Arsenic trioxide has a wide range of applications, and we definitely need to know its properties before we use it so that we can apply it better. If you are interested in this topic, then let's take a look, and hope to bring help to some people.

　　Arsenic trioxide is available in amorphous, equiaxed, monoclinic or colorless powder states. They are both easily reduced and easily oxidized. The melting point of the product in use is 275°C for arsenic, and the boiling point of the white sulfite is 313°C and 457.2°C. Its solubility is slightly soluble in water (at 25 °, 1 g of the substance can be dissolved in greater than or equal to 100 ml and less than 1000 ml of water), soluble in acids and bases. Its density is relative density (water=1) 3.86. Its nature is odorless, white powder or crystalline. Nowadays, it is mainly used for the extraction of elemental arsenic. It is the raw material for smelting arsenic alloy and manufacturing semiconductors. When used arsenic trioxide its principle can be explained by the thin film theory, which holds that passivation is due to the action of metals and oxidizing substances. passivation film on the surface of the metal. What you need to know, of course, is that this film actually exists as a separate phase, usually a compound of an oxide metal. Arsenic trioxide serves to completely separate the metal from the corrosive medium, preventing the metal from coming into contact with the corrosive medium and causing the metal to essentially stop dissolving, forming a passivated state and preventing corrosion.

　　Since the passivation process of arsenic trioxide is carried out in a non-reactive state, it can be added repeatedly and therefore has a longer service life and is more economical in cost. When you use it, you will find that it has the characteristics of not increasing the thickness of the workpiece and discoloration after processing, improving the accuracy and added value of the product and making the operation more convenient compared to the traditional physical sealing method. With arsenic trioxide of course also promotes the formation of oxygen molecular structure passivation film on the metal surface, the film is dense and stable, while having a self-healing effect in the air, so it is similar to the traditional method of applying antirust oil. The passivation film formed is more stable and more corrosion resistant. It is also soluble in a mixture of 2 parts sulfuric acid and 1 part water, slightly soluble in hydrochloric acid and nitric acid, slowly soluble in hydrofluoric acid, and almost insoluble in water. Arsenic trioxide is stimulating, with a relative density of 5.85, a melting point of 2680°C and a boiling point of 4300°C. It is second only to diamond in hardness and is also the main raw material for artificial drilling.

　　After the introduction of the above content, we have also understood some of the properties of arsenic trioxide. Other knowledge will continue to be updated in the next issue, so remember to come and watch if you have time. There are customer service staff here 24 hours a day.