Purpurin (data page)

:Molecular Formula = C₁₄H₁₄O₅:Formula Weight = 262.25796:Composition = C(64.12%) H(5.38%) O(30.50%):Molar Refractivity = 64.57 cm³:Molar Volume = 172.1 cm3:Parachor = 514.5 cm3:Index of Refraction = 1.673 :Surface Tension = 79.7 /cm3:Density = 1.523g/cm3:Polarizability = 25.59 cm3:Monoisotopic Mass = 262.084124 Da:Nominal Mass = 262 Da:Average Mass = 262.258 Da:Log P = 0.82