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Ethyl Methyl Carbonate

Catalog Number
ACM623530
CAS Number
623-53-0
Product Name
Ethyl Methyl Carbonate
Structure
Category
Electrolytes; Lithium-Ion Batteries; Battery Materials
Synonyms
Carbonic Acid Ethyl Methyl Ester
Description
Liquid
IUPAC Name
ethyl methyl carbonate
Molecular Weight
104.11
Molecular Formula
C4H8O3
Canonical SMILES
CCOC(=O)OC
InChI
InChI=1S/C4H8O3/c1-3-7-4(5)6-2/h3H2,1-2H3
InChI Key
JBTWLSYIZRCDFO-UHFFFAOYSA-N
Boiling Point
107 °C
Flash Point
27 °C
Purity
>98.0%(GC)
Appearance
Colorless to Almost colorless clear liquid
Application
Ethyl methyl carbonate (EMC) serves as a crucial component in the realm of lithium-ion batteries, primarily functioning as a high-quality co-solvent in nonaqueous electrolytes. This colorless, transparent liquid, characterized by its slight irritant odor, plays a pivotal role in enhancing the performance of such batteries. By increasing the solubility of lithium ions, EMC significantly boosts both the energy density and discharge capacity of the batteries. Furthermore, its excellent thermal conductivity and low electrical resistance help in extending the operational temperature range, thereby improving the overall safety and longevity of the battery systems. Its synthesis often involves metal oxide-catalyzed transesterification using dimethyl carbonate and diethyl carbonate, achieving high yields in either liquid or vapor phase reactions. Overall, EMC is vital for improving the electrochemical performance of lithium-ion batteries, due to its ability to enhance the battery's capacity and efficiency while ensuring safety and durability.
Complexity
60
Covalently-Bonded Unit Count
1
EC Number
433-480-9;613-014-2
Exact Mass
104.047344g/mol
Formal Charge
0
Hazard Statements
H226 : Flammable liquid and vapor.
Heavy Atom Count
7
MDL Number
MFCD00191398
Monoisotopic Mass
104.047344g/mol
Precautionary Statements
P501 : Dispose of contents/ container to an approved waste disposal plant.P240 : Ground/bond container and receiving equipment.P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking.P233 : Keep container tightly closed.P243 : Take precautionary measures against static discharge.P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment.P242 : Use only non-sparking tools.P280 : Wear protective gloves/ eye protection/ face protection.P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.P403 + P235 : Store in a well-ventilated place. Keep cool.
Refractive Index
1.38
Rotatable Bond Count
3
Signal Word
Warning
Specific Gravity
1.01
UNII
OU358HAE25
XLogP3
0.9
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