- Cyclopentadiene density
- Cyclopentadiene melting point
- Cyclopentadienyl anion
- Cyclopentadiene hazards
- Cyclopentadiene density g/ml
- Cyclopentadiene pka
- Cyclopentadiene resonance
For medical information relating to Covid, please consult the World Health Organisation or local healthcare provision. Simple Structure Advanced History. Comment on this record. Featured data source. PD Mitscher leg0. Incompatible with oxidizing agents, acids and a wide varietyof other compounds. May form peroxides in storage. May undergospontaneous polymerisation. Decomposes on heating. Highly flammable. Mixtures with air are explosive. Effective ventilation. Remove sourcesof ignition from the working area. MLDRevision No. NIST Spectra nist ri USSR Engl. House, Moscow, Pyrolysis of methylcyclohexane, Ind. Pyrolysis of heptane, Ind. Gas Chromatogr. Zum gaschromatographischen retentionsverhalten von dicyclopentadienderivaten, J. Food Chem. Acta, A, NIST Spectra nist ri. Click to predict properties on the Chemicalize site. Search ChemSpider: Compounds with the same molecular formula Compounds with the same skeleton Use this molecule in a structure search.
Cyclopentadiene melting pointUse caution: Liquids with this reactive group classification have been known to react with the absorbent listed below. More info about absorbents, including situations to watch out for What is this information? Department of Transportation hazard labels, and a general description of the chemical. Cyclopentadiene is a colorless liquid with an irritating, terpene-like odor. Bp: Density: 0. The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. Highly Flammable Explosive. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas sewers, basements, tanks. Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a P may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. Substance may be transported hot. If molten aluminum is involved, refer to ERG Guide ERG, Ignites on contact with oxygen O2 and ozone O3.
Cyclopentadienyl anionRequest For Quotation. Order: 1KG Purity: Soluble in acetic acid, aniline, and carbon disulfide Windholz et al. Stability: Stable at room temperature. Incompatible with oxidizing agents, acids and a wide variety of other compounds. May form peroxides in storage. May undergo spontaneous polymerisation. Decomposes on heating. Highly flammable. Mixtures with air are explosive. MSDS Information. Chemical Properties 1,3-Cyclopentadiene is a colorless liquid that dimerizes easily in the presence of peroxides and trichloroacetic acid to a colorless solid. Physical properties Colorless liquid with a turpentine-like odor. Odor threshold concentration is 1. Uses Cyclopentadiene is used in the manufactureof resins, in the synthesis of sesquiterpenesand camphors, and as a ligand in the preparationof metal complexes. Uses manufacture of resins; in organic synthesis as the diene in the Diels-Alder reaction producing sesquiterpenes, synthetic alkaloids, camphors. Definition A cyclic hydrocarbon made by cracking petroleum. The molecules have a five-membered ring containing two carbon- carbon double bonds and one CH 2 group. It forms the negative cyclopentadienyl ionC 5 H 5 -present in sandwich compounds, such as ferrocene. Definition cyclopentadiene: A colourless liquidcyclic alkene,C 5 H 6 ; r. It is preparedas a by-product during the fractionaldistillation of crude benzenefrom coal tar. It undergoes condensationreactions with ketones to givehighly coloured compounds fulvenes and readily undergoes polymerizationat room temperature togive the dimer, dicyclopentadiene. Cyclopentadiene itself is not an aromaticcompound because it does nothave the required number of pi electrons. However, removal of a hydrogenatom produces the stablecyclopentadienyl ion,C 5 H 5-whichdoes have aromatic properties. Inparticular, the ring can coordinate topositive ions in such compounds asferrocene. Production Methods This compound occurs in the C6—C8 petroleum distillation fraction, and in coke oven light oil fractions. It is produced by dehydrogenation of cyclopentadiene or monomerization of its dimer. Bp: Density: 0. Ignites on contact with oxygen O2 and ozone O3. Explodes on contact with fuming nitric acid or a mixture of sulfuric acid and nitrogen tetroxide. Reacts vigorously on contact with potassium hydroxide and other strong bases. Presents a moderate explosion hazard when exposed to heat or flame. Decomposes violently at high temperature and pressure. May form explosive peroxides in storage. The reaction is strongly exothermic Hazardous Chemicals Desk Reference, p. Polymerization occurs more rapidly and extensively at higher temperatures. The vapor decomposes violently at higher temperatures and pressures.
Cyclopentadiene hazardsAt room temperature, it is a clear light yellow color liquid with an acrid odor. Dicyclopentadiene is coproduced in large quantities in the steam cracking of naphtha and gas oils to ethylene. The major use is in resinsparticularly, unsaturated polyester resins. It is also used in inks, adhesives, and paints. The top seven suppliers worldwide together had an annual capacity in of kilotonnes million pounds. The pure exo isomer was first prepared by base-mediated elimination of hydroiodo- exo- dicyclopentadiene. The reaction is reversible and at room temperature cyclopentadiene dimerizes over the course of hours to re-form dicyclopentadiene. Cyclopentadiene is a useful diene in Diels—Alder reactions as well as a precursor to metallocenes in organometallic chemistry. It is not available commercially as the monomer, due to the rapid formation of dicyclopentadiene; hence, it must be prepared by "cracking" the dicyclopentadiene i. The thermodynamic parameters of this process have been measured. Hydrogenation of dicyclopentadiene gives endo-tetrahydridodicyclopentadiene TH-dimera fuel in military applications. On reaction with aluminium chloride at elevated temperature, this C 10 hydrocarbon rearranges to adamantane. Dicyclopentadiene polymerizes. Copolymers are formed with ethylene or styrene. The " norbornene double bond" participates. This dialdehyde can be oxidized to the dicarboxylic acid and to a diol. All of these derivatives have some use in polymer science. Hydrogenation of dicyclopentadiene gives the saturated derivative C 10 H 16which undergoes acid-catalyzed rearrangement to adamantane. From Wikipedia, the free encyclopedia. CAS Number. Interactive image. Beilstein Reference. PubChem CID. Chemical formula. Solubility in water. Autoignition temperature. PEL Permissible. REL Recommended. IDLH Immediate danger. Journal of the American Chemical Society. Sam; Cheng, Zhengdong; Wang, Qingsheng
DicyclopentadieneCyclopentadiene is an organic compound with the formula C 5 H 6. At room temperature, this cyclic diene dimerizes over the course of hours to give dicyclopentadiene via a Diels—Alder reaction. This dimer can be restored by heating to give the monomer. The compound is mainly used for the production of cyclopentene and its derivatives. It is popularly used as a precursor to the cyclopentadienyl ligand Cp in cyclopentadienyl complexes in organometallic chemistry. Cyclopentadiene production is usually not distinguished from dicyclopentadiene since they are interconverted. The monomer is collected by distillation, and used soon thereafter. The hydrogen atoms in cyclopentadiene undergo rapid [1,5]- sigmatropic shifts as indicated by 1 H NMR spectra recorded at various temperatures. Cyclopentadiene is a highly reactive diene in the Diels—Alder reaction because minimal distortion of the diene is required to achieve the envelope geometry of the transition state compared to other dienes. Deprotonation can be achieved with a variety of bases, typically sodium hydridesodium metal, and butyl lithium. Salts of this anion are commercially available, including sodium cyclopentadienide and lithium cyclopentadienide. They are used to prepare cyclopentadienyl complexes. Metallocenes and related cyclopentadienyl derivatives have been heavily investigated and represent a cornerstone of organometallic chemistry owing to their high stability. The first metallocene characterised, ferrocenewas prepared the way many other metallocenes are prepared: by combining alkali metal derivatives of the form MC 5 H 5 with dihalides of the transition metals :  As typical example, nickelocene forms upon treating nickel II chloride with sodium cyclopentadienide in THF. Organometallic complexes that include both the cyclopentadienyl anion and cyclopentadiene itself are known, one example of which is the rhodocene derivative produced from the rhodocene monomer in protic solvents. It was the starting material in Leo Paquette 's synthesis of dodecahedrane. Aside from serving as a precursor to cyclopentadienyl-based catalysts, the main commercial application of cyclopentadiene is as a precursor to comonomers. Semi-hydrogenation gives cyclopentene. Diels-Alder reaction with butadiene gives ethylidene norbornenea comonomer in the production of EPDM rubbers. The commonly used abbreviation of the cyclopentadienyl anion is Cp. The abbreviation played a part in the naming of copernicium : the original proposal for the element's symbol was also Cp, but because of the abbreviation for this anion and the fact that lutetium was originally named cassiopeium and had Cp for the symbol as well, the symbol for copernicium was changed to Cn. From Wikipedia, the free encyclopedia. CAS Number. Interactive image. Beilstein Reference. Gmelin Reference. PubChem CID. Chemical formula. Solubility in water.
Cyclopentadiene density g/ml