4-Fluorobenzenesulfonyl chloride is widely used in various fields of chemical industry.
In the field of pharmaceutical synthesis, it is often a key intermediate. Fluorine atoms and sulfonyl chloride groups can be introduced through specific reactions to endow drug molecules with unique physical and chemical properties and biological activities. For example, in the preparation of some antibacterial and antiviral drugs, 4-fluorobenzenesulfonyl chloride is used to participate in the reaction to shape specific structures, enhance the affinity of drugs to targets, and improve drug efficacy.
In the field of materials science, it also has important functions. Can be used to synthesize special performance polymers. Using 4-fluorobenzenesulfonyl chloride as raw material, after polymerization, the polymer may have excellent thermal stability, chemical stability and electrical properties. In electronic materials, high-performance coatings, etc., such polymers can play a unique advantage and meet the needs of special environmental use.
In the process of pesticide creation, 4-fluorobenzenesulfonyl chloride is also a common raw material. It can participate in the construction of pesticide active ingredients, and with the help of its structural characteristics, improve the effect of pesticides on pests and pathogens, and because of its fluorine-containing structure, it may enhance the environmental stability of pesticides and the ability to regulate bioconcentration, achieving the purpose of high efficiency and low toxicity.
Furthermore, in the field of organic synthesis chemistry research, 4-fluorobenzenesulfonyl chloride, as an active reagent, provides various possibilities for organic molecular structure modification and new compound creation. Chemists can use it to carry out various nucleophilic substitution, condensation and other reactions to expand the structure types of organic compounds and promote the development of organic synthesis chemistry.

Looking at this question, I am seeking the market price of 4-fluorobenzenesulfonyl chloride in China. However, this price often changes due to various reasons, and it is difficult to be sure.
Looking at the prices of chemical products in the past, they often vary with the supply and demand of raw materials, the progress of manufacturing technology and the competition in the market. For 4-fluorobenzenesulfonyl chloride, if the price of its raw materials rises, the price may also rise. Such as sulfonating agents and fluorinating agents, if they produce less and ask for more, the price will rise, resulting in an increase in the cost of 4-fluorobenzenesulfonyl chloride, and the market price will also be high.
In the case of seeking more, if various industries such as medicine, pesticides, and materials require more of this agent, the price may increase; if they require less, the price may decrease. And in different places, the price is also different. In places where the source of production is close and convenient, the price may be low; in remote and difficult places, the price may be high.
Furthermore, the progress of the manufacturing process also affects it. If the new technology is produced, it can reduce consumption and improve production, reduce its cost, and the price may decrease. Competition in the market is also the main reason. Many enterprises compete for the market, often competing for the price, and the price is low; if there is a lack of prices, the price may rise under control.
In today's situation, the exact number is not known. If you want to know the price, check the chemical market news, consult the manufacturer, seller, or you can get close to the actual price.

China 4 - Fluorobenzenesulfonyl Chloride, or 4-fluorobenzene sulfonyl chloride, is prepared as follows:
The starting material is 4-fluorobenzene, and the sulfonic acid group is introduced through a sulfonation reaction. In this process, concentrated sulfuric acid or fuming sulfuric acid are used as sulfonation reagents, and both have strong oxidizing and sulfonation activity. Under the control of appropriate temperature and reaction time, 4-fluorobenzene is fully contacted and reacted with the sulfonating reagent. The sulfur atoms in concentrated sulfuric acid or fuming sulfuric acid will attack the benzene ring of 4-fluorobenzene, and the sulfonic acid group (-SOH) will replace the hydrogen atom on the benzene ring to generate 4-fluorob
Subsequently, the generated 4-fluorobenzenesulfonic acid is chlorinated and converted into 4-fluorobenzenesulfonyl chloride. Commonly used chlorination reagents are phosphorus pentachloride (PCl), thionyl chloride (SOCl ²), etc. Taking thionyl chloride as an example, when it reacts with 4-fluorobenzenesulfonic acid, the chlorine atoms in the thionyl chloride will replace the hydroxyl group (-OH) in the sulfonic acid group to generate 4-fluorobenzenesulfonyl chloride. This reaction process will produce sulfur dioxide (SO ²) and hydrogen chloride (HCl) gases, which need to be properly handled to avoid environmental pollution.
During the reaction process, temperature control is extremely critical. In the initial stage of the sulfonation reaction, a moderate temperature rise is required to prompt the reaction to start. As the reaction advances, the temperature should be strictly controlled to prevent side reactions from occurring. During the chlorination reaction, the temperature should also be precisely controlled according to the characteristics of the selected chlorination reagent and the reaction process to ensure that the reaction is efficient and there are few by-products. At the same time, the reaction time should also be strictly controlled, not only to ensure that the reaction is sufficient, but also not to cause the product to decompose or generate more impurities if it is too long. The entire preparation process needs to be carried out in an environment with good ventilation and complete exhaust gas treatment equipment. Operators should strictly follow the operating procedures to ensure safe production.

China 4 - Fluorobenzenesulfonyl Chloride is a chemical substance, 4 - fluorobenzenesulfonyl chloride. Its Quality Standard is very important, and it is related to the quality and application of the product.
First, the content determination is crucial. The purity of this substance should reach a high level. Generally speaking, accurate analytical methods, such as high-performance liquid chromatography (HPLC), are required to ensure that the content of its main components meets the regulations. Usually, it should not be less than a specific percentage, such as 99.0%, so as to ensure the desired effect in subsequent chemical reactions and other applications.
Second, appearance properties are also key standards. Under normal circumstances, 4-fluorobenzenesulfonyl chloride should appear as a colorless to slightly yellow liquid. If the appearance is different, such as too dark or cloudy, or suggesting that it contains impurities or poor quality.
Furthermore, impurity control cannot be ignored. Related organic impurities, inorganic impurities, etc. must be strictly limited. Organic impurities or intermediate residues originating from the synthesis process, inorganic impurities or including chlorides, sulfates, etc., must be determined by suitable detection methods, such as gas chromatography-mass spectrometry (GC-MS), ion chromatography, etc., to ensure that the impurity content is within the acceptable range.
In addition, physical property standards are also meaningful. Physical parameters such as boiling point, melting point, density, etc. must be similar to the theoretical value. Boiling point may reflect its purity and the presence of azeotrope, etc. Accurate density determination can also help to judge the purity of the product.
In short, the Quality Standard of 4-fluorobenzenesulfonyl chloride covers many aspects such as content, appearance, impurities and physical properties. Only by strictly following these standards can we produce high-quality products to meet the needs of different fields.

China 4 - Fluorobenzenesulfonyl Chloride, or 4 - fluorobenzenesulfonyl chloride, is a commonly used reagent in organic synthesis. Its storage conditions are quite critical and need to be properly done to ensure its chemical stability and not deteriorate, which will affect subsequent use.
4 - fluorobenzenesulfonyl chloride is highly corrosive and reactive, so when storing, it should be sealed for the first time. It needs to be stored in a closed container to prevent contact with water vapor, oxygen and other components in the air. Because it is easily hydrolyzed in contact with water, it may also react with oxygen, resulting in a decrease in purity and damage to its quality.
Furthermore, the storage temperature needs to be strictly controlled. It should be placed in a cool place. Generally speaking, the temperature should be maintained at 2-8 ° C. If the temperature is too high, it may enhance its reactivity and accelerate decomposition and deterioration; if it is too low, it may affect its physical properties such as fluidity, which will cause inconvenience to the operation.
In addition, the storage environment must be dry and the humidity should be kept at a low level. Humid environment will greatly promote the hydrolysis of 4-fluorobenzenesulfonyl chloride, which seriously damages its chemical structure and properties.
At the same time, the storage place should be kept away from fire sources, heat sources, and flammable, explosive and other dangerous substances. Because of its own chemical nature, it is lively, and it may be exposed to open flames, hot topics, etc., or cause dangerous accidents, threatening the safety of personnel and
and the storage area should be well ventilated to avoid the accumulation of harmful gases. If 4-fluorobenzenesulfonyl chloride leaks, good ventilation can help the harmful gases spread as soon as possible and reduce the degree of harm.
The container for storing 4-fluorobenzenesulfonyl chloride should also be made of suitable materials. Usually glass or specific corrosion-resistant plastic materials are appropriate to ensure that the container does not chemically react with 4-fluorobenzenesulfonyl chloride to ensure storage safety.
In summary, the storage of 4-fluorobenzenesulfonyl chloride needs to be properly stored in a sealed, cool, dry, well-ventilated place away from dangerous goods, and in a suitable container to ensure its quality and safety for various uses such as organic synthesis.