Cyclopentadien
Bezeichnung:Cyclopentadien
CAS-Nr542-92-7
Englisch Name:1,3-Cyclopentadiene
CBNumberCB9852039
SummenformelC5H6
Molgewicht66.1
MOL-Datei542-92-7.mol
Synonyma
Cyclopentadien
1,3-Cyclopentadien
Pentol
Cyclopentadien physikalisch-chemischer Eigenschaften
Schmelzpunkt | -85°; mp 32.5° |
Siedepunkt | bp760 41.5-42.0° |
Dichte | d40 0.8235; d410 0.8131; d420 0.8021; d425 0.7966; d430 0.7914 |
Dampfdruck | 381 at 20.6 °C, 735 at 40.6 °C, 1,380 at 60.9 °C (Stoeck and Roscher, 1977) |
Brechungsindex | nD16 1.44632 |
Löslichkeit | Miscible with acetone, benzene, carbon tetrachloride, and ether. Soluble in acetic acid, aniline, and carbon disulfide (Windholz et al., 1983). |
Aggregatzustand | Colorless liquid |
pka | 16(at 25℃) |
Wasserlöslichkeit | 10.3 mM at 25 °C (shake flask-UV spectrophotometry, Streitwieser and Nebenzahl, 1976) |
Henry's Law Constant | 5.1 at 25 °C (approximate - calculated from water solubility and vapor pressure) |
Expositionsgrenzwerte | TLV-TWA 75 ppm (~202 mg/m3) (ACGIH, NIOSH, and OSHA); IDLH 2000 ppm (NIOSH). |
Stabilität | 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. |
EPA chemische Informationen | Cyclopentadiene (542-92-7) |
RIDADR | 1993 |
OEB | A |
OEL | TWA: 75 ppm (200 mg/m3) |
HazardClass | 3.2 |
PackingGroup | III |
Giftige Stoffe Daten | 542-92-7(Hazardous Substances Data) |
Toxizität | LD50 of dimer orally in rats: 0.82 g/kg (Smyth) |
IDLA | 750 ppm |