Ethyl methyl carbonate
EMC, Carbonic acid ethyl methyl ester, Methyl ethyl carbonate.
- CAS
- 623-53-0
- EC
- 433-480-9
- Sectors
- Electronics & Solar PV
Ethyl methyl carbonate (CAS 623-53-0) is an asymmetric carbonate ester solvent, a clear, colorless to almost colorless liquid available in Electronic Grade, used mainly as a co-solvent in lithium-ion battery electrolytes and as a methylating and ethylating agent in organic synthesis. It serves as a critical component in electrolyte formulations, providing the ideal balance of viscosity and dielectric constant to ensure efficient ion transport.
This asymmetric carbonate ester is valued for its superior electrochemical stability compared to symmetric carbonates, making it essential for high-performance electric vehicle (EV) batteries. As a Battery Grade solvent, it enhances low-temperature performance and extends the overall cycle life of rechargeable power cells.
Beyond energy applications, EMC acts as a versatile intermediate in organic synthesis and specialty chemical formulations requiring precise solvation properties. We supply this product with strict purity controls to meet the rigorous safety and quality standards demanded by the electronics and pharmaceutical sectors.
Typical Properties
| Molecular formula | C4H8O3 |
|---|---|
| Molecular weight | 104.1 g/mol |
| Form | clear liquid |
| Color | Colorless to Almost colorless |
| Melting point | -55 °C |
| Boiling point | 107 °C |
| Density | 1.00086 g/cm³ @ Temp: 30 °C |
| Water solubility | 46.8-47.1g/L at 20°C |
| Flash point | 23°C |
| GHS signal word | Danger · Flammable, Irritant / harmful |
| HS code | 29209090 |
| Grades available | Electronic Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Ethyl methyl carbonate
Applications
- Lithium-Ion Battery Electrolytes:Functions as a co-solvent to lower viscosity and improve the conductivity of electrolytes in EV and consumer electronic batteries.
- Chemical Synthesis: Used as a methylating and ethylating agent in the production of pharmaceuticals, agrochemicals, and other organic intermediates.
- Specialty Solvents: Acts as a high-performance solvent for resins, coatings, and adhesives where specific polarity and evaporation rates are required.
Safety & Risks
Ethyl methyl carbonate is a Flammable Liquid and vapor that must be stored in cool, well-ventilated areas away from ignition sources. Handlers must strictly adhere to safety protocols, utilizing PPE such as chemical-resistant gloves, safety goggles, and flame-retardant clothing to prevent skin contact and eye irritation.
Packaging
• 200 L Steel Drums
• 1000 L IBC Totes
• ISO Tanks / Bulk