gases, petroleum, C3-5 rich;Gases (petroleum), catalytic-cracked naphtha debutanizer bottoms, C3-5-rich;Gases (petroleum), catalytic-cracked naphtha debutanizer bottoms, C3-5-rich Petroleum gas [A complex combination of hydrocarbons obtained from the stabilization of catalytic cracked naphtha. It consists of aliphatic hydrocarbons having carbon numbers