Tungsten Trioxide Safety Issues

Tungsten Trioxide, also known as tungsten anhydride (WO 3), is a yellow powder, insoluble in water and alkali, and slightly soluble in acid. It is widely used in our daily life and industry, but it itself is harmful. Therefore, when using Tungsten Trioxide, attention should be paid to the safety issues related to Tungsten Trioxide. The safety issues of WO 3 include avoiding human contact during use, keeping away from flammable materials during storage and emergency treatment after use.

Firstly, Tungsten Trioxide is irritating to human eyes and skin. Therefore, when using WO 3, human contact should be avoided as much as possible. In case of inevitable contact, first aid measures should be taken in different degrees.

(1) In case of mild skin contact, a large amount of running water or normal saline can be used for flushing;

(2) When inhaling a small amount of Tungsten Trioxide, leave the scene quickly to the fresh air and keep the respiratory tract unobstructed;

(3) If the contact person is having difficulty breathing, please give oxygen in time; In case of respiratory arrest, the patient should be given artificial respiration immediately and sent to the hospital for medical treatment immediately.

(4) Eating a small amount of Tungsten Trioxide by mistake can drink enough warm water to induce vomiting; Please go to the hospital in time if you eat too much by mistake.

Second, the storage of Tungsten Trioxide should be very careful. Avoid direct sunlight and stay away from heat sources such as kindling; Packaging and sealing should be stored separately from bromine pentafluoride and chlorine trifluoride and should not be mixed. The storage area shall be equipped with appropriate materials to prevent leakage. Store it in a cool and ventilated place.

Finally, in case of accidental leakage of Tungsten Trioxide, the safety measures can be roughly divided into the following situations.

(1) Small amount of leakage: avoid dust, clean it carefully and collect it in a dry, clean and covered container;

(2) Large amount of leakage: it should be collected and recovered urgently or transferred to the garbage disposal sites for disposal.

According to reports, Tungsten Trioxide has no spontaneous combustion property. However, when it is put together with halogen compounds such as bromine pentafluoride and chlorine trifluoride, it will react violently and produce toxic smoke. After being inhaled by human body, it will cause general weakness, fever, measles-like rash, proteinuria and other adverse reactions; At the same time, it will also lead to serious fire, which will bring huge potential safety hazards to the surrounding areas, and may lead to excessive leakage and pollution of the areas. At this time, it is necessary to isolate the leakage and pollution area and limit access. Emergency personnel should wear dust masks and general work clothes to deal with leaked and polluted area. Therefore, it is very important to prepare well for the safety issues of Tungsten Trioxide, which can greatly reduce potential safety hazards.

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