Diethyl carbonate

Description

1. Product Overview
Diethyl Carbonate (DEC) is a high-purity, organic carbonate solvent recognized for its low toxicity, high dielectric constant, and excellent electrolyte solubility. It serves as a critical performance component in lithium-ion battery electrolytes for electric vehicles (EVs) and energy storage systems (ESS), as well as a specialized intermediate in pharmaceutical and agrochemical synthesis. Its strategic value lies in enabling high-energy-density batteries and sustainable synthesis routes, directly supporting the global transition to electrification and green chemistry.

2. Key Specifications & Technical Characteristics

• Chemical Composition: (C₂H₅O)₂CO; CAS No. 105-58-8

• Purity Grade: Battery-grade (≥99.95%) / Industrial-grade (≥99.5%)

• Physical Characteristics:

  • Appearance: Transparent, colorless liquid

  • Odor: Mild, ether-like

  • Density (20°C): 0.975 g/cm³

  • Boiling point: 126–128°C

  • Flash point: 25°C (closed cup)

  • Water content: ≤20 ppm (battery-grade)

• Packaging Options:

  • 200 L steel drums (net 180 kg)

  • 1,000 L IBC totes (net 900 kg)

  • ISO tank containers (bulk liquid)

• Shelf Life: 24 months from date of manufacture when stored in original sealed containers under dry, cool, and ventilated conditions (<30°C)

3. Core Industrial Applications

• Lithium-Ion Battery Manufacturing (Primary): Used as a co-solvent in electrolytes (5–30% by volume) for NMC, LFP, and LCO cathodes. DEC’s low viscosity improves ionic conductivity at low temperatures (-20°C), outperforming ethylene carbonate (EC) alone, and its high anodic stability extends cycle life beyond 2,000 cycles.

• Pharmaceutical Synthesis: Acts as a non-toxic carbonylating agent and ethylating reagent in the production of anti-epileptics and antibiotics. Safer than phosgene or dimethyl sulfate, reducing hazardous waste disposal costs by up to 40%.

• Agrochemicals: Intermediate for carbamate-based insecticides and herbicides, offering superior yield (>92%) compared to alternative solvents due to controlled reactivity.

• Paint & Coating Solvents: High-purity DEC replaces conventional aromatics in polyurethane and polyester coatings, enabling lower VOC emissions while maintaining leveling and gloss retention.

4. Competitive Advantages

• Quality Consistency: ISO 9001:2025 certified production with SPC-controlled batch processes; each lot includes GC-MS and Karl Fischer analysis (moisture <20 ppm guaranteed).

• Supply Reliability: Dual-source manufacturing plants (Asia and Europe) with 5,000 MT/month nameplate capacity; buffer stock maintained for emergency 48-hour dispatch.

• Logistics Capability: Dedicated hazmat-certified logistics partners; UN1993 (Class 3) compliance with real-time tracking for ISO tanks.

• Price Competitiveness: Direct-from-refinery pricing eliminates broker markups; volume discounts available for 12-month contracts.

• Sustainability: Bio-based DEC option available (from renewable ethanol); 100% recyclable packaging program; zero liquid discharge process in production.

• Technical Support: Full Material Safety Data Sheet (MSDS), Certificate of Analysis (CoA), and application lab support for electrolyte formulation optimization.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 MT (one full container load)

• Loading Capacity:

  • 20-foot ISO tank container: 20 MT (net weight)

  • IBC totes (1,000 L) per 20-foot container: 18 MT (20 IBCs × 900 kg)