Ethyl methyl carbonate
Methylethylcarbonate · EthylMethylCarbonate(Emc) · Carbonic acid methyl ethyl · Carbonic acid ethyl methyl · Ethoxyacetic acid, methyl ester · Carbonic acid methyl ethyl ester · CARBONIC ACID ETHYL METHYL ESTER · carbonicacidethylestermethylester
Identifikatoren & physikalische Daten
| CAS No. | 623-53-0 |
|---|---|
| Summenformel | C4H8O3 |
| Durchschnittliche Molmasse | 104,1 g/mol |
| Monoisotopische Masse | 104,04734411 g/mol |
| SMILES | CCOC(=O)OC |
| InChIKey | JBTWLSYIZRCDFO-UHFFFAOYSA-N |
| PubChem CID | 522046 |
| EC No. | 433-480-9 |
| DTXSID | DTXSID6074592 |
Chemische & physikalische Eigenschaften
| XLogP | 0,9 |
|---|---|
| Polarare Oberfläche (TPSA) | 35,5 |
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 3 |
| Frei drehbare Bindungen | 3 |
| Schwere Atome | 7 |
| Formalladung | 0 |
| Komplexität | 60 |
| Physical Description | LiquidCBI |
| 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 |
| Lagerbedingungen | 2-8°C |
| Aggregatzustand | clear liquid |
| Farbe | Colorless to Almost colorless |
| Löslichkeit | 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 (Verteilungskoeffizient) | 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 & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 7.9% (15 of 189) of reports.DangerH225 (92.1%): Highly Flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 189 reports by companies from 2 notifications to the ECHA C&L Inventory.Reported as not meeting GHS hazard criteria per 15 of 189 reports by companies.There is 1 notification provided by 174 of 189 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. |
|---|---|
| Regulatorische Informationen | Carbonic acid, ethyl methyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Carbonic acid, ethyl methyl ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 04-10-2011 https://echa.europa.eu/registration-dossier/-/registered-dossier/8109Status: Active Update: 29-10-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/5747Status: Active Update: 07-07-2011 https://echa.europa.eu/registration-dossier/-/registered-dossier/12928Status: Cease Manufacture Update: 15-09-2011 https://echa.europa.eu/registration-dossier/-/registered-dossier/1897Status: Cease Manufacture Update: 12-07-2011 https://echa.europa.eu/registration-dossier/-/registered-dossier/6708 |
| Hazard Classes and Categories | Flam. Liq. 2 (39.5%)Flam. Liq. 3 (59.7%)Skin Irrit. 2 (55.6%)Eye Irrit. 2 (56.5%)STOT SE 3 (34.7%)Flam. Liq. 2 (92.1%) |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status |
Anwendungen & Verwendung
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