Vacuum Gas Oils (VGOs) from waxy crudes contain appreciable amount of wax. During catalytic cracking of VGO, due to lop sided cracking of n-paraffins, substantial amount of wax is retained in clarified oils. These clarified oils generally find their way in refinery fuel. The chemical nature of the clarified oils has been studied. Wax separated were characterised through nuclear magnetic resonance(n.m.r) and infrared(i.r) spectroscopy. The groupwise composition of the clarified oils have also been studied and the data has been compared with a typical short residue. Waxes separated from the clarified oils contain appreciably high proportion of n-paraffins indicating a potential feedstock for making alpha-olefins. Group type composition shows that the polar aromatics separated from the clarified oils have high BMCI values indicating the possibility of using it as feed stocks for carbon rich materials.