Methyl ethyl Carbonate

Synonyms：EMC, Ethyl methyl carbonate; Carbonic acid ethyl methyl ester

CAS No.：623-53-0

EINECS No.：208-760-1

Molecular Formula：C₄H₈O₃

Molecular Weight：104.1045

Structure Formula：

Standard：

Properties：Methyl ethyl carbonate is a colorless transparent liquid. Relative density : 1.015g/cm³, Melting point: -14.5℃, Boiling point: 90℃, Flash point: 23℃, Refractive index(n20/D): 1.368, Soluble in alcohol, ether and other organic solvents, insoluble in water.

Applications：Ethyl Methyl Carbonate (EMC, CAS 623-53-0) is widely used in new energy, chemical, pharmaceutical and other high-value fields due to its excellent solubility, environmental friendliness and other outstanding properties. Its core applications are as follows:

1. Lithium Battery Field: As a key solvent for lithium-ion battery electrolytes, it combines the advantages of dimethyl carbonate (DMC) and diethyl carbonate (DEC), featuring strong solubility for lithium salts and improved ionic conductivity of electrolytes. It effectively enhances lithium battery performance, including charge-discharge efficiency, cycle life, energy density and discharge capacity. It is extensively applied in lithium batteries for new energy vehicles (NEVs), portable electronic devices and energy storage systems.
2. Plastics & Synthetic Materials Field: As an important raw material, it is used in the production of polymer materials such as polycarbonate (PC), polyester and polyurethane (PU), enhancing plastic transparency, impact resistance and flexibility. It also serves as a plasticizer for polyvinyl chloride (PVC) and other plastics, suitable for manufacturing high-performance plastic products like electronic casings, automotive parts and medical devices.
3. Coatings, Inks & Chemical Solvents Field: Its excellent solubility and fluidity improve the performance of coatings, inks and adhesives—enhancing coating adhesion, durability and drying speed. Additionally, it is used as an additive for gasoline/diesel, developer, and solvent for cellulose and resins. It is also applied in paint additives and chemical cleaning agents, with low toxicity meeting the demand for environmentally friendly solvents.
4. Pharmaceutical & Fragrance Field: In pharmaceuticals, it acts as an intermediate in the synthesis of cardiovascular drugs, anti-infective drugs, antibiotics and hormone intermediates. In the fragrance industry, it is used to synthesize citral, nerol and other fragrances, which are further utilized in flavor formulation for food and daily chemical products.
5. Pesticide & Emerging Fields: In pesticide production, it serves as a solvent or carrier to improve pesticide solubility and stability, ensuring application effectiveness. It is also used in manufacturing plant growth regulators to boost crop yields. Furthermore, it is applied in semiconductor packaging materials to enhance electronic product reliability and holds great potential in emerging environmental fields such as biodegradable materials.

Storage：Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat source. Store separately with oxidants, reducing agents, acids, etc.

Packing：200kg galvanized iron drum