Ina-imudaniloju bugbamu ti wa ni tito lẹšẹšẹ si meta classification: IIA, IIB, ati IIC.
Kilasi IIA
Dara fun awọn aaye pẹlu petirolu-bi oludoti, gẹgẹbi awọn ibudo epo. Gaasi aṣoju fun ẹka yii jẹ propane.
Kilasi IIB
Ti a lo ni awọn ile-iṣelọpọ gbogbogbo nibiti awọn gaasi eewu wa. Ethylene ni gaasi asoju fun yi classification.
Kilasi IIC
Apẹrẹ fun factories fara si hydrogen, acetylene, tabi erogba disulfide.