What is Dimethyl Carbonate (DMC)?
CAS 616-38-6 Dimethyl Carbonate (DMC) is a versatile, non-toxic, and biodegradable solvent with the chemical formula C3H6O3. It is recognized as a green chemical alternative to traditional solvents, thanks to its low toxicity, high solubility, and environmentally friendly profile.
What are the properties of dimethyl carbonate dMC?
1. Physical & Basic Chemical Properties
- Appearance: Colorless, clear liquid.
- Odor: Mild, pleasant, ether-like odor.
- Molecular Formula: C₃H₆O₃
- CAS Number: 616-38-6
- Molecular Weight: 90.08 g/mol
- Boiling Point: 90°C (194°F) at 1 atm.
- Melting Point: 2-4°C (approx. 36°F).
- Density: 1.069 g/cm³ at 20°C.
- Refractive Index: 1.3687 at 20°C.
2. Chemical & Reactivity Properties
- Functional Group: It is a simple, symmetric carbonate ester (CH₃O–C(=O)–OCH₃).
- Solubility: Partially miscible with water (~13 g/L at 20°C). Fully miscible with most organic solvents (alcohols, ethers, ketones, aromatic hydrocarbons).
- Stability: Stable under normal conditions but can be hydrolyzed slowly by water, faster with acids or bases.
Dimethyl Carbonate solvent Applications
Dimethyl Carbonate is widely used in numerous industries due to its high purity and excellent green solvent properties:
1. Coatings & Paints
Used as an eco-friendly solvent in industrial paints and automotive coatings
Fast drying and VOC-exempt under U.S. EPA standards
2. Adhesives & Sealants
Ideal for polyurethane and epoxy adhesives
Improves spreadability and bond strength
3. Pharmaceutical Intermediates
Acts as a methylating/carbonylating agent
Used in synthesis of analgesics, antibiotics, and APIs
4. Battery Electrolyte Additive
Applied in lithium-ion battery electrolyte formulations
5. Green Chemistry & Synthesis
Preferred over traditional reagents like phosgene and dimethyl sulfate
Biodegradable and less toxic
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