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EC number: 265-057-8
CAS number: 64741-56-6
A complex residuum from the vacuum distillation of the residuum from atmospheric distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly greater than C34 and boiling above approximately 495°C (923°F).
RS-Freetext:Molecular No. C Estimated Weight Atoms Half-Life (days)Representative ComponentParaffinic 353 25 0.3 703 50 0.2Naphthenic (1-ring) 351 25 0.3 701 50 0.2Naphthenic (3-ring) 345 25 0.4 695 50 0.1Aromatic (1-ring) 345 25 0.4 695 50 0.2Aromatic (5-ring) 391 25 0.1 643 50 0.1Other PolyaromaticsNaphthalene 128 10 0.6Acenaphthene 154 12 0.2Fluorene 166 13 1.2Phenanthrene 178 14 0.8Anthracene 178 14 0.3Fluoranthene 202 16 0.2Pyrene 202 16 0.2Chrysene 228 18 0.2Benzo(a)pyrene 252 20 0.2Dibenz(a,h)anthracene 278 22 0.2Benzo(g,h,i)perylene 276 22 0.2Coronene 300
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