Ethylene Sulfite CAS 3741-38-6 (ES, DTO 99.9%) is a cyclic sulfite ester, a clear colorless liquid. It is a high-performance lithium battery electrolyte additive, effectively improving cycle life, low-temperature performance and SEI film formation of lithium-ion batteries. TNJ Chemical is the leading manufacturer and exporter since 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To inquire more, please contact sales@tnjchem.com
Product Information
CAS No.: 3741-38-6
English Name: Ethylene SulfiteAbbreviation: ES / DTO
Synonym: 1,3,2-Dioxathiolan-2-oxide, Glycol sulfite
Molecular Formula: C₂H₄O₃S
Molecular Weight: 108.12
Appearance: Clear colorless liquid
Density (25℃): 1.426 g/mL
Boiling point: 159.1 ℃Flash point: 79 ℃
Refractive index (n20/D): 1.445–1.447
Melting point: -11 ℃
Solubility: Partially miscible with water; soluble in carbonate solvents
Stability: Sensitive to moisture, avoid water exposure
| Item | Standard |
|---|---|
| Assay | ≥99.9% |
| Water | ≤0.02% |
| Chloride | ≤10 ppm |
| Ethanol | ≤0.01% |
| Color (APHA) | ≤20 |
Use & Application
Lithium-ion battery electrolyte additive: Improve low-temperature performance, form stable SEI layer, suppress PC co-intercalation on graphite anodeOrganic synthesis intermediate for fine chemicals
Raw material for pharmaceutical intermediate synthesis
Packing: 20kg PE drum / 200kg drum
Storage: Keep sealed under nitrogen atmosphere, cool and dry warehouse, strictly keep away from moisture.
Recommended storage temperature: 2–8℃.
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