Dangerous chemicals refer to highly toxic chemicals and other chemicals that are toxic, corrosive, explosive, combustible and combustion-supporting, and harmful to human body, facilities and environment.

Sulfuric acid is a corrosive product. Sulfuric acid is an inorganic compound with the chemical formula H2SO4, which is the most important oxyacid of sulfur. Anhydrous sulfuric acid is a colorless oily liquid which crystallizes at 65438 00.36℃. Usually, aqueous solutions with different concentrations are used and prepared by tower method and contact method. Contact with flammable materials, organic substances, etc. Will produce a violent reaction and even cause combustion.

Storage of sulfuric acid

It should be placed in a cool and ventilated place, protected from sun and rain, prohibited from touching fire sources, and not stored and transported with explosives, oxidants and organic substances. The transportation rules of dangerous goods should be strictly observed, and extra care should be taken during handling to prevent the packaging from being damaged. In case of fire, use water mist to put it out, or use a carbon dioxide fire extinguisher. Do not use high-pressure water column to prevent sulfuric acid from splashing.

Repair and reconstruction of skin damaged by sulfuric acid for several years.

For the injury caused by sulfuric acid, besides cleaning and healing the wound, it often needs long-term repair and reconstruction. At the initial stage of treatment, the main purpose is to repair burns and chemical corrosion injuries. In the initial healing process, because carrion is difficult to be removed for a short time, and there are many residual acids, it is often accompanied by a large amount of tissue exudate, which may cause electrolyte disorder in the whole body and local infection will be more serious. It often takes a month or two to control the infection of the wound and let the local acid be removed and metabolized before the later repair and reconstruction.

In plastic surgery, it is often necessary to combine other departments to maintain patients' five senses, such as placing nasal snorkel or tracheotomy in combination with otorhinolaryngology to keep patients breathing smoothly, and may also need to place enteral nutrition tube to keep patients' nutrition.

After the granulation of the wound is perfect and the local infection is controlled, it is necessary to repair the facial soft tissue with body flap, such as abdominal flap. This repair process often takes many years, and it is difficult to present a complete facial morphology, because skin, soft tissue and bones may be destroyed a lot.

Even at present, the best repair state is still very terrible, such as the numerous scar changes or facial defects and depressions, and ordinary people will still have fear after reading it. If the eye is seriously injured, you need to cooperate with the ophthalmology department to remove the eyeball, and then see if you need to install artificial eyes.