5-Chloro-thiophene-2-sulfonic acid amide

"Tiangong Kaiwu" has a saying: "Mirabilite, its essence is the essence of salt and brine, and it has a wide range of functions. Mirabilite and gypsum have their own needs in medical and industrial processes."
Mirabilite is a crystal formed by the frying of salt and brine. It is in the medical tract, and it is the first to diarrhea and accumulate. Doctors use it to treat the stagnation of real heat in the stomach and stomach, and the disease of dry stool. Cover mirabilite salty can be soft and firm, cold can clear heat, so that dry feces can go down, and the real heat can be cleared. For example, in Dachengqi soup, mirabilite is combined with rhubarb, magnolia, and citrus, and it is hot under the heat, and the evidence of treating the yang and bright organs. Those who are full of hard pain in the stomach and hot
In the process of manufacturing, glauberite also has its uses. In the leather industry, glauberite can be used as a hair removal agent and softener for leather. Treating leather with glauberite can make the hair of the leather easy to fall off, and make the leather soft in texture, which is convenient for subsequent processing. The leather made is more tough and durable.
Gypsum is cold in nature. In the medical system, the power of clearing away heat and purging fire is remarkable. According to medical records, gypsum is often used in the syndrome of heat and heat, and in those who are hot, sweating, thirsty, and have strong veins, gypsum is a necessary medicine. Such as Baihu soup, gypsum is used with Anemarrhena, clearing heat and generating body fluid, and relieving gas and generating real heat. And gypsum is used externally, which can treat sores and muscles, and treat ulcers that do not converge, eczema itching, water and fire burns and other diseases.
In industrial manufacturing, gypsum is often used in ceramics, cement and other industries. In ceramic production, gypsum can be used as a mold material. Because it has a certain strength and water absorption after solidification, it can make the ceramic body formed in the mold, and help the body to dissipate water, which is conducive to the forming quality. In cement production, an appropriate amount of gypsum can adjust the setting time of cement, avoid the cement from hardening too quickly, and ensure that the construction operation has enough time.
In summary, glauberite and gypsum, one is derived from brine and the other is ore. The two have their own important uses in medicine and industrial manufacturing, and are indispensable for people's livelihood.

Gypsum borax is a mineral, and its physical properties are different. It is detailed as follows:
Gypsum, the color is often white, or with light gray, light yellow tone, slightly soft, its Mohs hardness is about 2, and it feels smooth to the touch. Brittle, easy to break along the cleavage plane, the section often shows glass luster, or silky luster. When heated to a certain extent, it will lose its crystalline water, and its shape and properties will change. Its solubility in water is very small, but it has good thermal insulation, sound insulation, and fire resistance.
Borax is mostly white, light yellow, light blue, and has a beautiful crystal shape, often columnar or granular. The hardness is slightly higher than that of gypsum, about 2.5-3.5. The surface is glassy and the texture is brittle. Borax has a high solubility in hot water, and the aqueous solution is weakly alkaline. When it is heated, it will gradually lose water and expand, eventually forming a transparent glassy substance. And borax has the ability to help melt, which can reduce the melting point of metal oxides at high temperatures.
Gypsum is mostly used in construction, as a cement retarder, a material for gypsum board, and is also used by doctors to clear heat and purge fire. Borax is used in metallurgy to help melt metals. It is also an important raw material for glass and ceramics. It can be used in medicine to clear heat and detoxify, prevent corrosion and relieve itching. Both are important mineral raw materials and are crucial in many industries.

Well, what my dear brother asked is about the chemical stability of 5-bromouracil and thymine. These two, in the delicate field of chemistry, have a lot to study.
5-bromouracil, its structure is slightly different from that of thymine, but it shows different characteristics. Thymine, an inherent base of DNA, has been passed down for a long time. It plays an important role in the stable inheritance of inheritance. Its structure is quite stable under normal circumstances.
However, 5-bromouracil, due to the introduction of bromine atoms, has a different electron cloud distribution from thymine. Bromine atoms are highly electronegative and have a strong ability to attract electrons. As a result, the chemical activity of 5-bromouracil is improved. Under certain conditions, 5-bromouracil is prone to tautomerism. This phenomenon occurs when the molecular structure changes between different isomers, making it possible to pair with complementary bases in different structural forms during DNA replication, thereby interfering with the precise transmission of genetic information.
In contrast, thymine, due to its inherent stability of its structure, can usually follow the established base pairing rules and form a stable hydrogen bond structure with adenine, ensuring the accuracy of DNA replication and genetic information transmission. The chemical bond energy distribution in the molecule is reasonable, the interaction between the atoms is coordinated, and it is not easily disturbed by general environmental factors.
Therefore, compared with thymine, the chemical stability of 5-bromouracil is slightly inferior. The reason for this is that the intervention of bromine atoms breaks the balance of the original structure, making the molecule in a relatively active state, which is more prone to changes in complex biochemical processes.

To make borax, there are various ancient recipes. First, boron-magnesium ore can be used in combination with soda ash. For boron-magnesium ore, boron-containing ore is also mixed with soda ash, placed in a furnace, and calcined with intense fire. The reason for the reaction is that the boron component in boron-magnesium ore is combined with soda ash to produce borax and other things. When it is cold, it is rinsed with water to remove impurities, and then evaporated and crystallized to obtain borax.
Second, boric acid can be combined with soda ash. For boric acid, weak acid is also mixed with soda ash in an appropriate ratio, placed in a kettle, added water to dissolve, and heated on low heat. In the meantime, boric acid and soda ash neutralize and react to synthesize borax. After the reaction is completed, let it stand, so that the crystals can be produced, and then filtered, washed, dried, etc., to obtain pure borax.
Third, or it can be refined by natural borax ore. There are places in the world where borax is naturally produced. After the borax ore is mined, it is first crushed and then leached with water. The leaching liquid contains borax and impurities, which can be settled and filtered to remove coarse impurities. Then, the borax is purified by recrystallization. During recrystallization, the temperature and concentration are controlled so that the borax crystallizes well, and the impurities are left in the mother liquor and discarded. By this method, borax can be obtained, and each method is selected according to the convenience of raw materials, cost calculation, and quality requirements.

In today's city, the price of saltpeter borax varies according to its quality, the distance of the land, and the abundance of the time. Generally speaking, if saltpeter is an ordinary product, in various cities, the price per catty is about ten to thirty yuan. If its quality is pure and meets the needs of high quality, the price may jump, and the price can reach fifty yuan per catty, or even higher.
As for borax, it is a regular product in the market, and the price per catty is about twenty to fifty yuan. If it is a high-grade product of excellence, for rare karma, its price is high, and the price per catty or to eighty yuan, or even a hundred yuan is unknown.
However, this is only a rough estimate. In fact, in the market, the price often changes due to many reasons. Or the amount of output varies depending on the age; or the freight increases or decreases differently due to the distance of the journey; or the price increases or decreases due to the prosperity of the market demand. Therefore, in order to know the exact price, you must carefully observe the local market conditions at that time and visit the merchants to get the real number.