Cyclopentadiene (CAS # 542-92-7)

Chemical Property:

Molecular Formula	C5H6
Molar Mass	66.1 ib
Qhov ntom	d40 0.8235; d410 0.8131; d420 0.8021; d425 0.7966; d430 0.7914 ib
Melting Point	-85 °; mp 32.5°
Boling Point	bp760 41.5-42.0°
Dej Solubility	10.3 mM ntawm 25 ° C (co flask-UV spectrophotometric, Streitwieser thiab Nebenzahl, 1976)
Solubility	Miscible nrog acetone, benzene, carbon tetrachloride, thiab ether. Soluble hauv acetic acid, aniline, thiab carbon disulfide (Windholz li al., 1983).
Vapor Siab	381 ntawm 20.6 ° C, 735 ntawm 40.6 ° C, 1,380 ntawm 60.9 ° C (Stoeck thiab Roscher, 1977)
Qhov tshwm sim	Cov kua dej tsis muaj xim
Exposure Limit	TLV-TWA 75 ppm (～202 mg/m3) (ACGIH, NIOSH, and OSHA); IDLH 2000 ppm (NIOSH).
pKa	16 (ntawm 25 ℃)
Kev ruaj ntseg	Nyob ruaj khov ntawm chav tsev kub. Incompatible nrog oxidizing tus neeg sawv cev, acids thiab ntau yam ntawm lwm cov tebchaw. Tej zaum yuav tsim peroxides hauv cia. Tej zaum yuav tshwm sim raws li polymerization.Decomposes ntawm cua sov
Refractive Index	nD16 1.44632
Physical thiab Chemical Properties	Cov khoom no yog cov kua tsis muaj xim, MP-97.2 ℃, BP 40 ℃, n20D 1.4446, txheeb ze ntom ntom 0.805 (19/4 ℃), miscible nrog cawv, ether, benzene thiab carbon tetrachloride, soluble hauv carbon disulfide, aniline, acetic acid thiab kua paraffin, insoluble hauv dej. Lub polymerization tau ua nyob rau hauv chav tsev kub los tsim dicyclopentadiene. cyclopentadiene dimer, MP -1 ℃, BP 170 ℃, n20D 1.1510, txheeb ze ntom ntom 0.986. Cyclopentadiene feem ntau yog tam sim no raws li ib tug dimer.

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Product Detail

Khoom cim npe

UN IDs	Xyoo 1993
Hazard Class	3.2
Packing Group	III
Toxicity	LD50 ntawm dimer qhov ncauj hauv nas: 0.82 g / kg (Smyth)

Taw qhia

Cyclopentadiene (C5H8) yog xim tsis muaj xim, pungent tsw kua. Nws yog ib qho tsis ruaj tsis khov olefin uas yog polymerized heev thiab kuj flammable.

Cyclopentadiene muaj ntau yam kev siv hauv kev tshawb fawb tshuaj. Nws tseem tuaj yeem siv los ua cov khoom siv raw rau polymers thiab roj hmab los txhim kho lawv lub cev thiab tshuaj lom neeg.

Muaj ob txoj hauv kev tseem ceeb rau kev npaj cyclopentadiene: ib qho yog tsim los ntawm kev tawg ntawm cov roj paraffin, thiab lwm yam yog npaj los ntawm isomerization cov tshuaj tiv thaiv lossis hydrogenation cov tshuaj tiv thaiv ntawm olefins.

Cyclopentadiene yog volatile heev thiab flammable, thiab yog ib tug flammable kua. Nyob rau hauv cov txheej txheem ntawm kev khaws cia thiab kev thauj mus los, kev tiv thaiv hluav taws thiab tawg yuav tsum tau ua kom tsis txhob muaj kev sib cuag nrog cov nplaim taws qhib thiab qhov kub thiab txias. Hnav cov khoom tiv thaiv tsim nyog xws li hnab looj tes, tsom iav, thiab cov khaub ncaws tawg thaum siv thiab tuav cyclopentadiene. Nyob rau tib lub sijhawm, yuav tsum tau saib xyuas kom tsis txhob muaj kev sib cuag nrog daim tawv nqaij thiab nqus tau nws cov vapors, thiaj li tsis ua rau khaus thiab lom. Nyob rau hauv qhov kev tshwm sim ntawm ib qho kev huam yuaj, txiav tawm lub hauv paus ntawm cov xau sai thiab ntxuav nws nrog cov khoom tsim nyog absorbent. Hauv kev tsim khoom lag luam, cov txheej txheem kev nyab xeeb ntawm kev ua haujlwm thiab kev ntsuas yuav tsum tau ua raws li kev ua haujlwm kom muaj kev nyab xeeb.

Yav dhau los: Cyclohexanone (CAS # 108-94-1)

Tom ntej: Cyclopentanone (CAS # 120-92-3)

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