What is the main use of Ammonium silicofluoride?

Ammonium fluorosilicate has a wide range of uses. In the field of industry, one can be used as a wood preservative. Wood is easy to damage in case of rot. Treating it with ammonium fluorosilicate can increase its corrosion resistance, which can protect the wood for a long time. It is used to protect wood in house construction, boat production and other things.

Second, it is also very useful in the ceramic industry. It can be used as a flux to make the material easier to melt when the ceramic is fired, and the texture of the finished product is denser and smoother. It can reduce the firing temperature, save energy, improve the production efficiency and quality of ceramics, and make the color and shape of ceramics perfect.

Furthermore, in agriculture, it can be used as a trace element fertilizer. Plant growth requires various elements. Ammonium fluorosilicate contains silicon, fluorine and other elements. Although the amount is not large, it also plays an important role in plant physiological activities. It can help plants grow sturdily and increase their resistance to stress, such as disease and insect resistance, lodging resistance, etc., thereby improving the yield and quality of crops.

In the glass manufacturing industry, it can participate in the formulation of glass. It can adjust the chemical composition and physical properties of glass, such as changing the thermal expansion coefficient of glass, improving the chemical stability and mechanical strength of glass, making the glass more suitable for different purposes, or transparent glass for windows and windows, or special glass for instruments. Overall, ammonium fluorosilicate is of great significance in various industries and has made significant contributions to the prosperity of various industries.

What are the physical and chemical properties of Ammonium silicofluoride

Ammonium fluorosilicate has the following physical and chemical properties:

This substance is colorless and crystalline, or white powder, tastes sour, and has hygroscopicity. It is soluble in water, decomposes in hot water, and its aqueous solution is acidic. When heated, it will gradually decompose and escape gases such as hydrogen fluoride.

Its density has a certain value, which varies slightly depending on the preparation and impurity situation. As for the melting point, it also varies due to specific conditions.

Ammonium fluorosilicate can react with alkali substances to form corresponding salts and fluorides. Under certain specific conditions, it can also react with metal ions to form new complexes.

In addition, it is widely used in the industrial field. In the ceramic industry, it can be used as a flux to reduce the firing temperature of ceramics and improve product quality. In glass manufacturing, it can improve the properties of glass, such as enhancing its hardness and corrosion resistance. In agriculture, it can be used as a trace element fertilizer to supplement plants with silicon, fluorine and other elements to promote crop growth. However, it should be noted that it is toxic. When using and storing, follow the corresponding safety procedures to prevent harm to the human body and the environment.

Ammonium silicofluoride needs to pay attention to when storing and transporting

Ammonium fluorosilicate, during storage and transportation, many matters must be paid attention to. This is a matter related to the characteristics and safety of things, and must not be ignored.

First of all, the properties of ammonium fluorosilicate should be understood. It has certain chemical activity, is easy to react with other things, and has strict requirements on the temperature and humidity of the storage environment. If the temperature is high, it may cause it to decompose and deteriorate, and if it is wet, it is easy to deliquescent and damage its quality. Therefore, the storage place should be dry, cool and well ventilated. The temperature should be maintained at 15 ° C - 25 ° C, and the humidity should be controlled below 60%.

Furthermore, in terms of packaging, it cannot be ignored. The packaging must be strict to prevent air and water vapor from invading. Usually wrapped in a sealed plastic bag and wrapped in a sturdy plastic woven bag or iron drum to ensure that there is no risk of leakage. During transportation, be more careful to avoid packaging damage.

When transporting, ammonium fluorosilicates should not be transported with alkaline substances and strong oxidants. Because of its encounter with alkali, it is easy to react violently, or cause safety accidents; mixed with strong oxidants, there is also a latent risk. During loading and unloading, operators should wear protective equipment, such as protective clothing, gloves, goggles, etc., to prevent contact with skin and eyes. If inadvertent contact, rinse with plenty of water quickly and seek medical attention in time. < Br >
In addition, clear warning signs should be set up at the storage and transportation places to indicate the danger of this substance, so that everyone can be alerted. In this way, the safety and quality of ammonium fluorosilicate during storage and transportation can be guaranteed.

Ammonium silicofluoride production methods

Ammonium fluorosilicate, the method of its preparation, has existed in ancient times, and after years of changes, there are still several paths today.

One method is to combine silicic acid with hydrofluoric acid and ammonium salts. Take an appropriate amount of silicic acid and slowly inject it into the liquid of hydrofluoric acid. Be careful during this period, because hydrofluoric acid is highly corrosive. After the two fully react to form fluorosilicate, add ammonium salts, such as ammonium chloride, ammonium sulfate, etc. Ammonium ions combine with fluorosilicate ions to obtain ammonium fluorosilicate. This process requires precise temperature control, usually at room temperature or slightly above room temperature, in order to promote a smooth reaction and a pure product.

The second method uses silica as the starting material. The silica is first pulverized to make its particle size suitable, and is co-placed in a special reactor with hydrofluoric acid and ammonium salts. Under the action of hydrofluoric acid, silica is gradually converted into fluorosilicic acid, and then combined with ammonium salt, and finally ammonium fluorosilicate. The key to this path lies in the quality of silica and the fine regulation of reaction conditions to improve the yield and purity of the product.

The third method is to use soluble silicate to react with fluoride and ammonium salts. Select common sodium silicate, prepare it into a solution, and mix it with a fluoride-containing solution, such as sodium fluoride solution. When the two meet, fluoride ions combine with silicate ions, and then an ammonium salt solution is added. Ammonium ions combine with the generated fluorosilicate to crystallize ammonium fluorosilicate. This process has strict requirements on the concentration of the solution, the sequence of reactions and the reaction time, in order to prepare high-quality ammonium fluorosilicate.

All these various production methods have their own advantages and disadvantages. It is necessary to weigh the choice according to the actual product purity, yield and cost and many other factors to achieve the best preparation effect.

Ammonium silicofluoride impact on the environment and human body

Ammonium fluorosilicate has a considerable impact on both the environment and the human body.

At the environmental end, if the content in the soil exceeds the normal level, it is easy to cause changes in soil chemical properties. Or acidify the soil, which not only damages the soil structure, but also causes its fertility to gradually disappear, but also imbalances the soil microbial community, and many beneficial microorganisms are difficult to survive, affecting the cycle of soil ecology and material transformation. And when it migrates with the flow of water, it enters rivers, lakes and seas and other water bodies, or causes water bodies to be eutrophication. Excessive amounts of fluorine, silicon and other elements can disturb the normal metabolism and growth of aquatic organisms, and fish, shrimp and shellfish may be harmed by them, causing damage to biodiversity.

As for the human body, if you inhale the dust containing ammonium fluorosilicate, you will be the first to bear the brunt, and the respiratory system will be affected. It may cause cough, asthma, dyspnea, etc. Long-term exposure, and it is more likely to cause lung diseases, such as pneumoconiosis. If ingested orally, it is also harmful to the digestive system. The intestinal and gastric mucosa may be irritated and corroded, and nausea, vomiting, abdominal pain and diarrhea may occur. Furthermore, excessive intake of fluorine can deposit in bones and teeth, affect calcium and phosphorus metabolism, easily cause dental fluorosis in children, and fluorosis in adults. Joint pain, deformation, and even affect limb activities, which have a profound impact on quality of life. Therefore, the use and discharge of ammonium fluorosilicate should be treated with caution to prevent it from causing serious harm to the environment and humans.