Products

P-Chlorobenzenesulfonic Acid

Lingxian Chemical

Specifications

HS Code

700912

Chemical Formula C6H5ClO3S
Molar Mass 192.62 g/mol
Appearance White to light yellow crystalline solid
Odor Typical of sulfonic acids, pungent
Solubility In Water Soluble
Melting Point 62 - 66 °C
Boiling Point Decomposes before boiling
Density 1.55 g/cm³ (estimated)
Acidity Strong acid, dissociates in water
Stability Stable under normal conditions, but reactive with strong oxidizing agents
Packing & Storage
Packing 500g of P - Chlorobenzenesulfonic Acid packaged in a sealed plastic bag.
Storage P - Chlorobenzenesulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, open flames, and oxidizing agents. Store in tightly - sealed containers to prevent moisture absorption and leakage. Separate from incompatible substances to avoid reactions. Follow proper safety protocols during storage.
Shipping P - Chlorobenzenesulfonic Acid should be shipped in tightly - sealed containers, protected from moisture and heat. It must comply with hazardous chemical shipping regulations, ensuring proper labeling and secure handling during transit.
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P-Chlorobenzenesulfonic Acid
General Information
Historical Development
The industry of chemical industry is changing with each passing day, and many products have their own sources. Today P-Chlorobenzenesulfonic Acid, its source can be found in the past.
At the beginning, chemists devoted themselves to studying, wanting new products to meet all needs. After several years and repeated trials, this acid was obtained. Its initial appearance is also, the process is not refined, the output is quite small, only in a small room, carefully prepared.
After the years have passed, science and technology have gradually improved, and all kinds of skills have been improved. The method of preparation is improving day by day, and the output has gradually increased. From the production of small workshops, it has gradually entered the scale of large factories. This acid is used more and more widely, and is used in medicine, printing and dyeing, and is useful for the prosperity of various industries. Looking at the path of its development, it is actually the painstaking efforts of researchers of all dynasties that have brought it to today's prosperity.
Product Overview
"Overview of P-Chlorobenzenesulfonic Acid Products"
P-Chlorobenzenesulfonic Acid is a very important compound in chemical research. Its appearance is white crystalline and has unique physical and chemical properties. In terms of solubility, it is soluble in water and some organic solvents. This property makes it well dispersed in many chemical reaction systems, providing convenience for the smooth progress of the reaction.
Its preparation process is usually achieved through a specific chemical reaction path, and it is necessary to precisely control the reaction conditions, such as temperature, pressure and reactant ratio. A slight deviation may affect the purity and yield of the product.
In the industrial field, P-Chlorobenzenesulfonic Acid is widely used. It is often used as an intermediate to participate in the synthesis of various fine chemicals, which is of great significance to promote the development of the chemical industry. However, in the process of research and application, it is also necessary to pay attention to its safety, as it may be corrosive and irritating, and strict safety procedures must be followed during operation to ensure the safety of personnel and the environment.
Physical & Chemical Properties
P-Chlorobenzenesulfonic Acid is an organic compound, and its physical and chemical properties are quite important. This substance is solid at room temperature, white in color, and has a specific melting point, about [specific melting point value]. At this temperature, it gradually melts from the solid state to the liquid state. Its solubility also has characteristics, which can be dissolved in water. This characteristic is derived from the interaction between the molecular structure and water molecules.
From the perspective of chemical properties, P-Chlorobenzenesulfonic Acid is acidic. In chemical reactions, protons can be released, which neutralize with bases to form corresponding salts. The chlorine atom and sulfonic acid group on its benzene ring make the molecule have unique reactivity and can participate in a variety of organic synthesis reactions, such as nucleophilic substitution reactions. It provides important raw materials for organic synthesis chemistry and is widely used in the field of fine chemicals.
Technical Specifications & Labeling
Today there is P-Chlorobenzenesulfonic Acid, which is related to its technical specifications and identification (product parameters), which is the main point of our research. Its preparation needs to be based on precise methods, and the ratio of raw materials and reaction conditions must be investigated in detail. The control of reaction temperature and duration is related to product purity and quality.
On the label, the composition, content, hazard warning and other information should be clear and clear. Product parameters such as melting point, boiling point, solubility, etc., are also important markers that can help users clarify their characteristics. In the technical specifications, the limitation of impurity content and granularity all affect the use and value of the product. We should study the technical specifications and labels of this product in a rigorous manner to promote its quality and wide application.
Preparation Method
The method of preparing P-Chlorobenzenesulfonic Acid is related to the raw materials and production process, reaction steps and catalytic mechanism. First take benzene as the raw material and add chlorine to produce chlorobenzene, which is the key first step. Chlorobenzene is then heated with fuming sulfuric acid, the temperature is controlled in a suitable range, and after the sulfonation reaction, a sulfonic acid group is introduced on the benzene ring to obtain P-Chlorobenzenesulfonic Acid. During the reaction, the temperature and material ratio need to be precisely controlled to promote the complete reaction and obtain a high-purity product.
In the catalytic mechanism, sulfuric acid can activate the benzene ring, reduce the reaction energy barrier, and accelerate the process. In order to optimize the production, the process can be improved, and a high-efficiency catalyst can be selected to increase It is also necessary to pay attention to reaction safety, properly treat waste gas and wastewater, and follow the principles of green chemistry to achieve sustainable production.
Chemical Reactions & Modifications
To taste the wonders of chemical industry, it is essential to change substances, react and modify them. The chemical reaction of P - Chlorobenzenesulfonic Acid can be studied.
To make this substance, chlorobenzene is often co-heated with fuming sulfuric acid. In this reaction, the sulfonic acid group of sulfuric acid replaces the hydrogen of chlorobenzene to obtain P - Chlorobenzenesulfonic Acid. However, the reaction conditions need to be carefully regulated. If the temperature is too high, the side reaction will produce and the product will be impure; if it is too low, the reaction will be slow and time-consuming.
As for modification, other groups can be introduced to change its properties. Or neutralize with alkali to obtain the corresponding salt, which can increase its water solubility and be more advantageous in some applications. This is all chemical ingenuity, which is used by the world to control substances and benefit people.
Synonyms & Product Names
"P-Chlorobenzenesulfonic Acid of the same name"
P-Chlorobenzenesulfonic Acid, it is also a product of the same name. The same name is also used in the world. In the past, or in the name of "chlorobenzenesulfonic acid", this is based on its manufacture.
The name of the product is "chlorine sulfonate crystal", which means that the product has high chlorine and is crystalline, which shows its characteristics. There is also "chlorine aromatic sulfonate", which contains chlorine aromatic groups, and is rare with the word "".
The same name is the product name, which is used in the world, or in the past, or in the world of transportation, each has its own use, which is used to identify the circulation of this product and provide convenience.
Safety & Operational Standards
Specifications for the safety and operation of p-chlorobenzenesulfonic acid products
Those with p-chlorobenzenesulfonic acid are also chemical substances. Its characteristics have unique characteristics, which are related to safety and operation standards, and should not be careless.
#1. Storage rules
This product should be placed in a cool, dry and well-ventilated place. Keep away from fire and heat sources to prevent accidents. When stored separately from oxidants, alkalis, etc., it must not be mixed to avoid the risk of biochemical reactions. Where stored, suitable materials should be prepared to contain leaks, just in case.
#2. Qualified operation
Operators must undergo professional training, be familiar with the operation process, and strictly abide by the operation rules. When operating, wear protective gloves and goggles in front of suitable protective clothing to ensure your own safety. Avoid direct contact with this product. If you accidentally touch it, you should rinse it with plenty of water immediately. The operation site should be well ventilated to reduce the accumulation of harmful gases.
#3. The essentials of transportation
When transporting, the packaging should be stable and tight to ensure that there is no risk of leakage during the journey. Transportation vehicles should be equipped with corresponding fire protection equipment and leakage emergency treatment equipment. During transportation, prevent exposure to the sun, rain and high temperature. Do not mix with prohibited substances, drive according to the specified route, and do not stop in densely populated areas and residential areas.
#4. Emergency measures
If there is a leak, quickly evacuate the personnel from the contaminated area of the leak to the safe area, isolate them, and strictly restrict access. Emergency personnel wear self-contained positive pressure breathing apparatus and anti-acid and alkali work clothes. Do not let the leak come into contact with combustible substances. Small leaks, mixed with sand, dry lime or soda ash, collect in dry, clean, covered containers. Large leaks, build embankments or dig pits for containment, and transfer them to tanks or special collectors for recycling or transportation to waste disposal sites.
In short, the safety and operating standards of p-chlorobenzenesulfonic acid are related to personal safety and the environment, and should be handled with caution to ensure that everything goes smoothly.
Application Area
P-Chlorobenzenesulfonic Acid, or p-chlorobenzenesulfonic acid, has a wide range of application fields. In industrial production, it is often used as a key intermediate in organic synthesis.
Throughout the ages, organic synthesis has been related to many aspects of people's livelihood. P-chlorobenzenesulfonic acid can participate in dye synthesis. The use of dyes in fabric dyeing can increase the brilliance of its color and meet the needs of the world for clothing and other colors. Such as the dyeing of court fabrics in the past, the dyes made of p-chlorobenzenesulfonic acid may add its brilliance.
In the field of medicine, it also plays an important role. It can help synthesize specific pharmaceutical ingredients and contribute to the healing of diseases. Ancient doctors sought good medicines to treat diseases, but now the application of p-chlorobenzenesulfonic And in the manufacturing of some fine chemical products, in order to improve product performance, p-chlorobenzenesulfonic acid is also indispensable to promote the development of fine chemicals and meet the needs of society for high-quality chemical products.
Research & Development
The industry of chemical industry is changing with each passing day. In P-Chlorobenzenesulfonic Acid, there are many people who study it. Our generation also threw themselves into it to study its essence and observe its properties.
Begin to explore the method of its synthesis. Or through the reaction between chlorobenzene and fuming sulfuric acid, control its temperature and adjust its ratio to ensure a smooth reaction. However, in the process, the removal of impurities is quite laborious. If impurities exist, the pure loss of the product will be unfavorable for subsequent use.
Then, study its properties. Its nature is active, and it can be a catalyst for many reactions, with significant efficacy. In the field of organic synthesis, it can promote the speed of reaction and high yield.
As for the direction of development, we should seek a green path. Nowadays, environmental protection is the top priority, and if the synthetic method can reduce pollution and consumption, it is a long-term solution. And expand its use in new fields such as medicine and materials, or it can explore its potential and develop its great use, so that this industry can flourish and continue to progress.
Toxicity Research
The industry of chemical industry is related to people's livelihood, but the study of poisons in it cannot be ignored. Today, taking P-Chlorobenzenesulfonic Acid as a theory, its toxicity is investigated in detail.
This substance is also useful in various fields of chemical industry, but the study of toxicity is crucial. Looking at the structure of its molecules, chlorine is connected to the benzene ring, and there are sulfonic acid groups attached to it. Chlorine is active, or causes this substance to cause various reactions in living things.
Taste experiments, try them with various living things. See it or damage the organs of living things, or disrupt their physiological order. In plants, it hinders their growth, leaves lose their green color, and vitality gradually declines. In animals, it can cause changes in the functions of the viscera, and even endanger life.
Therefore, when studying the toxicity of this substance, one should be cautious. Observe its dispersion in the environment to prevent it from harming life. The prosperity of chemical industry is the benefit of the world, but the control of poisons is a long-term solution, which cannot be ignored.
Future Prospects
Nowadays, P-Chlorobenzenesulfonic Acid is not a fine matter in the field of chemical industry. Although it has been made at present, it will still have a grand future.
In the synthesis method, I hope it can be more subtle, reduce complexity and redundancy, reduce consumption and improve efficiency. Make the preparation process convenient and environmentally friendly, so as to meet the needs of the times.
As for the application, it should also expand new domains. Or it can be used in the manufacture of medicine to help the fusion of active ingredients; or in the research of materials to increase its specificity.
And the technology is changing, and the analysis technology must be more and more detailed. It can better understand the structure of its molecules, understand the rules of its reaction, and pave the way for its use.
Our chemical industry people, when we have grand ambitions, research and think carefully, hope to make P-Chlorobenzenesulfonic Acid shine in the future, for the progress of the world, and exhaust our wisdom.
Frequently Asked Questions
What is the chemical structure of P-Chlorobenzenesulfonic Acid?
P-Chlorobenzenesulfonic Acid is p-chlorobenzenesulfonic acid, and its chemical structure is as follows. In p-chlorobenzenesulfonic acid, the benzene ring is a six-membered carbon ring, and the six carbon atoms are connected in a conjugated structure with alternating single and double bonds to form a planar ring structure. In the para-position (i.e. 1,4-position) of the benzene ring, there are chlorine atoms and sulfonic acid groups respectively. In the sulfonic acid group (-SO-H), the sulfur atom is connected to three oxygen atoms, one of which is connected to the sulfur by a double bond, and the other two oxygen atoms are connected to the sulfur by a single bond and each has a negative charge, forming the acidic structure of the sulfonic acid with the hydrogen atom. The chlorine atom is directly connected to the carbon atom of the This structure endows p-chlorobenzenesulfonic acid with unique chemical properties. The conjugated system of the benzene ring makes it stable and aromatic. The chlorine atom has a certain electron-withdrawing induction effect, and the sulfonic acid group gives the compound acidity. Under certain conditions, various chemical reactions can occur, such as substitution reactions, acid-base reactions, etc.
What are the main uses of P-Chlorobenzenesulfonic Acid?
P-chlorobenzenesulfonic acid has a wide range of uses and has its traces in various industrial fields.
First, in the dye industry, it is a key intermediary. It can be converted into a wide variety of dyes through a series of chemical reactions. Its structural properties enable it to endow dyes with excellent color stability and dyeing properties. Taking the synthesis of some azo dyes as an example, p-chlorobenzenesulfonic acid participates in the construction of the basic structure of dye molecules, so that the dye is firmly attached to the fiber during the dyeing process of fabrics, and it is not easy to fade after sun exposure and washing, so as to improve the quality and practical value of the dye.
Second, it also has important uses in the field of pharmaceutical chemistry. Because of its unique chemical activity, it can be used as a starting material or intermediate for the synthesis of a variety of drugs. The preparation of some antibacterial and anti-inflammatory drugs requires the introduction of specific functional groups with the help of p-chlorobenzenesulfonic acid to precisely regulate the activity and pharmacological properties of drug molecules, and help develop new drugs with better curative effect and less side effects.
Third, in the preparation of surfactants, p-chlorobenzenesulfonic acid is also indispensable. After appropriate chemical modification, surfactants with unique properties can be prepared. Such surfactants are widely used in daily chemical products such as detergents, emulsifiers, etc., which can effectively reduce the surface tension of liquids, enhance the decontamination, dispersion, emulsification and other properties of products, and improve the use effect and quality of products.
Fourth, in organic synthetic chemistry, it is a commonly used reagent. In many organic reactions, it can act as an acidic catalyst to accelerate the reaction process and improve the reaction yield. Due to its moderate acidity and good stability, it exhibits unique catalytic activity under certain specific reaction conditions, enabling organic synthesis chemists to achieve efficient construction of complex organic molecules and promoting the development of organic synthesis chemistry.
What are the physical properties of P-Chlorobenzenesulfonic Acid?
P-chlorobenzenesulfonic acid is a kind of organic compound. Its physical properties are quite characteristic.
Looking at its morphology, at room temperature, it is mostly white needle-like or flake-like crystalline state, which is easy to identify. Its odor, slightly special, although not strong and pungent, can be detected under a fine smell.
When it comes to solubility, P-chlorobenzenesulfonic acid dissolves well in water. This is because the sulfonic acid group is a hydrophilic group, which can form hydrogen bonds with water molecules, so that it can be better dispersed in water. Not only that, it also has a certain solubility in some polar organic solvents, such as ethanol and acetone. This property makes it useful as a reactant or catalyst in organic synthesis reactions, and can play a role in various systems.
As for the melting point, the melting point of P-chlorobenzenesulfonic acid is relatively high, between 137-140 ° C. This higher melting point indicates that its intermolecular force is strong and its structure is relatively stable. The higher melting point makes it exist in solid form under normal circumstances, making it easy to store and transport.
Its density is also one of the important physical properties, with a relative density of about 1.55-1.60 (the specific value will vary slightly due to measurement conditions). This density value allows it to participate in the reaction or separation operation, according to the density difference, using appropriate methods, such as extraction, sedimentation, etc., to achieve separation from other substances.
In summary, the physical properties of P-chlorobenzenesulfonic acid, from morphology, odor, solubility, melting point to density, have their own characteristics. These properties play a key role in its application in many fields such as chemical industry, medicine, materials, etc., and determine the way it participates in the reaction, the means of separation and purification, and the conditions of storage and transportation.
What are the methods of preparing P-Chlorobenzenesulfonic Acid?
There are various ways to make p-chlorobenzenesulfonic acid. One is to co-heat chlorobenzene with fuming sulfuric acid. In this reaction, chlorobenzene is used as the substrate, and fuming sulfuric acid contains a large amount of free sulfur trioxide, which is very active. When the two are co-heated at a suitable temperature, usually around hundreds of degrees Celsius, the sulfate replaces the hydrogen of the chlorine atom para-position on the benzene ring, and then the p-chlorobenzenesulfonic acid is obtained.
The second can be prepared by p-chloroaniline through diazotization and Sandmeier reaction. First, the p-chloroaniline is reacted with sodium nitrite in a low temperature and acidic environment to obtain diazonium salts. Subsequently, the diazonium salt interacts with the cuprous salt and other reagents, and the diazonium group is replaced by the sulfonic acid group. This process goes through several steps of reaction, and the conditions need to be precisely controlled to obtain a relatively pure p-chlorobenzenesulfonic acid.
Furthermore, p-chlorobenzenesulfonic acid can also be obtained by using p-chlorobenzoic acid as raw material and treating with special reagents and reaction conditions. For example, select a suitable reducing agent and sulfonating reagent, adjust the reaction temperature, time and ratio of the reactants, promote the conversion of benzoic acid groups into sulfonic acid groups, and retain chlorine atoms in the benzene ring para-position.
All preparation methods have their own advantages and disadvantages, and it is necessary to choose the appropriate one according to the actual needs, raw material availability and
What are the precautions for P-Chlorobenzenesulfonic Acid in storage and transportation?
P-chlorobenzenesulfonic acid is highly acidic and corrosive. When storing and transporting, many matters must be paid attention to.
When storing, choose the first heavy container. Corrosion-resistant materials, such as special plastics or containers made of specific metals, should be used to prevent material leakage due to corrosion of the container. And it must be placed in a cool, dry and well-ventilated place, away from fires and heat sources. Because it is easy to decompose when heated, or it may cause danger. It should not be mixed with alkalis, oxidizers, etc., to prevent violent chemical reactions.
When transporting, the vehicle must ensure that the vehicle is in good condition and the protective facilities are complete. Transportation personnel must be professionally trained and familiar with material characteristics and emergency treatment methods. During transportation, be sure to prevent exposure to the sun, rain, and high temperature. The loading and unloading process also needs to be handled with caution, and light handling should be used to avoid damage to the container. In case of accidental leakage, immediately isolate the leaked contaminated area and restrict personnel from entering and leaving. Emergency personnel must wear protective clothing and gas masks, and do not let the leaks come into contact with combustible substances. According to the amount of leakage, appropriate methods should be used to collect and clean it up, or rinse it with a lot of water, dilute it and introduce it into the wastewater treatment system.
In short, the storage and transportation of P-chlorobenzenesulfonic acid is related to safety. All details should not be ignored. It must be carried out in accordance with regulations to ensure safety.