Ethyl methyl carbonate

Bezeichnung:Ethyl methyl carbonate

CAS-Nr623-53-0

Englisch Name:Ethyl methyl carbonate

CBNumberCB3459272

SummenformelC4H8O3

Molgewicht104.1

MOL-Datei623-53-0.mol

Ethyl methyl carbonate physikalisch-chemischer Eigenschaften

Schmelzpunkt	-14.5℃
Siedepunkt	107 °C
Dichte	1.006 g/mL at 25 °C
Dampfdruck	43hPa at 25℃
Brechungsindex	n20/D 1.378
Flammpunkt	23°C
storage temp.	2-8°C
Aggregatzustand	clear liquid
Farbe	Colorless to Almost colorless
Wasserlöslichkeit	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 Datenbank	623-53-0(CAS DataBase Reference)
NIST chemische Informationen	C2H5OCOOCH3(623-53-0)
EPA chemische Informationen	Carbonic acid, ethyl methyl ester (623-53-0)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	10-36/37/38
S-Sätze:	16-36/37-26
RIDADR	3272
WGK Germany	3
HazardClass	3
PackingGroup	III
HS Code	29209090

Gefahreninformationscode (GHS)

Ethyl methyl carbonate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
Beschreibung
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].
Verwenden
Non-aqueous solvent for Li-ion batteries
Verwenden
EMC is majorly utilized as a co-solvent in the nonaqueous electrolyte. It enhances the energy density and discharge capacity of lithium-ion batteries.
Verwenden
Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.
Allgemeine Beschreibung
This product has been enhanced for energy efficiency.
Advantages
Ethyl methyl carbonate enables the largest reversible capacity, best cycle stability, highest cycle Coulombic efficiency, lowest onset potential, smallest polarization, lowest self-discharge rate, and best rate performance from graphite compared to dimethyl carbonate and diethyl carbonate. Ethyl methyl carbonate forms a thinner layer of cathode electrolyte interface on the graphite surface with fewer Li–F and ROCO2Li species than with dimethyl carbonate and diethyl carbonate[2].
Einzelnachweise
[1] Guido N. Rimondino , Fabio E. Malanca, Jesús A. Vila . “Atmospheric oxidation of ethyl methyl carbonate: Kinetics and reaction mechanism.” Journal of Photochemistry and Photobiology A-chemistry 444 (2023): Article 114994.
[2] Yao Wang. “Unlocking the True Capability of Graphite-Based Dual-Ion Batteries with Ethyl Methyl Carbonate Electrolyte.” ACS Applied Energy Materials 2 10 (2019): 7512–7517.

Ethyl methyl carbonate Upstream-Materialien And Downstream Produkte

Ethyl methyl carbonate Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

623-53-0, Ethyl methyl carbonate Verwandte Suche:

Send Inquriy