Product Overview

Product Features

• High Purity & Low Impurities: GC ≥99.5%, moisture ≤100 ppm, free acid ≤1 μmol/g, strictly controlled for battery-grade quality.
• Excellent Reactivity: Reacts readily with nucleophiles (amines, thiols, alcohols) via ring-opening reactions, enabling efficient functionalization.
• Thermal & Chemical Stability: Stable at room temperature; decomposes above 260°C; resistant to hydrolysis under anhydrous conditions.
• Battery Performance Enhancement: Forms a dense, stable SEI film on electrode surfaces, improving battery cycle life and safety.
• Strict Quality Control: Each batch tested via GC, Karl Fischer titration and acid-base titration; COA and MSDS available.

Physical & Chemical Properties

Physical Properties

1. Appearance: White to off-white crystalline powder
2. Odor: Faint characteristic sulfonyl odor
3. Melting Point: 82–85 °C
4. Boiling Point: 256.6–257 °C (760 mmHg)
5. Density: 1.508 g/cm3 (25 °C)
6. Refractive Index: 1.521 (20 °C)
7. Flash Point: 109 °C (closed cup)
8. Vapor Pressure: 0.008–0.018 Pa (20–25 °C)
9. Solubility: Soluble in methanol, ethanol, acetone and polar organic solvents; slightly soluble in water; insoluble in hexane and toluene
10. Molecular Formula: C?H?O?S
11. Molecular Weight: 120.13

Chemical Properties

1. Chemical Stability: Stable in sealed, dry environment; avoid moisture, strong bases and prolonged heating.
2. Ring-Opening Reactivity: Undergoes ring-opening with nucleophiles (amines, thiols, alkoxides) to form sulfonate derivatives.
3. Acid-Base Neutrality: Neutral compound; no reaction with weak acids/bases; hydrolyzes in strong aqueous base to form sulfonic acid salts.
4. Thermal Decomposition: Decomposes above 260°C, releasing toxic SO? and organic fumes.
5. Polymerization Inhibition: Inhibits radical polymerization; used as a stabilizer in monomer storage.
6. Incompatibility: Avoid contact with strong oxidants, strong bases and reducing agents.

Applications

1. Lithium-Ion Battery Electrolyte Additive: Forms a dense, uniform SEI film on anode surfaces, preventing electrolyte decomposition and electrode corrosion; improves cycle stability, high-temperature performance and safety; dosage: 0.5–2.0% (w/w).
2. Organic Synthesis Intermediate: Used in Diels-Alder reactions as a dienophile; key building block for synthesizing sulfonate-containing pharmaceuticals, agrochemicals and fine chemicals.
3. Polymer Chemistry: Cross-linking agent for epoxy resins, polyurethanes and polyamides; introduces sulfonic acid groups to enhance polymer adhesion, hydrophilicity and ion exchange capacity.
4. Bioconjugation & Protein Modification: Reacts selectively with cysteine and histidine residues in proteins/peptides; used for biolabeling, immobilization and drug delivery system development.
5. Ion Exchange Resin Synthesis: Introduces sulfonic acid functional groups into resin matrices for water treatment, chromatography and metal ion adsorption applications.
6. Electroplating & Surface Treatment: Brightening agent and corrosion inhibitor in nickel, copper and zinc electroplating solutions.

Storage & Transportation Instructions

Storage Conditions

• Temperature: 2–8 °C (refrigerated storage recommended)
• Environment: Cool, dry, well-ventilated warehouse; keep container tightly sealed with nitrogen blanket to prevent moisture absorption and oxidation.
• Segregation: Store separately from strong oxidants, strong bases, food and feed; away from heat sources and direct sunlight.
• Shelf Life: 12 months under specified storage conditions; reseal promptly after opening.

Transportation Requirements

• UN Number: UN 3077 (Environmentally Hazardous Substance, Solid, N.O.S.)
• Hazard Class: 9 (Miscellaneous Dangerous Goods)
• Packing Group: III
• Packaging: 1kg/PE bottle with aluminum foil seal, 5kg/PE drum, 25kg/steel drum with inner plastic bag; shock-resistant, moisture-proof packaging.
• Transport Rules: Avoid violent collision, extrusion and rain soaking; do not transport with oxidants, acids or food; use refrigerated transport in summer to prevent melting.

Operation Notes

• Wear chemical-resistant gloves, safety goggles and dust respirator; work in a well-ventilated fume hood.
• Avoid inhalation of dust and direct contact with skin and eyes; in case of contact, rinse immediately with plenty of water.
• No eating, drinking or smoking in the workplace; wash hands thoroughly after operation.

Regulatory Information

• EINECS Number: 606-834-7
• HS Code: 2934999090
• Quality Standards: Complies with GB/T 37883-2019 (Battery Grade Organic Electrolyte Additives) and enterprise standards.
• Export Compliance: Classified as non-dangerous goods for air/sea export with proper documentation; comply with IATA and IMDG regulations.
• Restrictions: For industrial and research use only; not for human consumption or medical use.

Full Product Parameter Table