Vinyl Methyl Ether|107-25-5

Vinyl Methyl Ether|107-25-5

Chemical Name:Vinyl Methyl Ether | Methyl Vinyl Ether (MVE) | Methoxyethene

CAS Number: 107-25-5

Molecular Formula: CHOCH₃

Structure: CH₂=CH-O-CH₃

ASSAY:99%

PH:7.0-8.0

Properties and Primary Uses

1. Physical Properties:A colorless, highly flammable, and volatile gas at room temperature with a faint ethereal odor.

Boiling Point: 5.5 °C (requires storage as a liquefied gas under pressure).

Slightly soluble in water, miscible with most organic solvents (e.g., ethanol, diethyl ether).Forms explosive mixtures with air.

2. Key Chemical Property: Polymerization

MVE is a highly reactive vinyl monomer. The methoxy (-OCH₃) group is a strong electron donor, making the double bond highly electron-rich and exceptionally susceptible to cationic polymerization.

It readily undergoes copolymerization with various monomers (e.g., acrylates, maleic anhydride) to modify polymer properties.

3. Main Applications:

Polymer Synthesis: Its primary use. The homopolymer, poly(vinyl methyl ether), is a viscous liquid/rubbery solid used as a pressure-sensitive adhesive, plasticizer, and tackifier.

Copolymer Monomer: Widely used to produce copolymer resins for coatings, textile finishes, adhesives, and inks, enhancing flexibility, adhesion, or solubility.

Organic Synthesis Intermediate:Used in the synthesis of certain pharmaceuticals and fragrance intermediates.

Special Applications: Historically used as an inhalation anesthetic (now largely obsolete).

Safety and Handling (Critical)

Vinyl methyl ether is a high-hazard chemical requiring strict safety protocols.

Hazard Classification:

Extremely Flammable (easily forms explosive air mixtures).

Irritant to the respiratory system; narcotic at high concentrations.

Can form unstable and potentially explosive peroxides upon prolonged exposure to air or heat.

Storage & Handling:

Store in a cool, well-ventilated area, away from ignition sources.

Typically supplied in steel cylinders under an inert gas (e.g., nitrogen) blanket and stabilized with inhibitors (e.g., alkali) to prevent premature polymerization and peroxide formation.Handle using explosion-proof equipment under an inert atmosphere.

Personal Protective Equipment (PPE):

Chemical safety goggles, impermeable gloves, and engineering controls (fume hood) are essential.

Summary

Vinyl Methyl Ether (CAS 107-25-5) is a crucial, highly reactive monomer for cationic polymerization. Its primary industrial value lies in producing homopolymers and copolymers for adhesives, coatings, and related fields. It is simultaneously a highly flammable and hazardous material, demanding rigorous safety measures during storage, transport, and use.

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