Ethyl Methyl Carbonate , 98% , 623-53-0

Synonym(s):
Carbonic acid ethyl methyl ester;EMC;Methyl ethyl carbonate

CAS NO.：623-53-0

Empirical Formula: C4H8O3

Molecular Weight: 104.1

MDL number: MFCD00191398

EINECS: 208-760-7

PRODUCT Properties

• Melting point: -14.5℃
• Boiling point: 107 °C
• Density: 1.006 g/mL at 25 °C
• vapor pressure: 43hPa at 25℃
• refractive index: n20/D 1.378
• Flash point: 23°C
• storage temp.: 2-8°C
• form: clear liquid
• color: Colorless to Almost colorless
• Water Solubility: 46.8-47.1g/L at 20℃
• InChI: InChI=1S/C4H8O3/c1-3-7-4(5)6-2/h3H2,1-2H3
• InChIKey: JBTWLSYIZRCDFO-UHFFFAOYSA-N
• SMILES: C(OC)(=O)OCC
• LogP: 0.972 at 40℃
• CAS DataBase Reference: 623-53-0(CAS DataBase Reference)
• NIST Chemistry Reference: C2H5OCOOCH3(623-53-0)
• EPA Substance Registry System: Carbonic acid, ethyl methyl ester (623-53-0)

Description and Uses

Ethyl methyl carbonate (EMC) is an asymmetric aliphatic organic carbonate. It is a colorless transparent liquid widely used as an excellent solvent for lithium-ion battery electrolytes. EMC increases the solubility of lithium ions improving the capacity density and power of batteries. This compound has excellent thermal conductivity and low electrical resistance, extending the working temperature range of electrolytes, improving lithium batteries' safety, and prolonging their service life. EMC is usually obtained by metal oxide-catalyzed transesterification over dimethyl carbonate and diethyl carbonate. High percentage yields are obtained if the reaction is carried out in liquid or vapor phase[1].

Alkyl carbonates find applications as solvents for lithium-ion battery electrolytes, and the use of high-quality battery grade electrolytes having shallow water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance. Ethyl methyl carbonate is majorly utilized as a co-solvent in the nonaqueous electrolyte. It enhances the energy density and discharge capacity of lithium-ion batteries.

Safety

• Symbol(GHS): GHS02
• Signal word: Danger
• Hazard statements: H225
• Precautionary statements: P210
• Hazard Codes: Xi
• Risk Statements: 10-36/37/38
• Safety Statements: 16-36/37-26
• RIDADR: 3272
• WGK Germany: 3
• HazardClass: 3
• PackingGroup: III
• HS Code: 29209090