Understanding the precise chemical identity and properties of key raw materials is fundamental for any B2B purchaser or R&D scientist. Vinyltris(methylethylketoxime)silane, commonly known as VOS, is a significant organosilane used extensively in the silicone industry. As a leading supplier and manufacturer, we aim to provide detailed information on this versatile compound, including its CAS number, chemical properties, and its critical role in various applications.

Chemical Profile of Vinyltris(methylethylketoxime)silane

Vinyltris(methylethylketoxime)silane is an oximino silane with a distinct chemical structure that dictates its reactivity and utility. Its key identifiers and properties include:

• Chemical Name: Vinyltris(methylethylketoxime)silane
• Synonyms: VOS, Vinyltris(2-butanoneoxime)silane, Vinyltris(methylethylketoximino)silane
• CAS Number: 2224-33-1
• Molecular Formula: C₁₄H₂₇N₃O₃Si
• Molecular Weight: Approximately 313.47 g/mol
• Appearance: Typically a colorless to light yellow transparent liquid.
• Key Physical Properties: It exhibits a density around 0.98-0.99 g/mL, a boiling point of approximately 115°C at reduced pressure, and a refractive index around 1.46. It is sensitive to moisture, readily hydrolyzing.

Primary Application: Neutral Curing Agent for Silicone Sealants

The most significant application for VOS is its role as a neutral curing agent in silicone sealant formulations. When incorporated into these formulations, particularly in conjunction with methyloxime silanes, VOS offers distinct advantages:

• Accelerated Skin Formation: VOS significantly reduces the skin formation time of RTV silicone sealants. This means the surface of the sealant becomes tack-free more quickly, allowing for faster handling and processing.
• Improved Early Mechanical Properties: Beyond speed, VOS enhances the initial mechanical properties of the sealant, such as early stress resistance, elasticity, and tear resistance. This contributes to a more robust and durable seal shortly after application.
• Broad Compatibility: Its neutral cure mechanism makes it compatible with a wide range of silicone polymers and other additives used in sealant formulations.

Why Purchase VOS from a Reliable Supplier?

For businesses looking to buy high-quality VOS, partnering with a reputable supplier in China like our company is crucial. We ensure that our product meets stringent purity specifications (≥97.0% by GC), guaranteeing consistent performance and predictable results in your applications. We offer competitive pricing and a stable supply chain, supporting your manufacturing needs.

By understanding the chemical profile and application benefits of Vinyltris(methylethylketoxime)silane, you can make informed decisions to enhance your product formulations. We invite you to contact us to request a quote or to learn more about how our VOS can benefit your business.