n heptane insoluble

例句：

1. 1. He used to work in a chemical factory, where he was exposed to n heptane.
   他以前在一家化工厂工作，那里他接触到了正己烷。
2. 2. The solvent is soluble in water but insoluble in n heptane.
   这种溶剂水溶但庚烷不溶。
3. 3. Due to its toxicity, n heptane is classified as a hazardous material.
   由于其毒性，庚烷被归类为危险物质。