Molecular Formula: C₂₄H₁₄
Molar mass: 302.37 g/mol
EINECS: 205-877-5
Density: 1.313 g/cm³
Flash Point: 282 °C
Index of Refraction: 1.912
Boiling Point: 552.3 °C at 760 mmHg
Vapour Pressure: 1.12E-11 mmHg at 25°C
Storage temp: 2-8°C
Water solubility: Insoluble
Appearance: Colorless solid
Structure of Benzo[rst]pentaphene (189-55-9):

XLogP3-AA: 7.3
H-Bond Donor: 0
H-Bond Acceptor: 0
SMILES: c36ccc2cc1ccccc1c4c2c3c(cc4)c5ccccc5c6 
InChI: InChI=1/C24H14/c1-3-7-19-15(5-1)13-17-9-10-18-14-16-6-2-4-8-20(16)22-12-11-21(19)23(17)24(18)22/h1-14H 
InChIKey: TUGYIJVAYAHHHM-UHFFFAOYAB 
Std. InChI: InChI=1S/C24H14/c1-3-7-19-15(5-1)13-17-9-10-18-14-16-6-2-4-8-20(16)22-12-11-21(19)23(17)24(18)22/h1-14H 
Std. InChIKey: TUGYIJVAYAHHHM-UHFFFAOYSA-N 

NTP 10th Report on Carcinogens. IARC Cancer Review: Group 2B IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1987),p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 3 (1973),p. 215.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 32 (1983),p. 337.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . EPA Genetic Toxicology Program.

Confirmed carcinogen with experimental neoplastigenic and tumorigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
 

Hazard Codes: Xn
Risk Statements:
40:  Limited evidence of a carcinogenic effect
Safety Statements:
36:  Wear suitable protective clothing 
37:  Wear suitable gloves

 Benzo[rst]pentaphene (189-55-9) also can be called Dibenzo[a,i]pyrene ; 3,4,9, 10-Dibenzopyrene ; 1,2,7,8-Dibenzopyrene ;and Dibenz[a,i]pyrene .Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as Benzo[rst]pentaphene (189-55-9), and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.