Due to the limitation of the traditional pickling process, the sulfur content of coking benzene is high, and its market competitiveness is difficult to match that of petroleumbenzene.
由于传统酸洗精制工艺的限制，焦化纯苯的含硫量高，其市场竞争力难以与石油苯相匹敌。
2
Yet most aspirin manufacturing begins with benzene, a hydrocarbon that is typically derived from petroleum products.
但大部分厂家开始使用苯——一种由石油提炼的碳化氢来生产阿司匹林。
3
The harmful compounds in petroleum absent from renewable diesel include benzene which becomes an airborne carcinogen when burned.