3-Bromothiophene-2-sulphonyl chloride

3-Nitrate water, that is, nitric acid, 2-caustic soda water, that is, sodium hydroxide solution, the following describes the physical properties of caustic soda water and nitrate water:
###Nitrate water (nitric acid)
The pure nitrate water is a colorless, pungent odor liquid with strong corrosiveness. Common commercials are mostly nitric acid solutions of about 68%.
- ** Boiling point and melting point **: Under normal pressure, the boiling point of pure nitric acid is about 83 ° C, and the melting point is about -42 ° C. This property makes nitric acid liquid at room temperature and relatively volatile. < Br > - ** Volatility **: Concentrated nitric acid is highly volatile. When exposed to air, nitric acid molecules will evaporate and escape, combine with water vapor in the air, and form a white mist. This is a small droplet of nitric acid.
- ** Solubility **: Nitric acid and water can be miscible in any ratio, and a lot of heat will be released when dissolved. When configuring a dilute nitric acid solution, it is necessary to slowly inject concentrated nitric acid into the water and stir it continuously to disperse the heat evenly and avoid danger caused by local overheating.
###Caustic soda water (sodium hydroxide solution)
Caustic soda water is a solution obtained by dissolving sodium hydroxide in water. Pure sodium hydroxide is a white solid. < Br > - ** Boiling point and melting point **: The melting point of sodium hydroxide is about 318.4 ° C, and the boiling point is about 1390 ° C. Because of its high melting point, it is a solid state at room temperature, and it is configured to be liquid behind the solution.
- ** Deliquescence **: Solid sodium hydroxide has strong hygroscopicity. When placed in air, it will quickly absorb water and deliquescence, and the surface will gradually form a solution. Using this property, it is often used as a desiccant for some gases.
- ** Solubility **: Sodium hydroxide is very soluble in water, and the dissolution process will exothermic violently. When configuring caustic soda water, it is also necessary to slowly add sodium hydroxide solids to the water and stir constantly to prevent the solution from splashing due to local overheating. And caustic soda water is highly corrosive to skin, clothing, etc., so extra care should be taken when using it.

3-Hg is an important source of mercury. 2-Hg, that is, it can be observed in a small amount of time. The following describes its chemical properties:
It contains many elements such as chlorine and chlorine, and its properties are determined. Under normal conditions, it is solid crystalline, and most of them are white and white. Its crystals are complete and have a certain shape. This is a sign of its physical external chemical properties.
In terms of solubility, it is easily soluble in water, which is determined by its chemical properties. It can produce chlorine in water, and this process is rapid and complete. This property allows it to multiply and react in aqueous solution. If particles meet, a chlorinated white precipitate is formed. This reaction can be used in the presence of chlorine particles.
Furthermore, it has a high melting temperature. To make it melt or melt, a large amount of energy is required, which is caused by the strong force of particles. This property makes it possible to maintain a fixed stability in general environments.
Its active phase is low, and it is not easy to produce strong reactions to most substances under normal conditions. However, in specific environments, such as high-temperature and high-acid environments, it can also exhibit different assimilation behaviors. For example, in high temperatures and the presence of sulfuric acid, sulfuric acid can be reversed to generate chlorinated substances such as chlorine.
In other words, the chemical properties of the human body are determined not only by its physical form, but also by its anti-chemical mode in various chemical environments, which makes its use and role in nature and engineering very important.

For those who make frost and halogen, there are various ways to synthesize it.
One is the method of sublimating and making frost. If you take a pure material, put it in a suitable device, and slowly raise its temperature with fire, so that the material is sublimated by heat, and then condensed on the wall of the device when it is cold, then it becomes a frost-like thing. This is occasionally used in the processing of alchemy and some medicines. If the material is mild in nature and has the characteristics of easy sublimation, you can try this method.
Second, the method of grinding into frost. Choose high-quality raw materials, first use pestles and other tools, and grind them vigorously to gradually form a fine powder state. Then, with a silk sieve and other materials, a fine sieve is used to retain a very fine powder, which is a frost. This method is mostly used for materials with a solid texture and easy to crush, and is common in the processing of pharmaceutical factories and some rare materials.
Third, the crystallization frost method. Dissolve the material into a suitable solvent, such as water or wine as a solvent, and stir thoroughly to dissolve the material. After that, either slowly evaporate the solvent, or cool down to reduce the solubility of the material, so that it precipitates in a crystalline state to form a frost-like substance. This is commonly used in the extraction of brine and the crystallization of specific drugs.
Fourth, the chemical reaction frost method. Choose a variety of suitable materials, according to a certain ratio, so that it can undergo chemical reactions in a specific environment. Or due to the reaction, a new substance that is insoluble is formed, which is presented in a precipitated state. After separation, drying and other processes, frost-like products can also be obtained. In the synthesis of alchemy and some delicate potions, this method is often used to obtain the quality of frost halogen.
All these synthesis methods have their own applicable materials and situations. It is necessary to choose carefully according to the characteristics of the material, the use of the desired frost halogen and many other factors to obtain exquisite frost halogen products.

Today there is a question, where are triglycol and thiourea dioxide used? The two have a wide range of uses, and let me tell you one by one.
Triglycol is often found in the field of chemical extraction. Because of its excellent solubility and stability, it plays an extraordinary role in the natural gas dehydration process. Natural gas contains a lot of moisture. If it is not removed, it is easy to cause pipeline corrosion and affect transportation safety. Triglycol can be miscible with water. With the help of an absorption tower device, the water in the natural gas is absorbed, and then heated by a regeneration tower to separate triglycol from water and recycle it to ensure the drying of natural gas and reduce transportation risks.
Furthermore, triglycol is also common in the printing and dyeing industry. In the dyeing process, it can help the dye disperse evenly, improve the dyeing effect, make the fabric color bright and uniform, and improve the quality of the fabric.
As for thiourea dioxide, it is an important reducing agent in the textile printing and dyeing industry. Traditional reducing agents have many drawbacks, but thiourea dioxide has the advantages of high reduction potential and good stability. In the dyeing process of reducing dyes, the dye can be reduced to leucochrome, which is convenient for the fabric to absorb the dye. After dyeing is completed, it is oxidized to restore the original color of the dye, achieve the purpose of dyeing, and can effectively avoid fabric brittleness and improve the quality of dyeing.
In addition, in the papermaking industry, thiourea dioxide is also used. When making paper, lignin needs to be removed to improve the whiteness and strength of Thiourea dioxide can be used as a delignification aid to reduce lignin under mild conditions to help remove it from fibers, reduce the amount of chemicals, reduce environmental pollution, and improve the physical properties of paper.
In summary, triglycol and thiourea dioxide play a key role in many fields such as chemical industry, printing and dyeing, and papermaking, and have a profound impact on industrial production.

3% of the total yield is also an aid to the discharge. 2% of the total yield of nitrate, its storage and storage will be investigated.
The nitrate property is a good activity, and it is suitable for hiding in the dryness, moisture and transparency. Because it is easy to deliquescence, if it is damp, it is easy to absorb water, causing its shape to change, and even affecting the effectiveness of its products. Therefore, the dry place can keep the tightness of the nitrate, so that it can be hidden for a long time without loss.
The place where it is used is also important. Nitrate is easy to biochemical reaction, or decompose, or lead to other changes, and loses its original nature. If it is left in the dark, it can avoid the harm of high temperature and maintain its quality.
Good communication is also indispensable. It can make the air flow around the world, avoid undesirable effects caused by local accumulation or other accumulation of nitrate. And it can make possible harmful particles and disperse, and ensure the safety of the storage environment.
In addition, if you want to properly store nitrate, you must make sure that it is dry, dry, and common, so as to ensure its quantity and make it effective when it is needed.