Description

Ethyl Methyl Carbonate is a high-purity organic carbonate ester with the CAS number 623-53-0. This versatile solvent and chemical intermediate is valued for its excellent solvency power and favorable environmental profile compared to traditional solvents. It serves as a critical component for manufacturers in the pharmaceutical, agrochemical, battery electrolyte, and specialty chemical synthesis sectors, enabling advanced formulations and efficient reaction processes.

Application

• Lithium-ion Battery Electrolyte: A key co-solvent in electrolyte formulations, enhancing ionic conductivity and low-temperature performance.
• Pharmaceutical Synthesis: Used as a polar aprotic solvent and a protecting group reagent in the synthesis of active pharmaceutical ingredients (APIs).
• Agrochemical Formulations: Employed as a solvent and carrier in the production of pesticides, herbicides, and fungicides.
• Specialty Chemical Intermediate: Acts as a building block in transesterification and carbonylation reactions to produce other carbonates and polymers.
• Polymer and Resin Production: Serves as a solvent for polycarbonates, acrylics, and other specialty polymers.
• Industrial Cleaning & Degreasing: An effective component in precision cleaning formulations for electronics and metal parts due to its volatility and solvency.

Basic Information

Item	Details
Product Name	Ethyl Methyl Carbonate
CAS No.	623-53-0
Molecular Formula	C4H8O3
Molecular Weight	104.10 g/mol
Synonyms	EMC; Methyl Ethyl Carbonate; Carbonic Acid, Methyl Ethyl Ester; Ethyl Methyl Ester of Carbonic Acid; Ethoxy(methoxy)methanone; UN 3071 (Environmentally hazardous substance, liquid, n.o.s.)
EINECS	210-792-4

Quality Control

Our Ethyl Methyl Carbonate is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Production adheres to current industry best practices, and each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles. We support compliance with global regulatory frameworks including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials such as strong acids, bases, and oxidizing agents. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.5%
Water Content (KF)	≤ 0.05%
Acidity (as CH3COOH)	≤ 0.02%
Density (20°C)	1.005 - 1.025 g/cm³
Refractive Index (20°C)	1.380 - 1.384

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.