 |
| Synonyms:Ethyl carbonate Carbonic acid diethyl ester Diethyl carbonate ester Molecular Formula: C5H10O3 Molecular Weight: 118.13 HS Code: 2920900090 Grade: Industrial grade Battery grade Hazard Class:Class 3 | |||||||||
105-58-8
bosschemical
105-58-8
Diethyl carbonate (DEC) is an ethanol carbonate, belonging to the chain carbonate family. It is also an important co-solvent in lithium battery electrolytes. Its chemical formula is usually written as:
C5H10O3 (CAS No.: 105-58-8, molecular weight approximately 118.13)
It is a colorless, transparent liquid at room temperature with a slightly pungent odor (ether-like smell). Its melting point is approximately -43°C, boiling point approximately 126.8°C, relative density 0.975, refractive index 1.3846, and flash point (closed cup) approximately 32.8°C. Diethyl carbonate is insoluble in water but miscible with most organic solvents, including alcohols, ketones, esters, and aromatic hydrocarbons.
From a molecular structure perspective, diethyl carbonate molecules consist of a carbonate group (OC(=O)-O) linked to two ethyl groups, belonging to a symmetrical chain carbonate. Its low viscosity makes it an important component in electrolytes for improving low-temperature fluidity; the good solubility of the ester group makes it an excellent solvent for resins and cellulose; and it is also an environmentally friendly, low-toxicity solvent—this multifaceted identity as a "low-viscosity cosolvent + broad-spectrum solvent + green chemical intermediate" forms the functional basis for its application in both scientific research and consumer fields.
Chemically, diethyl carbonate is relatively stable, but flammable (flash point approximately 32.8°C). Its vapor can form explosive mixtures with air, so it must be kept away from sources of ignition. It is incompatible with strong oxidizers and strong reducing agents. It should be stored in a sealed, fire-proof, and moisture-proof container.
Non-electronic and Non-industrial grade diethyl carbonate refers to products for scientific research and consumer applications, mainly including reagent grade specifications. These specifications are far more concerned with the following indicators than with electronic and industrial grades:
Purity and Impurity Control
To ensure the accuracy of experimental results, reagent-grade reagents are generally required to have a main content of 99% or higher (GC) and control of impurities such as moisture and alcohols.
Boiling point and density
Common indicators to judge the purity are boiling point (about 126.8°C) and density (0.975) and they should be in the specified range.
Moisture
Moisture content affects the stability of the synthesis reaction and experiments, and needs to be kept at a low level.
Color
It should be colorless and transparent; abnormal color often indicates impurities or oxidation.
Diethyl carbonate is a commonly used chain carbonate reagent in the laboratory. It can be used as a solvent and carbonate reagent in organic synthesis (introducing ethoxycarbonyl groups). It is also an important medium for green chemistry, solvent substitution and polymer dissolution research. High-purity grades are used in scientific research experiments with strict purity requirements.
Diethyl carbonate is an important cosolvent for lithium battery electrolyte. With low viscosity, it can reduce the viscosity of the electrolyte when mixed with cyclic carbonates such as ethylene carbonate (EC), improve the migration rate of lithium ions, and significantly improve the low-temperature performance and rate performance of the battery. It is a key component of electrolyte formulations for lithium batteries in mobile phones, electric vehicles and other applications.
Electronic-grade diethyl carbonate is often compounded with ethylene carbonate (EC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), etc., to form electrolyte mixed solvents, which take into account high dielectric constant, low viscosity and wide temperature range performance to meet the different application requirements of power batteries, energy storage batteries and other applications.
Diethyl carbonate is soluble in a wide variety of polymer material. High purity electronic grade products can be used for precision cleaning of electronic components, helping to remove processing residues, ensuring the performance and reliability of electronic devices.
Diethyl carbonate is also an important solvent and reference system in the research of new battery systems such as solid electrolytes and sodium-ion batteries, supporting the development of next generation energy storage technologies.
Diethyl carbonate is biodegradable and has a low toxicity. It is a green solvent that can replace the traditional toxic solvents such as toluene and xylene. It is used as solvent for nitrocellulose, resins and inks, as industrial cleaning agent and is applied in coatings, paints and inks.
Diethyl carbonate participates in transesterification, carbonate esterification and other reactions, and is used to synthesize polycarbonates and functional carbonate fine chemicals. It is an important raw material in the organic synthesis industry chain.
Dethyl carbonate has high oxygen content, is low in toxicity and can be used as an oxygenated additive in petrol to help improve combustion performance, increase octane rating and reduce exhaust emissions as a potential component for clean fuels.
It has excellent solubility properties and low toxicity . Diethyl carbonate can be used as a green solvent for cleaning purposes to remove adhesive residues, grease stains and inks in everyday cleaning situations which makes it a good component for “ green ” household cleaners.
Diethyl carbonate, in chemical teaching demonstrations and experiments, can be used to assist learners in comprehending the structure, properties and reactions of carbonates. It is a common teaching reagent in college chemistry laboratories.
Diethyl carbonate (DEC) is a colourless, transparent, chain carbonate liquid with low viscosity, high solubility and low toxicity. It is an important co-solvent and green solvent for lithium battery electrolytes. “From the chain of lithium batteries in mobile phones, laptops, new energy vehicles, and environmentally friendly coatings, we are indirectly in contact with it in daily life. Reagent-grade diethyl carbonate is widely used in scientific research and laboratories, fine chemicals, household cleaning and DIY, model making, and teaching experiments, in addition to electronics and industry. It is an important carbonate product connecting “daily use” with “scientific research, health, and consumption.”
