Description

Glycol Sulfite (CAS No. 3741-38-6) is a high-purity cyclic sulfite ester with the molecular formula C₂H₄O₃S. Also known as 1,3,2-Dioxathiolane 2-oxide or Ethylene Sulfite, this specialized chemical is widely utilized in advanced electrochemical applications, particularly as an electrolyte additive in lithium-ion batteries. Its unique structure enhances battery performance by stabilizing the solid-electrolyte interphase (SEI) layer, improving cycle life, and increasing thermal stability. Our Glycol Sulfite is synthesized under stringent quality control to ensure ≥98% purity, making it ideal for research and industrial use. Available in various quantities, it is packaged under inert conditions to maintain stability and shelf life.

Properties

• CAS Number: 3741-38-6
• Complexity: 63.2
• IUPAC Name: 1,3,2-dioxathiolane 2-oxide
• InChI: InChI=1S/C2H4O3S/c3-6-4-1-2-5-6/h1-2H2
• InChI Key: WDXYVJKNSMILOQ-UHFFFAOYSA-N
• Exact Mass: 107.98811516
• Molecular Formula: C2H4O3S
• Molecular Weight: 108.12
• SMILES: C1COS(=O)O1
• Topological: 54.7
• Monoisotopic Mass: 107.98811516
• Physical Description: Colorless liquid;
• Synonyms: Ethylene sulfite, Glycol sulfite, 3741-38-6, 1,3,2-Dioxathiolane 2-oxide, 1,3,2-Dioxathiolane, 2-oxide, Glycolsulfite, Cyclic ethylene sulfite, 1,2-Ethylene sulfite, Ethylene glycol, cyclic sulfite, Ethylene glycol cyclic sulfite, Ethylene sulphite, NSC 3225, Sulfurous acid, cyclic ester with ethylene glycol, EINECS 223-131-7, 85XYC59UJB, DTXSID4020668, GLYCOL SULPHITE, AI3-18461, NSC-3225, DTXCID20668, 1,2Ethylene sulfite, 1,3,2Dioxathiolane, 2oxide, Ethylene glycol, cyclic sulfite (8CI), inchi=1/c2h4o3s/c3-6-4-1-2-5-6/h1-2h, NSC3225, MFCD00005354, 1,3,2-Dioxathiolan-2-oxide, UNII-85XYC59UJB, ethylenesulfite, C2H4O3S, Ethylene sulfite, 98%, WLN: T5OSOTJ BO, ,3,2-Dioxathiolan-2-oxide, 1,2-Dioxathiolane, 2-oxide, SCHEMBL127454, Ethylene sulfite, >=99.0%, CHEMBL3561007, 1,3, 2-Dioxathiolane, 2-oxide, Tox21_200499, AC7916, AKOS015895853, CS-W013675, NCGC00248661-01, NCGC00258053-01, SY036937, CAS-3741-38-6, Ethylene sulfite, purum, >=98.0% (GC), D2977, NS00022116, A823638, Q27269680

Application

Glycol Sulfite is primarily used as a key electrolyte additive in lithium-ion batteries, where it improves SEI formation and enhances electrochemical stability. It is also employed in organic synthesis as a sulfonating agent for fine chemicals. Researchers utilize it in polymer chemistry to modify material properties and in energy storage studies for advanced battery formulations.

Safety and Hazards

GHS Hazard Statements

• H301 (50%): Toxic if swallowed [Danger Acute toxicity, oral]
• H302 (33.3%): Harmful if swallowed [Warning Acute toxicity, oral]
• H312 (33.3%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H319 (50%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H332 (33.3%): Harmful if inhaled [Warning Acute toxicity, inhalation]
• H341 (33.3%): Suspected of causing genetic defects [Warning Germ cell mutagenicity]

Precautionary Statements

• P203, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P318, P321, P330, P337+P317, P362+P364, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (50%)
• Acute Tox. 4 (33.3%)
• Acute Tox. 4 (33.3%)
• Eye Irrit. 2 (50%)
• Acute Tox. 4 (33.3%)
• Muta. 2 (33.3%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.