyl ester, EMC, Methyl ethyl carbonate
Empirical Formula (Hill Notation):
C4H8O3
CAS Number:
Molecular Weight:
104.10
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

form

liquid

refractive index

n20/D 1.378

density

1.006 g/mL at 25 °C

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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This Item
80993475563PHR1207
Ethyl methyl carbonate 98%

752002

Ethyl methyl carbonate

Ethyl methyl carbonate battery grade, 99.9%, acid <10 ppm, H2O <10ppm

809934

Ethyl methyl carbonate

Ethyl butyrate analytical standard

75563

Ethyl butyrate

Methyl Ethyl Ketone Pharmaceutical Secondary Standard; Certified Reference Material

PHR1207

Methyl Ethyl Ketone

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

300

refractive index

n20/D 1.378

refractive index

-

refractive index

n20/D 1.392 (lit.), n20/D 1.393

refractive index

n20/D 1.379 (lit.)

form

liquid

form

liquid

form

-

form

-

density

1.006 g/mL at 25 °C

density

1.01 g/cm3

density

0.875 g/mL at 25 °C (lit.)

density

0.805 g/mL at 25 °C (lit.)

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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