Concentrated sulfuric acid is a highly corrosive chemical. To kill someone and dispose of the body without a trace, throwing it into a vat of sulfuric acid is the most effective method. Of course, that is hardly practical or realistic for the average person, primarily because concentrated sulfuric acid is not easy to purchase. The Nie Family had access to it because it is a raw chemical material required for washing sea sand.
The storage requirements for such a substance are extremely strict; iron, ceramics, and steel are all unsuitable. It must be stored in containers made of PTFE—polytetrafluoroethylene. Furthermore, it emits a pungent, suffocating odor. If you were to use it to dissolve a body in a residential building or similar location, the neighbors would report you immediately. However, since it can corrode even steel, dissolving a few pieces of clothing is nothing more than child's play.
This is why Liang Lisheng had A-Hui bury a barrel of concentrated sulfuric acid in the sand. They created a special passage held open by a plastic rod; once the clothes were dropped in, the rod was pulled out, allowing the sulfuric acid barrel to seal shut naturally, beginning the process of dissolving the clothes and shoes. Even for that brief moment, a sharp, stinging odor leaked out, which is why A-Hui had been spraying air freshener.
Chapter 595