Dicyclopentadiene Diepoxide (CAS 81-21-0): A Versatile Organic Intermediate

Dicyclopentadiene Diepoxide, identified by CAS number 81-21-0, is a crucial organic intermediate renowned for its exceptional chemical properties and wide range of industrial applications. With the molecular formula C10H12O2 and a molecular weight of 164.2, this compound plays a significant role in various manufacturing processes, particularly where robust and high-performance materials are required.

As a bis-epoxide derivative of dicyclopentadiene, Dicyclopentadiene Diepoxide is typically found as a white powder or off-white crystalline solid. Its key specifications include a high assay percentage, often exceeding 97% or 98%, and a melting point generally ranging from 184°C to 189°C. It exhibits an epoxy equivalent between 70 and 90 Gm/Eq, highlighting its reactivity in polymerization reactions. The compound is sparingly soluble in water, with approximately 1.4 grams dissolving per liter at 20°C, and has a density of 1.331 g/cm3. These inherent characteristics make it a valuable component in complex chemical syntheses.

The versatility of Dicyclopentadiene Diepoxide is evident in its diverse applications across multiple sectors. It serves as a fundamental intermediate in the production of high-performance materials, including advanced epoxy resins, specialized plasticizers, and durable protective coatings. In the realm of polymers, it acts as a critical additive for rubber and a key ingredient in high-temperature adhesives, offering enhanced strength and thermal stability. Furthermore, its unique chemical structure makes it suitable for use in refractory castables, reinforcing glass and steel composites, and within various laminates. The electronics industry also benefits from its properties, employing it in electronic device packaging, LED encapsulants, and photo-curable products. Additionally, it is utilized in the formulation of paints, contributing to the development of heat-resistant and wear-resistant automotive primers.

The preparation of Dicyclopentadiene Diepoxide involves the oxidation of dicyclopentadiene, typically achieved through the use of hydrogen peroxide or other suitable peroxides. This synthetic pathway ensures a controlled and efficient production of the diepoxide, maintaining the integrity and purity required for its specialized applications. Given its chemical nature, proper handling and storage are paramount. It should be stored in a clean, dry, and cool environment, away from direct sunlight and rain, to preserve its quality and stability. Users should be aware of its safety profile, which includes potential toxicity upon ingestion and irritation upon skin contact, necessitating the use of personal protective equipment such as gloves and eye protection.

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