Dimethyl carbonate CAS No.616-38-6

Dimethyl Carbonate (CAS No. 616-38-6) 

1. Basic Information

Chemical Name: Dimethyl CarbonateSynonyms: DMC; Methyl carbonate; Carbonic acid dimethyl esterCAS Number: 616-38-6Molecular Formula: C₃H₆O₃Molecular Weight: 90.08 g/molAppearance: Colorless liquidOdor: Mild, ester-like odor

2. Physical and Chemical Properties

Melting Point: 2–4 °C (36–39 °F)Boiling Point: 90 °C (194 °F)Density: 1.07 g/cm³ (at 20 °C)Solubility:Water: Slightly soluble (13 g/L at 20 °C)Organic solvents: Miscible with alcohols, ethers, benzeneRefractive Index: 1.368–1.369 (20 °C)Flash Point: 17 °C (63 °F) (closed cup) – Highly FlammableVapor Pressure: 62 mmHg at 20 °C

3. Chemical Structure

    O     ║  CH₃-O-C-O-CH₃

4. Hazards (GHS Classification)

Flammability: Highly flammable liquid (H225)Health Hazards:Eye/Irritation: Causes mild irritation (H319)Inhalation: May cause dizziness or respiratory tract irritation (H336)Environmental Hazards: Low toxicity to aquatic life (H402)NFPA Rating: Health 1, Flammability 3, Reactivity 0

5. Storage and Handling

Storage: Store in a cool, well-ventilated area away from heat/sparks/open flames. Use explosion-proof equipment.Handling: Use PPE (gloves, goggles, vapor respirator) and ground containers to prevent static discharge.

6. Applications

Green Solvent: Replacement for toxic solvents (e.g., MTBE, DCM) in coatings, adhesives.Chemical Synthesis: Methylating/ carbonylating agent in pharmaceuticals (e.g., pesticides, polycarbonates).Electrolytes: Used in lithium-ion batteries.

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