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EC number: 232-490-9
CAS number: 8052-42-4
A very complex combination of high molecular weight organic compounds containing a relatively high proportion of hydrocarbons having carbon numbers predominantly greater than C25 with high carbon-to-hydrogen ratios. It also contains small amounts of various metals such as nickel, iron, or vanadium. It is obtained as the non-volatile residue from distillation of crude oil or by separation as the raffinate from a residual oil in a deasphalting or decarbonization process.
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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