What are the main uses of Ammonium bifluoride?

Ammonium fluoride (Ammonium bifluoride), also known as acid ammonium fluoride, is an important chemical substance that is widely used in various fields.

First, in the etching process, it is a key agent. Glass etching, ammonium fluoride can react with silica in glass to precisely carve the glass surface into a fine pattern or fine scale, such as in the processing of art glass products and optical lenses, often rely on this. Because glass can be etched gradually when encountered, craftsmen have to follow the design to make the glass surface look as expected and increase the beauty and practicality of glass products.

Second, in the field of metal surface treatment, it is also indispensable. It can remove oxides and impurities on the metal surface, make the metal surface clean, and lay a good foundation for subsequent electroplating, painting and other processes. Metals treated with ammonium fluorohydride have better adhesion to subsequent coatings, which can improve the corrosion resistance and aesthetics of metal products. It is widely used in automobile manufacturing, electronic equipment production and other industries.

Third, it also plays an important role in chemical synthesis. It can be a fluoride agent for fluorination reactions and participates in the synthesis of various organic and inorganic compounds. With the fluoride ions provided by it, specific chemical reactions can be carried out smoothly, and many compounds with special properties can be synthesized, which is of great significance in the research and development of new materials.

Fourth, it is also used in the field of wood preservative. It can penetrate into the interior of wood, inhibit the erosion of microorganisms and insects, prolong the service life of wood, and protect wood used in construction and furniture manufacturing.

Ammonium bifluoride needs to pay attention to when storing

Ammonium bifluoride (Ammonium bifluoride) is a chemical substance. When storing, many things must be observed.

Bear the brunt, because it is corrosive, it should be stored in corrosion-resistant containers. Such as porcelain cans, special plastic containers, etc., to prevent the container from being eroded and leaking, endangering the surroundings. And it is necessary to choose a dry place. If it is in a humid place, it is easy to deliquescent and deteriorate, losing its original chemical properties.

Furthermore, ammonium hydrogen fluoride is easy to decompose when heated, escaping harmful gases. Therefore, it should be avoided in a cool place, away from heat sources and fire. Do not place in direct sunlight, otherwise the temperature will rise, and it may be unexpected.

In addition, this substance is toxic, and the storage place must be locked to prevent unrelated people from accidentally touching and eating it. The label must be clear and indicate its danger, so that the contact person can see it at a glance.

It should not be co-stored with acids and alkalis. Because it can chemically react with acids and alkalis, or cause violent reactions, it can cause danger. It must be placed separately from such substances and keep a safe distance.

The storage place should be equipped with corresponding emergency treatment equipment, such as fire extinguishers, eye washers, etc. Once an accident such as leakage occurs, it can be responded to in time to reduce the damage. In this way, the safety of ammonium fluoride storage can be ensured to avoid disasters.

What are the physical properties of Ammonium bifluoride?

Ammonium bifluoride (Ammonium bifluoride) is a chemical substance with unique physical properties. It is colorless and crystalline at room temperature, like particles or powders, often with a slight sour taste. This substance is very soluble in water, and ammonium ions (NH) and hydrogen fluoride ions (HF) can be dissociated in water, and its aqueous solution is acidic.

Ammonium hydrogen fluoride has a melting point of about 125.6 ° C and a boiling point of about 230 ° C. Its density is about 1.50g/cm ³, which is heavier than water. This substance is deliquescent. When exposed to air, it is easy to absorb moisture and deliquescent, so it needs to be stored in a dry place.

Furthermore, ammonium hydrogen fluoride is corrosive and irritating to human skin, eyes and respiratory tract. When exposed to this substance, appropriate protective measures should be taken, such as wearing protective gloves, goggles and masks.

Its colorless appearance makes it more convenient in some application scenarios without introducing color interference. Its solubility and acidity play an important role in many chemical reactions and industrial processes, such as metal surface treatment, glass etching and other fields. Its acidity and corrosiveness are used to achieve specific process purposes. However, due to its corrosiveness and irritation, it must be used with caution and follow relevant safety procedures to ensure personnel safety and smooth operation.

Ammonium bifluoride is harmful to the human body

Ammonium (ammonium) and ammonium hydrogen fluoride (bifluoride) are very harmful to the human body. Ammonium hydrogen fluoride is highly corrosive and toxic, and when touched, a crisis will appear.

If the skin is connected to it, it is like a fire burning the body, causing severe pain, erythema and blisters will appear immediately. In severe cases, the skin and flesh will fester, damaging the muscles and bones, and although it heals, it will leave deep marks, and both the body and mind will be severely injured. If it enters the eyes, it will cause harm to the eyes, the tingling will be difficult, the vision will be blurred, or even blind, and the road to light will be cut off.

If you inhale its gas, you will still enter the place of miasma, the airway will be burned, the cough will not stop, and the breathing will be difficult. In this environment for a long time, the lungs and lobes are damaged, causing bronchitis, pneumonia and other diseases, and the breath is dying, and the health is no longer there. If taken by mistake, the viscera will be injured, gastrointestinal cramps, vomiting and diarrhea, poisoning the blood vessels, endangering life, and the viscera function will gradually lose.

Although ammonium is slightly less toxic, a large amount of ammonium salt dust is inhaled, which is also shrouded in haze, irritating the respiratory tract, causing cough and asthma. In the body, or disturbing the acid-base balance, causing metabolic disorders, and many diseases.

Therefore, when these two are kept away, when operating, they are well protected, such as wearing armor, to avoid their harm, protect their health, and avoid the disturbance of disease.

Ammonium bifluoride production methods

Ammonium bifluoride, also known as acid ammonium fluoride, is prepared by two common methods.

One is the neutralization of hydrofluoric acid and ammonia. Based on hydrofluoric acid, slowly introduce ammonia until the pH of the solution is enough to neutralize the two. The reaction formula is as follows: $HF + NH_ {3} · H_ {2} O\ longrightarrow NH_ {4} F + H_ {2} O $, $HF + NH_ {4} F\ longrightarrow NH_ {4} HF_ {2} $. During this process, the temperature and ventilation rate must be carefully controlled to prevent overreaction. Due to the strong corrosiveness of hydrofluoric acid, during operation, it is necessary to strictly follow safety regulations, wear protective equipment, and do it in a well-ventilated place.

The second is the method of reacting ammonium fluoride with hydrofluoric acid. Take an ammonium fluoride solution, add an appropriate amount of hydrofluoric acid, and combine the two to produce ammonium hydrogen fluoride. The chemical equation of the reaction is: $NH_ {4} F + HF\ longrightarrow NH_ {4} HF_ {2} $. This method also needs to pay attention to the regulation of reaction conditions to ensure that the proportion of reactants is accurate and the reaction is sufficient. After the preparation is completed, pure ammonium hydrogen fluoride products can be obtained through various processes such as evaporation concentration, cooling crystallization, filtration, and drying. And at the time of preparation, factors such as the purity of raw materials, reaction temperature, and time all have a significant impact on the quality and yield of the product. Careful consideration and careful operation are required to obtain high-quality ammonium hydrogen fluoride.