Diethylphosphatoethyltriethoxysilane, identified by its CAS number 757-44-8, is a specialized organosilicon compound with a growing significance in various industrial applications. For procurement managers and research scientists tasked with sourcing advanced chemical materials, a thorough understanding of this compound's properties and its potential uses is invaluable. This article delves into the characteristics and applications of Diethylphosphatoethyltriethoxysilane, highlighting its role as a key chemical intermediate.

Chemical Identity and Properties

Diethylphosphatoethyltriethoxysilane (Molecular Formula: C12H29O6PSi) is characterized by the presence of a diethylphosphato group and a triethoxysilyl group, linked by an ethyl chain. This dual functionality is the key to its versatility. The triethoxysilyl moiety allows it to participate in silane coupling reactions, hydrolysis, and condensation, enabling it to bond with inorganic surfaces and form siloxane polymers. The diethylphosphato group can introduce specific chemical properties, such as increased adhesion or polarity, to the resulting materials.

Key physical properties typically include a clear liquid appearance and a specific gravity around 1.031 g/mL. It has a boiling point of approximately 141℃ and a flash point of 70℃, indicating it is a combustible liquid. Its moisture sensitivity is also an important factor to consider during handling and storage, requiring airtight containers and controlled environments.

Primary Industrial Applications

1. Silicone Intermediate: The most prominent application of Diethylphosphatoethyltriethoxysilane is as an intermediate in the manufacturing of specialized silicone compounds. Its reactive silane end can be incorporated into silicone polymers to impart specific functionalities or to serve as a crosslinking agent. This is critical for industries developing high-performance silicones for sealants, coatings, and elastomers.

2. Surface Modification and Coupling Agent: The compound is highly effective in modifying the surfaces of inorganic materials like glass, silica, and metal oxides. By forming covalent bonds, it can enhance the compatibility and adhesion between inorganic fillers and organic polymer matrices. This makes it invaluable in the production of advanced composites, paints, and coatings, improving their mechanical strength, durability, and resistance to environmental factors.

3. Specialty Chemical Synthesis: Beyond its direct use in silicones, Diethylphosphatoethyltriethoxysilane serves as a building block in the synthesis of other complex organophosphorus and organosilicon compounds. Researchers often utilize it for its reactive functional groups to create novel molecules with tailored properties for niche applications.

Sourcing and Commercial Considerations

For businesses looking to purchase Diethylphosphatoethyltriethoxysilane, identifying reputable suppliers is crucial. Chinese manufacturers are significant producers of this chemical, offering competitive pricing and a reliable supply chain. When inquiring about purchase options, procurement managers should seek detailed technical data sheets, certificates of analysis, and safety data sheets. Understanding the packaging options (e.g., 25kg drums) and minimum order quantities is also essential for efficient procurement.

In conclusion, Diethylphosphatoethyltriethoxysilane (CAS 757-44-8) is a valuable specialty chemical for industries focused on advanced materials. Its properties make it an excellent intermediate for silicone production and a powerful tool for surface modification. For those seeking to buy this compound, partnering with experienced chemical suppliers ensures access to quality products and technical expertise.