Binary phase diagrams between phenanthrene and two of its impurities: 9,10-dihydroanthracene and carbazole

The present study deals with the experimental determination of binary phase diagrams between Phenanthrene and two of its impurities in most commercial samples: 9,10-dihydroanthracene and carbazole. Phase equilibria were investigated by combining Differential Scanning Calorimetry and X-Ray Powder Diffraction analyses. The results highlighted the existence of two close eutectoid and eutectic reactions (∼64−65 ∘ C) in the phenanthrene/9,10-dihydroanthracene system; whereas eutectoid (∼55−60 ∘ C) and peritectic (∼120 ∘ C) reactions could be evidenced for the phenanthrene/carbazole system.