Thiazole-5-boronic acid pinacol ester

Borax is cold in nature and has a sweet and salty taste. Its main uses are many, and it is involved in various fields such as medical, industrial and technical, and daily use.
In the medical tract, borax has the ability to clear away heat and detoxify, and can treat sores on the tongue and throat, swelling and pain. Ancient physicians often used borax with medicines to make powders and ointments. For example, to treat swelling and pain in the throat, borax is combined with borneol, Xuanming powder, etc., finely ground, blown on the affected area, which can clear away heat and reduce swelling, slow pain and improve throat. Its heat-clearing power can detoxify coke and heat, make the throat clear and smooth speech.
In the field of industrial technology, borax is also quite important. In metallurgy, borax can be used as a flux. When metal smelting, borax is added to reduce the melting point of ore, promote the separation of metal and impurities, make smelting easier, and the metal purity is higher. For foundry utensils, borax can remove metal surface oxides, making the surface of the casting smooth and less flawed. In glass manufacturing, borax can increase the thermal and chemical stability of glass, making the glass more temperature-resistant and corrosion-resistant. For example, fine glazed utensils, borax is indispensable.
In terms of daily use, borax also has its uses. In the past, when washing clothes, adding borax in moderation can help decontaminate and make clothes clean. And borax is also effective in anti-corrosion, which can ensure that some items will not be damaged for a long time.
When using borax, be aware of its properties and should not be abused. Only when the dosage is appropriate can we take advantage of its benefits and avoid its harm, which is true for medical, industrial and technical skills, and daily use. In this way, the energy of borax can be well utilized for the benefit of people.

There are many kinds of methods for making frost, each with its own subtlety. Take the frost-making of acid anhydride as an example, and the ancient Fang family has explored it a lot.
One method is to take a few arsenic stones and calcine them with charcoal fire. When arsenic stone is heated, its gas rises, and when it is cold, it condenses on the utensils, which is the beginning of arsenic. However, this method needs to pay attention to the heat. If the fire is large, the arsenic gas will dissipate, and if the fire is small, the arsenic stone will not melt, and it will be difficult to form frost.
The second method is to place arsenic in a crock and seal the mouth, leaving only a small hole. Simmer slowly in the furnace, and when the arsenic in the jar melts, its gas will escape from the hole and be received by porcelain. When the escaped gas is cold, it gradually condenses into In this process, the tightness of the seal and the accuracy of the heat are of paramount importance. A slight mismatch in the pool may cause the leakage of arsenic gas, endangering the human body.
The third method is to fly with water. First grind the arsenic into fine powder, place it in the water, and stir it evenly. The fine powder of arsenic is layered in the water due to different specific gravity. Discard the upper layer of water, leave the lower layer of arsenic powder, and repeat several times until the water is clear. Then put the resulting arsenic powder in a cool place to dry, and a relatively pure arsenic can be obtained. However, the method of flying with water also needs to be handled with caution to prevent the arsenic powder from being lost with the water, and the water used needs to be clean and stain-free.
The art of making frost is a matter of life, and the operator must be in awe, abide by the ancient law, and be meticulous in order to achieve it without the risk of error.

Borax is the common name of sodium pentaborate. It has many physical and chemical properties.
In terms of physical properties, borax is a colorless translucent crystal or a white crystalline powder under normal conditions. It is soft, delicate to the touch, and has a salty taste. It can be slowly weathered in the air, has good solubility, and is easily soluble in hot water and glycerin. It dissolves slightly slowly in cold water, but is insoluble in ethanol. Looking at its appearance, it shows a regular crystal shape, or a fine powder shape, with a soft luster.
As for chemical properties, borax aqueous solution is alkaline, and hydroxide ions are produced due to the hydrolysis of borax. Borax can react with acids to form boric acid and other products. When it encounters certain metal ions, a complex with a characteristic color is formed, which can be used to identify specific metal ions. For example, borax reacts with copper ions to form a characteristic blue complex. Borax undergoes a series of changes under heating conditions, first losing its crystalline water, and then further decomposing. In addition, borax has important uses in many fields such as metallurgy, chemical industry, and medicine. It can be used as a flux in metallurgy. It is a key raw material for the manufacture of boron-containing compounds in the chemical industry. It also has the equivalent effect of disinfection and anti-corrosion in medicine. In short, the unique physical and chemical properties of borax make it play an indispensable role in many fields.

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First, moisture-proof is essential. Alumite is easy to absorb moisture, and if it encounters damp and moist gas, it is easy to agglomerate, causing its quality to be damaged. When it is stored, it must be dry and ventilated to avoid dark and humid places. And the utensils containing alumite should also be well sealed so that moisture cannot invade.
Second, anti-corrosion should not be ignored. Alumite is corrosive to a certain extent, so it should not be stored or transported with materials that are easily corroded. The containers used should be made of corrosion-resistant materials, such as ceramics, plastics and other special utensils, and should not be made of metal materials to avoid erosion, causing damage to the container and leakage of alumite.
Third, classification and storage are reasonable. Different kinds of alum stone may have different properties. If they are mixed for storage and transportation, they may cause chemical reactions and cause quality variation. Therefore, all kinds of alum stone should be placed separately and clearly marked for identification and use.
Fourth, during transportation, shock and collision prevention are essential. Alum stone is brittle in texture. If it is subject to violent vibration or collision, it is easy to break into powder, which affects its use. When transporting, the packaging should be tight and stable, with built-in cushioning materials, such as hay, cork, etc., to absorb shock and shock.
Fifth, fire protection cannot be ignored. Although alum stone itself is not flammable, it may be transported and stored in a place where there are other flammable materials. And in some chemical reactions, alum stone may be a combustion-supporting factor. Therefore, fireworks are strictly prohibited in the surrounding environment, and fire protection facilities should be complete to prevent accidents.
In this way, careful attention should be paid to all matters to ensure that alum stone is stored and transported, and the quality is intact and safe.

Nowadays, there are many kinds of incense, and the five kinds of acetic acid incense, what is the market? The incense of acetic acid is determined by factors such as product quality, location, and workmanship.
If it is common sense, the market value of ordinary products may be between ten and one or two hundred. This incense is often used, the workmanship is not good, and the materials used are not high-quality.
However, if it is an exquisite one, the materials are excellent, and the workmanship is exquisite. If it is integrated into the general special effects method, it may rise to three or four hundred, or even higher. Such incense may be used for important and respected people, so it is expensive.
There are also those who rise in price due to the brand. The fragrance produced by the famous Hechuaifang is due to its trust and word-of-mouth. Even if the product is similar to others, it may be higher than usual.
Of course, acetic acid is fragrant, with a low price of ten texts and a high of 100 texts. It depends on the situation.