benzo(b)thiophene-2-boronic acid

The main use of boron (b) sand is found in many ancient books such as "Tiangong". Borax is used in ancient times to make sand.
First, in metallurgy, borax can be used for melting. For metallurgy, adding borax can reduce the melting of gold, make the gold more fusible, and can remove the gold in the gold, improve the gold, and improve the amount of gold. For example, borax can help to divide the gold in the gold, making the gold more efficient.
Second, in the production of ceramic glass, it is essential. Adding borax to ceramic glazes can improve the properties of glazes, make the glaze smoother and more uniform, and increase the beauty and resistance of ceramics. In making glass, borax can reduce the degree of melting of glass, save energy, and can improve the quality and quality of glass, making the glass more durable. For example, borosilicate glass has good resistance due to borax content. It is often used for high-quality utensils such as bottles and tubes and high-quality glass products.
Third, it is also useful in the field of glass production. Borax has the functions of clearing and detoxifying and preventing corrosion. In ancient times, borax is often used externally to treat mouth and throat pain. It can be used as a powder, sprinkled on the patient, to clear, relieve pain and prevent corrosion.
Fourth, in the washing of daily life, borax can be used as a washing aid. It can increase the decontamination ability of washing, help remove the solids on the clothes, and make the clothes wash better.

Boron (b) anhydride is diboron trioxide ($B_ {2} O_ {3} $), which can be prepared by dehydration of boric acid. The specific synthesis method is as follows:
1. ** Direct dehydration method **: Take an appropriate amount of boric acid and place it in a clean crucible. Heat slowly over low heat, the boric acid is heated, and the crystal water is lost first, and then gradually dehydrated. During this process, pay attention to the control of temperature, and do not heat up too quickly to avoid sintering of the product. Continue heating until the boric acid is completely converted to white boronic anhydride. The reaction equation is: $2H_ {3} BO_ {3}\ stackrel {\ Delta }{=\!=\!=} B_ {2} O_ {3} + 3H_ {2} O $. This method is relatively simple to operate, but the temperature and heating time need to be precisely controlled to ensure complete dehydration.
2. ** Chemical Vapor Deposition Method **: A boron-containing gaseous compound, such as boron trichloride ($BCl_ {3} $) and oxygen ($O_ {2} $), are introduced into the high-temperature reaction chamber in an appropriate proportion. In a high-temperature environment, boron trichloride reacts chemically with oxygen to deposit boron anhydride on the surface of the substrate material. The reaction equation is roughly: $2BCl_ {3} + 3O_ {2}\ stackrel {high temperature }{=\!=\!=} B_ {2} O_ {3} + 3Cl_ {2} O $. This method can prepare high-purity, high-quality boron anhydride films, which are often used in electronic devices and other fields that require strict material purity, but the equipment is complex and the cost is high.
3. ** Melting method **: Put the boric acid and an appropriate amount of flux into a high-temperature container, heat it to a high temperature to melt. In the molten state, the boric acid accelerates dehydration and converts to boron anhydride. After the reaction is completed, cool the melt to obtain the boron anhydride product. Selecting a suitable flux can reduce the reaction temperature and shorten the reaction time. This method is suitable for large-scale production of boron anhydride, but the purity of the product may be affected by the flux, and subsequent purification treatment is required.

Boron (b) sand is a kind of substance. Its physical and chemical properties are quite characteristic.
In terms of its physical properties, borax is mostly colorless and translucent crystals or white crystalline powder at room temperature. Its touch is delicate, and its appearance is often shiny. The density of borax is moderate, about 1.73 g/cm3. This substance is easily soluble in water, and it dissolves more rapidly in hot water. When borax dissolves in water, the solution shows a certain viscosity. And the melting point of borax is not very high, about 743 ° C. When heated to this temperature, borax melts into a glassy substance.
As for its chemical properties, borax is alkaline to a certain extent. In aqueous solutions, hydrolysis reactions can occur, making the solution alkaline. Borax can react with a variety of metal ions to form compounds with special properties. For example, when interacting with copper ions, blue complexes can be formed. Borax also participates in many chemical reactions, such as reacting with acids, to form boric acid. This boric acid is also an important chemical raw material and is used in many fields. Borax is relatively stable in air and is not easy to be oxidized, but long-term exposure to humid environments may absorb water and cause deliquescence.
Borax is widely used in industry, medicine, agriculture and many other fields. It is an important chemical substance. Its unique physical and chemical properties lay the foundation for its application in various fields.

Borax (b) - 2 - boric acid in the process of storage and recovery, pay attention to the following general things:
The first time it is stored, it must be dry, and it must be good. Borax and boric acid have a certain degree of absorption. If they are in the environment of tide, they are easy to cause deliquescence and make the product suffer. For example, in a workshop, because the tide in the place where borax is stored is often, soon, the borax will become a paste, and the method will be used as usual, which will only increase the numbness. Therefore, it is the best policy to keep the dry tide in the place where it must be preserved.
Furthermore, both should be stored in equal parts of acid, oxygen and oxidation. Due to the chemical properties of borax and boric acid, if it is combined with this substance, it is easy to cause chemical reactions and cause its properties to be changed. In the past, there was an accidental storage of borax and boric acid in one container, which caused severe reactions, and it was like a raw animal, which did not affect the health, and endangered the people around it. Therefore, it should be stored separately, and it must not be ignored.
On the way, you should not lose your heart. The package must be firm to prevent damage and leakage. If borax or boric acid leaks outside, it will not be damaged, and it is more likely to be contaminated, or even endanger the safety of people. In the past, due to the unsolidification of the package, boric acid leakage caused the road to be stained, and the cleaning force was difficult. Therefore, the firmness of the package and the diligence of the inspection are indispensable.
In addition, it is necessary to have a clear and clear understanding of whether it exists or not. Express its product name, sex, harm and method, so that the other person can know it as soon as possible, and in case of trouble, it can also be properly managed according to the guidelines.
In addition, borax and boric acid are stored and stored in the environment, the division of materials, and the fixation of packages. All kinds of things should be paid attention to, and there should be no slight negligence.

I have heard that you have asked the turtle and (b) A-2 - What is the quality of the city of acid. This needs to be studied in many ways, let me tell you.
First, the turtle is combined with (b) A and A-acid, and its market price is affected by general factors. One is the quality of the land. The turtle and (b) A in different regions are also different due to special conditions such as water and soil, weather, etc., which leads to the difference in price. For example, in a place with beautiful mountains and rivers, or because of the good environment, the quality of the product is high, and the price is high.
Second, the quality of the product. Turtle and (b) The integrity, color, year, etc. of the armor are all elements of the standard. If the demand for complete, dark, and old is high, the price will be higher than that of broken, dark, and old. The degree and amount of acid extraction also affect the price of the product. Raising excellent and rare acids will be a lot of money.
Third, the supply and demand of the market will be low. If the demand for (b) A and A acids in the lower world or the industrial world increases greatly, and the supply is limited, the price will be high. On the contrary, if the supply is limited, the price will not fall.
Generally speaking, the price of turtles and (b) A is different, depending on the product, each catty may vary from ten to 100. However, if the acid is improved to a good level, it may be around 100% per year or 100%, but it is also uncertain. It is the melting and floating of general factors, and it is necessary to note the quality of the market before we can know its quality.