Ethylene sulfite (PubChem CID: 77342) — also known as glycol sulfite, 1,3,2-dioxathiolane-2-oxide, cyclic ethylene sulfite, and ethylene glycol cyclic sulfite — is a sulfurous acid cyclic ester of ethylene glycol with multiple synonyms including 1,2-ethylene sulfite, glycolsulfite, and ethylene sulphite.
| Boiling Point | 172°C |
| Color | Colorless |
| Formula Weight | 108.11 |
| Physical Form | Clear Liquid at 20°C |
| Chemical Name or Material | 1,3,2-Dioxathiolane 2-Oxide |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Hazards not otherwise classified (HNOC) or not covered by GHS
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Ethylene sulfite chemical is primarily used as an electrolyte additive in lithium-ion batteries to improve performance, stability, and cycle life.
The properties of ethylene sulfite include high polarity, thermal stability, and excellent solvency, making it effective in electrochemical applications and as a specialty solvent.
The benefits of ethylene sulfite in batteries include enhanced electrode protection, reduced gas formation, and extended battery lifespan through improved electrochemical performance.
Ethylene sulfite compound is synthesized by reacting ethylene glycol with thionyl chloride or sulfur-based reagents under controlled laboratory conditions.
Ethylene sulfite chemical should be handled with care, using protective equipment, as it may irritate skin and eyes and should be stored in well-ventilated areas.
