Methylvinyldichlorosilane
Overview
Methylvinyldichlorosilane is an organosilicon compound with significant industrial applications. It is a reactive intermediate used primarily in the production of silicone polymers and resins. The compound features both vinyl and methyl groups attached to a silicon atom, which allows for versatile chemical modifications. Its reactivity with water and other nucleophiles makes it a valuable building block in organic and polymer chemistry. Due to its hazardous nature, it requires careful handling and storage to prevent accidents and ensure workplace safety.
Physical and Chemical Properties
Methylvinyldichlorosilane is a colorless to pale yellow liquid with a characteristic pungent odor. It has a molecular weight of 157.07 g/mol and a density of 1.08 g/cm³. The compound boils at 91-93 °C and reacts violently with water, releasing hydrogen chloride gas. It is soluble in common organic solvents such as benzene, toluene, and ether. The presence of both vinyl and dichlorosilane groups makes it highly reactive, particularly in hydrolysis and polymerization reactions. Proper handling under inert atmospheres is recommended to prevent unwanted reactions.
Main Applications
This compound is widely used in the synthesis of silicone-based materials, including resins, elastomers, and adhesives. Its vinyl group allows for cross-linking in polymer systems, enhancing material properties like flexibility and thermal stability. Additionally, Methylvinyldichlorosilane serves as a key intermediate in the production of specialty chemicals, such as silane coupling agents. These agents improve adhesion between organic and inorganic materials, making them valuable in coatings, composites, and electronics industries.
Safety and Storage
Methylvinyldichlorosilane is highly corrosive and poses significant health risks, including severe skin burns and eye damage. It must be stored in tightly sealed containers under dry, inert conditions to prevent moisture ingress and subsequent hydrolysis. Personal protective equipment (PPE), such as gloves, goggles, and respirators, is essential when handling this chemical. Spills should be neutralized with appropriate absorbents and disposed of in accordance with local regulations. Emergency showers and eye wash stations must be accessible in work areas.
B2B Procurement Guide
When procuring Methylvinyldichlorosilane, buyers should prioritize suppliers with proven track records in chemical manufacturing and distribution. Key considerations include verifying the compound's purity (typically 98% or higher), packaging integrity, and compliance with safety standards. Bulk purchases may require specialized storage solutions, such as nitrogen-purged containers or desiccants, to maintain product stability. Requesting material safety data sheets (MSDS) and certificates of analysis (CoA) is recommended to ensure quality and regulatory compliance.
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