IUPAC Name:  6a,7,7a,12,13,13a,14,14a-Octahydronaphtho[1,2-b]phenanthrene
Synonyms of Octahydro-1:2:5:6-dibenzanthracene (CAS NO:63021-67-0) : Dibenz(a,h)anthracene, octahydro- ; Octahydro-1:2:5:6-dibenzanthracene
InChI: InChI=1/C22H22/c1-3-7-19-15(5-1)9-11-17-14-22-18(13-21(17)19)12-10-16-6-2-4-8-20(16)22/h1-9,11,17-18,21-22H,10,12-14H2  
CAS NO:63021-67-0  
Molecular Formula:C₂₂H₂₂                     
Molecular Weight :286.4101                               
Molecular Structure :
Index of Refraction: 1.607 
Surface Tension: 43.4 dyne/cm 
Density: 1.087 g/cm³ 
Flash Point: 250.6 °C 
Enthalpy of Vaporization: 67.62 kJ/mol 
Boiling Point: 445.3 °C at 760 mmHg 
Vapour Pressure: 1.05E-07 mmHg at 25°C 

Information and data of Octahydro-1:2:5:6-dibenzanthracene (CAS NO:63021-67-0) which induced tumor .
Test Type:TDLo - Lowest published toxic dose
Route of exposure:Administration onto the skin
Species Test:Rodent - mouse
Dose / Time:1250 mg/kg/52W-I
Toxicity:Tumorigenic - equivocal tumorigenic agent by RTECS criteria Skin and Appendages - tumors Tumorigenic - tumors at site of application
Reference:PRLBA4 Proceedings of the Royal Society of London, Series B: Biological Sciences. (Royal Soc., 6 Carlton House Terrace, London SW1Y 5AG, UK) V.76- 1905- Volume(issue)/page/year: 111,485,1932

Questionable carcinogen with experimental tumorigenic data. When Octahydro-1:2:5:6-dibenzanthracene (CAS NO:63021-67-0) is heated to decomposition, it emits acrid smoke and irritating fumes.