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Cyclopentadiene 95% CAS NO. 542-92-7 High Purity Reactive Intermediate
This high-purity Cyclopentadiene, with a minimum purity of 95% (monomer basis), is a colorless liquid with a characteristic terpene-like or irritating odor . It is a highly reactive cycloalkene with the molecular formula C5H6, produced through advanced recovery and refining processes from coal tar or cracked petroleum fractions . Due to its conjugated diene structure, it is an exceptionally valuable intermediate in organic synthesis. The product is typically supplied and handled as the stable dimer (dicyclopentadiene) due to its tendency to polymerize at room temperature, but can be "cracked" to regenerate the highly reactive monomer for use. Its unique reactivity, verified by gas chromatography (GC) analysis, ensures reliable performance in demanding chemical and industrial processes.
Scope of Application
· This product is widely used as a key intermediate in organic synthesis, particularly as the diene component in Diels-Alder reactions to produce complex cyclic compounds, including synthetic alkaloids, camphors, and sesquiterpenes .
· It is a fundamental precursor for the production of the cyclopentadienyl ligand (Cp), which is used to synthesize metallocenes and other organometallic compounds, such as ferrocene .
· It can be used in the manufacture of specialty resins, including unsaturated polyester resins, and in the production of synthetic pest control agents like the insecticide chlordane .
· It serves as a starting material for the synthesis of cyclopentene and its derivatives, as well as other high-value chemical intermediates .
Product Features
Cyclopentadiene is characterized by its exceptionally high chemical reactivity, attributed to its conjugated diene system and active methylene group . It is supplied and transported as the stable dimer (dicyclopentadiene, CAS 77-73-6) to prevent spontaneous polymerization . The monomer can be generated as needed via a retro-Diels-Alder reaction by heating the dimer . The product has a low boiling point of approximately 41-42°C (106-108°F) and a flash point of 25°C (77°F) for the monomer . It is insoluble in water but soluble in common organic solvents. The Company employs advanced analytical instruments to test both the dimer and the regenerated monomer, ensuring they meet rigorous industrial standards for synthesis and manufacturing.
Packaging and Transportation
· The products are packaged as the stable dimer in new, securely sealed steel drums, IBC containers, or ISO tankers .
· Customized packaging sizes, including smaller containers for laboratory use, are available according to customer requirements.
Safety and Storage
· The monomer is highly flammable and can form explosive mixtures with air. It should be handled with strict precautions to avoid ignition sources, and all equipment must be grounded .
· It is chemically unstable and readily polymerizes to its dimer at room temperature in an exothermic reaction. The monomer must be stored cold (below -20°C) and preferably under an inert atmosphere to prevent dangerous polymerization and peroxide formation .
· The product (monomer) is irritating to the eyes, skin, and respiratory tract, and prolonged exposure can cause central nervous system effects .
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