pyridine-4-boronic acid

Borax is cold in nature, and its main application fields are many. In the field of medicine, borax can be used as a heat-clearing and detoxification agent. Gu Yun: "Borax is sweet, salty, and cold in nature. It has the power of clearing away heat and detoxifying, reducing swelling and antiseptic." It is often used to treat sore throat and mouth sores. In case of laryngeal paralysis, borax can be combined with various medicines to make a powder and blown on the affected area to reduce swelling, relieve pain, clear heat and clear throat.
In industry, borax is also widely used. In glass manufacturing, borax can increase the thermal stability and transparency of glass. Although there is no industrial scale in ancient times, it is also known that it can make the material better. If you add an appropriate amount of coloured glass when making it, the coloured glass will be more crystal clear.
Furthermore, in the metallurgical industry, borax can be used as a flux. It can reduce the melting point of metals, promote the separation of metal impurities, and make the smelting product more pure. Ancient cast swords smelt iron, or use it to make molten iron flow more easily, and the cast tool is tough and of high quality.
In agriculture, borax can be used as boron fertilizer. Boron is a trace element required for plant growth. Borax can make up for the lack of boron in the soil, promote crop growth and development, increase crop resistance, prevent flowers and fruits, and improve fruit quality.
In daily life, borax also has traces. For example, in some detergents, adding it can increase the decontamination ability. Although there are no modern detergents in ancient times, they may be used to clean fabrics to make them clean.
In short, borax has important applications in many fields such as medicine, industry, metallurgy, agriculture, and life. It is actually a widely used substance.

The method of adding boric acid to it can be studied in "Tiangong Wuwu". It follows the ancient techniques and is described in Chinese today.
First, borax and sulfuric acid are used to obtain boric acid. Borax, which is a natural boron-containing substance, is mixed with sulfuric acid. According to the ancient method, the device needs to be used, and the borax is broken, and it is thrown into the kettle containing sulfuric acid. On the contrary, the acid of sulfuric acid interacts with the weak acid of borax, and the sulfuric acid of borax is combined, and boron is released to form boric acid. In this case, the liquid in the kettle needs to be added to make the reaction complete, and the liquid should not be boiled out. After the reaction, the cold solution, boric acid analysis, can be taken by the method, and then washed with water, in addition, the dry time to obtain boric acid.
Second, by the action of boron sulfuric acid. Boron is also an important source of boron. First, the boron is crushed to facilitate the reaction. Put it in an acid-resistant device and add sulfuric acid to soak it. In this case, the sulfuric acid in the boron solution is reversed into sulfuric acid, and boron is mixed with boric acid. In the same way, the reaction solution needs to be added to promote the reaction, and the degree should be controlled. Reverse, solution, remove insoluble dross. The liquid contains boric acid and sulfuric acid, etc., which can be reduced by taking advantage of the solubility of boric acid to reduce the precipitation of boric acid, while the sulfuric acid remains in the mother liquor for the purpose of separation.
Third, the boron is used as raw material. Boron is broken and baked, etc., so that the chemical activity of boron is increased. The baked product of sulfuric acid co-reacts, and boron forms boric acid and dissolves in the liquid. First, the sedimentation is removed, and then the acid degree of the solution is reduced by the method of melting, so that the sedimentation is removed, and the liquid under the solution is removed. The boric acid will crystallize and come out after cooling. The finished boric acid is obtained by washing and drying.
This method is based on the principle of ancient transformation technology. The raw materials are easy to obtain and the operation is feasible. However, the basic method is still tested in today's boric acid.

Borax, its physical and chemical properties are special. Borax is a colorless translucent crystal, or a white powder with a glassy luster. It is soft, with a Mohs hardness of only about 2, and is quite easy to grind.
In terms of its solubility, borax dissolves well in hot water, but dissolves slightly slowly in cold water. This property is related to its many uses. If it is dissolved in water and heated, after cooling, borax will crystallize and precipitate, just like a natural crystal flower. This is the beauty of its dissolution in water.
As for the chemical properties, borax is alkaline. When it meets acid, a chemical reaction occurs to form boric acid and other substances. This reaction is quite important in many chemical processes. For example, in the preparation of some buffer solutions, borax can effectively adjust the pH of the solution and maintain the stability of the pH value of the solution due to its alkalinity and reaction characteristics with acids.
Borax also has certain stability. Under normal temperature and pressure, it can be stored for a long time without easy deterioration. However, in high temperature environments, borax will dehydrate and decompose, and its morphology and chemical composition will change.
Furthermore, borax burns in flames, causing the flame to take on a special color. This phenomenon can be used as an important basis for the identification of substances in flame color reactions. Due to its many unique physical and chemical properties, borax is widely used in glass, ceramics, medicine and many other fields. It is actually a wonderful substance endowed by nature to the world.

For borax, there are many things to pay attention to during storage and transportation.
Borax is delicate in nature, and the drying environment is the most important when it is stored. If it is in a humid place, borax is very susceptible to moisture. Once the borax is damp, its quality will be easily damaged, or it will cause agglomeration, which will affect its subsequent use. Therefore, a dry and well-ventilated place must be selected for storage. In the warehouse, it should also be protected from rainwater leakage, and moisture-proof measures must be taken on the walls and floors to prevent the borax from being attacked by moisture.
Furthermore, temperature is also the key. Borax should not be stored in places where the temperature is too high. High temperature can easily cause physical or chemical changes to borax, or cause its composition to change, affecting its inherent characteristics and efficacy. It is advisable to choose a place with a relatively constant and moderate temperature, usually a place with room temperature and not too hot.
As for transportation, the packaging must be firm. Borax needs to be tightly sealed with suitable packaging materials to prevent packaging damage due to bumps and collisions during transportation. If the packaging is damaged and the borax is scattered, it will not only be wasted or cause pollution to the transportation environment, but also damage the quality of the borax. And in the transportation vehicle, it should also be maintained in a dry state without moisture accumulation.
At the same time, the transportation of borax should also be careful to avoid mixing with other items. Borax may react chemically with certain substances, so it should be transported separately to prevent interaction. The transporter should also be aware of the characteristics of borax and pay careful attention during transportation to ensure that the borax arrives at the destination safely, so as to ensure its quality during storage and transportation for subsequent use.

There are those who ask about the market price and trend of boric acid today. The changes in the city are also impermanent. However, the reason can be found.
In the past, the prices of all things moved because of supply and demand. In the city of boric acid, if there are many people who need it, but there are few suppliers, the price will rise; if the supply exceeds the demand, the price will decrease. As for the trend, it also depends on the change of world conditions and the prosperity of business.
At this time, the world's industry and commerce are prosperous, and the use of boric acid, whether wide or narrow, is related to the city. If new technologies are developed, so that boric acid is of great benefit to various industries, and the demand increases sharply, its price will increase. And the production of the four sides is different. The government of the place of origin and the time of day are all related to supply. If the government of the place of origin is strict, the producer is cautious, or the weather is not smooth, the production is reduced, the supply is less, and the price also rises.
And watch the trade of the world, which is connected to each other. Foreign cities also involve boric acid. If the price of foreign countries is high, merchants will seek profits, and the supply in the inner market may decrease, and the price will rise accordingly; on the contrary, if the price of foreign countries is low, merchants will buy more goods, and the supply in the inner market will increase, and the price may decrease.
However, the change of the market is not limited to the supply and demand side. People's thoughts are also involved. If everyone says that boric acid will be expensive, if it is stored up, there will be few circulation in the market, and the price will also rise; if everyone thinks that it will be cheap and is eager to sell it, the price will drop. Therefore, if you want to know the price and trend of boric acid market, you should observe the changes in supply and demand, the prosperity of the technology industry, the state of trade, and the direction of people's hearts.