Description

Ethylene Carbonate (CAS 96-49-1) is a high-purity cyclic carbonate ester with the molecular formula C₃H₄O₃, widely utilized in advanced electrochemical and industrial applications. This colorless, crystalline solid (or liquid above 36°C) is characterized by its exceptional polarity, high dielectric constant (ε_r ≈ 89), and broad electrochemical stability window, making it a critical component in lithium-ion battery electrolytes. Its IUPAC name, 1,3-dioxolan-2-one, reflects its cyclic carbonate structure, which enhances ionic conductivity when blended with solvents like dimethyl carbonate (DMC). Ethylene Carbonate is rigorously tested for trace metals (<1 ppm) and water content (<50 ppm) to meet research-grade and industrial standards. Available in 99.9% purity, it is packaged under inert gas to ensure stability and shipped with detailed technical documentation, including MSDS, COA, and NMR spectra.

Properties

• CAS Number: 96-49-1
• Complexity: 60.4
• IUPAC Name: 1,3-dioxolan-2-one
• InChI: InChI=1S/C3H4O3/c4-3-5-1-2-6-3/h1-2H2
• InChI Key: KMTRUDSVKNLOMY-UHFFFAOYSA-N
• Exact Mass: 88.016043985
• Molecular Formula: C3H4O3
• Molecular Weight: 88.06
• SMILES: C1COC(=O)O1
• Topological: 35.5
• Monoisotopic Mass: 88.016043985
• Physical Description: Other Solid; Liquid
• Color/Form: Monoclinic plates
• Odor: Odorless
• Boiling Point: 248 °C
• Melting Point: 36.4 °C
• Flash Point: 143 °C
• Solubility: Soluble in water, alcohol, ether, and benzene
• Density: 1.3214 at 39 °C
• Vapor Density: 3.04
• Vapor Pressure: 0.0098 [mmHg]
• Heat of Combustion: -1.08X10+9 J/k mol
• Refractive Index: Index of refraction: 1.4148 @ 50 °C
• Synonyms: Ethylene carbonate, 1,3-DIOXOLAN-2-ONE, 2-Dioxolone, Texacar EC, CCRIS 293, HSDB 6803, UNII-RGJ96TB7R7, EINECS 202-510-0, DTXSID2026600, JEFFSOL EC, AI3-18365, 1,3-Dioxalane-2-one, NSC-11801, DTXCID806600, ETHYLENE CARBONATE [MI], EC 202-510-0, DIOXOLAN-2-ONE, 1,3-, 1,3-DIOXOLAN-2-ONE [HSDB], Dioxolone2, 1,3Dioxolan2one, 1,3Dioxacyclopentan2one, ETHYLENE CARBONATE [INCI], 202-510-0, inchi=1/c3h4o3/c4-3-5-1-2-6-3/h1-2h, kmtrudsvknlomy-uhfffaoysa-n, 96-49-1, Glycol carbonate, Ethylene glycol carbonate, Dioxolone-2, Cyclic ethylene carbonate, Ethylene carbonic acid, 1,3-Dioxacyclopentan-2-one, Carbonic acid, cyclic ethylene ester, Ethylene glycol, cyclic carbonate, NSC 11801, Ethylenester kyseliny uhlicite, Ethylenecarbonate, 99%, 2-Oxo-1,3-dioxolane, RGJ96TB7R7, WLN: T5OVOTJ, (1,3)dioxolan-2-one, [1,3]dioxolan-2-one, MFCD00005382, Ethylenester kyseliny uhlicite [Czech], ethylenecarbonate, ethylene carbonat, oxo-1,3-dioxolane, Ethylene carbonate, 98%, SCHEMBL13629, SCHEMBL501745, SCHEMBL2011229, SCHEMBL2784203, CHEMBL3181803, SCHEMBL16701200, CHEBI:178725, NSC11801, NSC16568, Ethylene carbonate, anhydrous, 99%, Tox21_201075, BBL011402, NSC-16568, STL146506, AKOS005721172, FE61734, CAS-96-49-1, NCGC00248916-01, NCGC00258628-01, 96-49-1(DMF), CS-0017611, E0076, NS00003405, EN300-75327, C20363, D72525, Ethylene carbonate Kishida Chemical LBG-29015, A845602, Q421145, F0001-2299, Z1172235744, Ethylene carbonate, >=99%, acid <10 ppm, H2O <10 ppm, Ethylene carbonate, Standard for quantitative NMR, TraceCERT(R)

Application

Ethylene Carbonate serves as a key solvent in lithium-ion battery electrolytes, where it facilitates lithium salt dissociation and stabilizes SEI layers on anodes. It is also employed as a polar aprotic solvent in organic synthesis, particularly in carboxylation and transesterification reactions. Industrial applications include use as a plasticizer for polymers and a precursor for polycarbonate resins.

Safety and Hazards

GHS Hazard Statements

• H302 (56.4%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (13.1%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (74.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H373 (56.2%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

Precautionary Statements

• P260, P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, and P501

Hazard Classes and Categories

• Acute Tox. 4 (56.4%)
• Skin Irrit. 2 (13.1%)
• Eye Irrit. 2 (74.2%)
• STOT RE 2 (56.2%)

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