Overview
Phenethyltrichlorosilane is an organosilicon compound featuring a reactive trichlorosilyl group bonded to a phenethyl moiety. It serves as a versatile intermediate in silicone chemistry, enabling covalent surface modifications and polymer synthesis. Primarily used in industrial and research settings, it bridges organic and inorganic materials by forming stable siloxane (Si-O) bonds. Its reactivity with hydroxyl groups makes it valuable for glass, metal, or ceramic surface treatments.
Physical and Chemical Properties
As a liquid at room temperature, phenethyltrichlorosilane exhibits moderate volatility and reacts vigorously with water or alcohols, releasing hydrochloric acid (HCl). Its density (~1.21 g/cm³) and boiling point (250-252°C) reflect its molecular structure. The trichlorosilyl group is highly electrophilic, facilitating nucleophilic substitution reactions. The aromatic phenethyl side chain contributes to solubility in non-polar solvents and compatibility with organic matrices.
Main Applications
In surface treatment, it acts as an adhesion promoter for coatings on glass or metals, enhancing durability. It’s also employed to modify fillers (e.g., silica) in composite materials. Additionally, it serves as a monomer for synthesizing specialty silicones with phenyl functionalities, which improve thermal stability in resins. Pharmaceutical and agrochemical industries use it to introduce silane groups into active molecules.
Safety and Storage
Due to its moisture sensitivity, phenethyltrichlorosilane must be stored under inert gas (argon/nitrogen) in tightly sealed containers. Avoid exposure to humidity to prevent HCl formation. Handling requires chemical-resistant gloves (nitrile/neoprene), goggles, and fume hoods. Spills should be neutralized with sodium bicarbonate and absorbed in inert material. Always refer to SDS for emergency protocols.
B2B Procurement Guide
When sourcing, prioritize suppliers with certified analytical reports (e.g., GC purity ≥98%). Bulk orders (25kg drums) typically offer cost advantages but require dry storage facilities. Verify CAS no. (15692-20-5) to avoid counterfeit products. For international shipments, ensure compliance with hazardous material regulations (e.g., UN 1760 for corrosive liquids). Sample testing is recommended for new vendors.
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