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What are the main uses of Ammonium Bifluoride Crystals?
Ammonium hydrogen fluoride crystal, that is, ammonium hydrogen fluoride crystal, has many main uses. In industry, it is a key material for etching glass. It can react delicately with silica, the main component of glass, to precisely etch the glass surface, making the glass show all kinds of exquisite patterns and detailed patterns. For example, in the field of artistic glass production, this technique can make glass products glow with unique beauty, showing the ingenuity and exquisite craftsmanship of craftsmen.
In the treatment of metal surfaces, this crystal also plays an indispensable role. It can effectively remove the oxide layer and impurities on the metal surface, making the metal surface cleaner and flatter, greatly enhancing the adhesion of the subsequent coating of the metal. For example, in the pretreatment process of aluminum alloy products, ammonium hydrogen fluoride crystals are used after treatment, and then the coating operation is carried out. The coating is more closely combined with the aluminum alloy matrix, thereby significantly improving the corrosion resistance and aesthetics of aluminum alloy products and prolonging their service life. It is of great significance in fields such as aerospace and automobile manufacturing that require extremely high performance of metal materials.
In the field of chemical synthesis, ammonium hydrogen fluoride crystals often participate in many chemical reactions as an important fluorinating agent. It can introduce fluorine atoms into the reaction, and fluorine-containing compounds have unique and irreplaceable properties in many fields such as medicine, pesticides, and materials. For example, in the development and synthesis of new fluorinated drugs, the fluorine atoms provided by ammonium hydrogen fluoride crystals can change the electron cloud distribution of drug molecules, thereby improving the biological activity, fat solubility and other key properties of drugs, helping to develop more efficient and safe drugs, and contributing to human health.
In addition, in the refining process of some rare earth elements, ammonium hydrogen fluoride crystals also play an important role. It can assist in the effective separation of rare earth elements from other impurity elements, improve the purity of rare earth elements, which is of great significance for the efficient utilization and development of rare earth resources, and provides a solid raw material guarantee for high-tech industries.
What are the Storage Conditions for Ammonium Bifluoride Crystals?
Ammonium hydrogen fluoride crystals, that is, ammonium hydrogen fluoride ($NH_4HF_2 $) crystals, are stored under critical conditions that affect their quality and safety.
This crystal is corrosive and toxic, and decomposes easily when heated. Therefore, it needs to be stored in a cool, dry and well-ventilated place. The temperature should be maintained at a low level to prevent it from being decomposed by heat. The temperature of the warehouse should be controlled between 15 ° C and 25 ° C, and the humidity should not exceed 75%.
should be avoided from co-storage with acids, bases, alcohols and other substances, because it will chemically react with them. And it must be stored separately from edible chemicals to prevent mixed storage and transportation, so as not to contaminate food and threaten human health.
Storage containers also need to be made of corrosion-resistant materials, such as plastic drums or iron drums lined with plastic. The container must be well sealed to prevent the crystals from absorbing moisture or volatilizing.
In daily management, the storage environment and crystal status should be checked regularly. If the packaging is found to be damaged, the crystal is agglomerated or there is a peculiar smell, etc., it needs to be dealt with in time. At the same time, the storage area should be equipped with corresponding emergency treatment equipment and suitable fire fighting equipment to prevent accidents. In this way, the stability and safety of ammonium hydrogen fluoride crystals during storage can be ensured.
What are the precautions in the use of Ammonium Bifluoride Crystals
Ammonium hydrogen fluoride crystals, that is, ammonium hydrogen fluoride crystals, this material is corrosive and toxic. When using it, many matters should not be ignored.
First protection, you must wear protective clothing, protective gloves and goggles. Because it is highly irritating and corrosive to the skin, eyes and respiratory tract, it will cause burns at a slight touch. If you accidentally touch the skin, rinse with plenty of water quickly, and then seek medical attention; if it enters the eyes, you need to rinse with plenty of water immediately, and be sure to seek medical treatment.
Furthermore, it is easy to deliquescent in the air, should be stored in a dry, well-ventilated place, and tightly sealed to prevent it from moisture and deterioration, and to prevent it from evaporating harmful gases. The use environment also needs to be well ventilated. It is best to operate in a fume hood to expel volatile gases in time, reduce the concentration of harmful substances in the air, and reduce the harm to the human body.
Repeat, during use, strictly follow the operating procedures. When taking it, use clean appliances to avoid impurities from mixing into it and causing its properties to change. When configuring the solution, pay attention to the sequence and concentration control. Generally, it is slowly added to the water, rather than pouring water into it, and stir it evenly to prevent local overheating or severe reaction.
In addition, ammonium hydrogen fluoride crystals have certain chemical activity. Do not store or mix with strong oxidants, acids, etc., to prevent dangerous chemical reactions, such as explosions and toxic gases.
At the end, after use, properly dispose of the remaining crystals and waste. The remainder is sealed and stored in a designated place, and the waste is disposed of in accordance with relevant regulations. It cannot be discarded at will to avoid polluting the environment.
In short, when using ammonium hydrogen fluoride crystals, it is necessary to be cautious. All protection and operation details are taken into account, so as to avoid accidents.
Ammonium Bifluoride Crystal Production Process
Ammonium hydrogen fluoride crystals are commonly used in chemical industry. Its production process is exquisite and complicated, with multiple procedures.
The first is to prepare raw materials. Select high-quality hydrofluoric acid and ammonia as sources. Hydrofluoric acid must be pure, ammonia must also be purified, and impurities must be removed to achieve purity, to ensure the quality of the product.
The second is the reaction and synthesis. In a special reactor, inject hydrofluoric acid and ammonia in a precise ratio. Control the temperature, pressure and reaction time to promote the synthesis of ammonium hydrogen fluoride from the two. The temperature is usually stable in a specific range. If it is too high, it will cause the product to decompose, and if it is too low, the reaction will be slow. The pressure also affects the reaction efficiency and product morphology. After
, the crystallization is separated. After the reaction is completed, the temperature is After a special cooling procedure, ammonium hydrogen fluoride comes out in crystal form. Then by filtration, centrifugation and other methods, the crystal is separated from the mother liquor. The mother liquor or is used in a circular manner to improve the utilization rate of raw materials.
The end is dry packaging. Wet ammonium hydrogen fluoride crystals are dried and removed to reach the specified water content. Then they are sealed and packaged to prevent moisture absorption and deterioration, and then stored and transported.
In this way, through raw material preparation, reaction, crystal separation and dry packaging, the production of ammonium hydrogen fluoride crystals is formed, and each step is carefully controlled to obtain high-quality products.
Ammonium Bifluoride Crystal Market Price Range
Ammonium hydrogen fluoride crystals, the range of market prices varies from time to time, and also varies due to factors such as quality, origin, and supply and demand. In the past, the price fluctuated differently. When materials were scarce and the craftsmanship was not refined, the price may be high; today, the craftsmanship is gradual, the output is gradually increasing, and the price has dropped.
Looking at the past years, during the Taiping period, if the supply of goods was sufficient and the quality was ordinary, the price per catty was about a few dollars to more than ten dollars. If the quality is high, the price of carefully selected products may be slightly higher, up to about twenty dollars. In case of bad weather, such as drought and flood disasters, affecting the production of raw materials, causing a shortage of supply, the price will jump, or to thirty dollars per catty, or even higher.
If it is located in a remote location, the transportation is inconvenient, and the transportation is difficult, the price will also increase. And in places where businesses gather, the price may be slightly lower due to competition; while in remote areas, the supply is scarce, and the price must be high. In short, the market price range of ammonium hydrogen fluoride ammonium crystals can be as little as a few dollars per catty, as much as twenty or thirty dollars, or even higher. It is difficult to generalize, and it must be considered in detail.
