The so-called liquid nitrogen is liquid nitrogen. It is a chemical substance with no corrosiveness, no color and no odor. Because of its extremely low temperature, it is also nonflammable, but it is toxic to some extent. Of course, because of its inactivity, it does not support combustion. Do you think it is not as powerful as you think? But you must know that it must release its power, so it is what it seems on the surface.
Usually, under normal pressure, its temperature is-196 degrees, and its boiling point is the same. In industry, liquid nitrogen is mainly extracted from air, because in air, the proportion of nitrogen reaches 78%, and human skin can be said to be no big problem at the moment of direct contact, but it is only for a moment, but for more than 2 seconds, then our.
Therefore, after the above introduction, we can easily see that once liquid nitrogen touches wet clothes, the wet clothes will become as hard as stones in an instant, but if dry soft things are soaked in liquid nitrogen, they will become very brittle, as brittle as glass. Therefore, in the process of our experiment, we must pay attention to safety and avoid frostbite. Of course, it also brings a lot of convenience in our life. We can use it for quick freezing of goods, making ice products, making nitrogen fertilizer, and of course, excluding red imported fire ants.