There are several major petrochemical intermediates that are presently manufactured with high-purity oxygen including ethylene and propylene oxide (antifreeze), vinyl chloride(for PVC), and caprolactam (for nylon).

• 目前，几种重要的石化半成品是用高纯度氧生产的，包括乙烯、环氧丙烷（防冻剂）、氯乙烯（用于PVC）和己内酰胺（用于尼龙）。