1, 3-Cyclopentadiene 542-92-7 large scale in supply CAS NO.542-92-7

product name: 1，3-cyclopentadiene
synonyms: cyclopentadiene;pentole;pyropentylene;r-pentine;1，3-cyclopentadiene;2,4-cyclopentadiene
cas: 542-92-7
mf: c5h6
mw: 66.10114
einecs: 208-835-4
product categories:
mol file: 542-92-7.mol
1，3-cyclopentadiene structure
1，3-cyclopentadiene chemical properties
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.
safety information
ridadr 1993
hazardclass 3.2
packinggroup iii
msds information
1，3-cyclopentadiene usage and synthesis
chemical properties colourless liquid
general description 1，3-cyclopentadiene is a colorless liquid with an irritating, terpene-like odor. bp: 42.5°c; flash point: 77°f. density: 0.805 g cm-3.
reactivity profile 1，3-cyclopentadiene is incompatible with strong oxidizing agents. 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. mixtures with air are explosive. presents a moderate explosion hazard when exposed to heat or flame. decomposes violently at high temperature and pressure. may form explosive peroxides in storage. undergoes a spontaneous dimerization at room temperature to give di1，3-cyclopentadiene (c10h12, cas no: 77-73-6), which is a low-melting solid (melting point: 32.5°c). the reaction is strongly exothermic (hazardous chemicals desk reference, p. 360 (1987)), but occurs sufficiently slowly that 1，3-cyclopentadiene can be said to be stable at room temperature. the dimerization accounts for the partial or complete solidification of liquid 1，3-cyclopentadiene in storage. polymerization occurs more rapidly and extensively at higher temperatures. when heated to 180-200°c, 1，3-cyclopentadiene gives poly1，3-cyclopentadiene, a white waxy solid. stronger heating breaks down poly1，3-cyclopentadiene and re-generates the monomeric 1，3-cyclopentadiene as a vapor. the vapor decomposes violently at higher temperatures and pressures.
1，3-cyclopentadiene preparation products and raw materials
raw materials coal tar-->motor benzol-->cyclopentene-->dicyclopentadiene-->light benzol-->cyclopentane-->packed tower-->trans-1,3-pentadiene-->1,4-pentadiene
preparation products ferrocene-->cyclopentene-->dicyclopentadiene-->((1r,4s)-2-azabicyclo[2.2.1]hept-5-en-3-one-->methidathion-->5-phenylcarbamoylamino-1,2,3-thiadiazole-->hexachlorocyclopentadiene-->basic yellow 24-->1-methyl-3-(a-cyclopentylmandeloyloxy)pyrrolidinehydrochloride-->heptenophos-->olaquindox-->thiosulfan-->2-azabicyclo[2.2.1]hept-5-en-3-one-->cyclopentane-->malotilate-->bis(cyclopentadienyl)zirconium chloride hydride-->2-chloro-5-chloromethylpyridine-->methyl a yclopentylmandelate-->5-ethylidene-2-norbornene-->bipariden-->1-methylcyclopenta-1,3-diene-->1,5-pentanediol-->catonic dark yellow 2rl-->chlordane-->1，2，3，4-tetrachlorocyclopentane-->carbic anhydride-->titanium(zirconium)dialkyl endo-silicon cyclopentadiethyl tert-butylamine-->metallocene catalyst