Question

petroleum derivation are maily chemical​

Answer 1

Chemically, petroleum consists principally of hydrogen and carbon, but also contains small percentages of oxygen, nitrogen, sulfur, and traces of metals, such as vanadium, cobalt, and nickel. The common organic compounds include alkanes (paraffins), naphthenes, aromatics, and heterocompounds.

Petroleum: Heavy feedstocks

Sulfur, % w/w %: Sulfur, % w/w

Carbon residue of residuum: Carbon residue

Distillation profile: Fractional composition