The Molecular Structure of Methyl-azuleno(5,6,7-c,d)phenalene (CAS NO.28390-42-3):
Molecular Formula: C₂₁H₁₄
Molecular Weight: 266.335860 g/mol
Density: 1.254 g/cm³
ACD/LogP: 6.86
ACD/LogD (pH 5.5): 6.86
ACD/LogD (pH 7.4): 6.86
ACD/BCF (pH 5.5): 96585.28
ACD/BCF (pH 7.4): 96585.28
ACD/KOC (pH 5.5): 128759.24
ACD/KOC (pH 7.4): 128759.24
Index of Refraction: 1.853
Molar Refractivity: 95.13 cm³
Molar Volume: 212.3 cm³
Surface Tension: 60 dyne/cm 
Flash Point: 236.7 °C
Enthalpy of Vaporization: 71.53 kJ/mol
Boiling Point: 479.4 °C at 760 mmHg
Vapour Pressure: 6.9E-09 mmHg at 25°C

Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid smoke and irritating fumes.

 Methyl-azuleno(5,6,7-c,d)phenalene (CAS NO.28390-42-3) is also called as Methyl-azuleno(5,6,7-c,d)phenalene ; Azuleno(5,6,7-cd)phenalene, methyl- .