Linshang Chemical
PRODUCTS
M-Chloroethylbenzene
Linshang Chemical
|
HS Code |
869432 |
| Chemical Formula | C8H9Cl |
| Molar Mass | 140.61 g/mol |
| Appearance | Colorless to light - yellow liquid |
| Odor | Aromatic odor |
| Density | 1.072 g/cm³ at 20°C |
| Boiling Point | 179 - 181°C |
| Melting Point | -48°C |
| Solubility In Water | Insoluble |
| Solubility In Organic Solvents | Soluble in many organic solvents like ethanol, ether |
| Flash Point | 65°C |
| Vapor Pressure | 0.53 kPa at 25°C |
As an accredited M-Chloroethylbenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 500 - gram bottle of M - chloroethylbenzene, tightly sealed for chemical storage. |
| Storage | M - chloroethylbenzene should be stored in a cool, well - ventilated area, away from sources of ignition and heat. It should be in a tightly - sealed container, preferably made of corrosion - resistant materials like steel or certain plastics. Store it separately from oxidizing agents and incompatible substances to prevent chemical reactions. Keep it in a dedicated storage space with proper labeling for easy identification. |
| Shipping | M - chloroethylbenzene is shipped in tightly - sealed, corrosion - resistant containers, often made of stainless steel or specialized polymers. It is transported by road or rail under hazardous material regulations to ensure safe delivery. |
Competitive M-Chloroethylbenzene prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365006308 or mail to info@alchemist-chem.com.
We will respond to you as soon as possible.
Tel: +8615365006308
Email: info@alchemist-chem.com
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As a leading M-Chloroethylbenzene supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What are the physical properties of M-chloroethylbenzene?
M-chloroethylbenzene is also an organic compound. Its physical properties are particularly important, let me come one by one.
Looking at its properties, under room temperature and pressure, M-chloroethylbenzene is a colorless to light yellow transparent liquid, just like a clear jade liquid, shimmering. Its smell is unique and has a fragrant smell. Although fragrant, it cannot be smelled close to prevent health damage.
When it comes to the melting point, the melting point is quite low, about -43 ° C, just like cold water in winter, and it is easy to melt. The boiling point is relatively high, between 179 and 180 ° C, and it needs to be quite hot to turn it into a gas state.
In terms of density, M-chloroethylbenzene is slightly heavier than water, about 1.08g/cm ³. If it is placed in one place with water, it will sink to the bottom like a stone and settle slowly.
Solubility is also an important physical property. This substance is insoluble in water, just like the incompatibility of oil and water. When the two are mixed, they will naturally stratify. However, it has good solubility in organic solvents such as ethanol, ether, benzene, etc., and can be mixed with it, just like water emulsion.
In terms of volatility, M-chloroethylbenzene is volatile to a certain extent and can be slowly emitted in the air, like a floral fragrance, but this "fragrance" needs to be treated with caution, because its volatile steam may be harmful to the human body.
The physical properties of M-chloroethylbenzene are of great significance in many fields such as chemical industry and scientific research. Everyone needs to be aware of it in detail in order to make good use of it and avoid its harm.
Looking at its properties, under room temperature and pressure, M-chloroethylbenzene is a colorless to light yellow transparent liquid, just like a clear jade liquid, shimmering. Its smell is unique and has a fragrant smell. Although fragrant, it cannot be smelled close to prevent health damage.
When it comes to the melting point, the melting point is quite low, about -43 ° C, just like cold water in winter, and it is easy to melt. The boiling point is relatively high, between 179 and 180 ° C, and it needs to be quite hot to turn it into a gas state.
In terms of density, M-chloroethylbenzene is slightly heavier than water, about 1.08g/cm ³. If it is placed in one place with water, it will sink to the bottom like a stone and settle slowly.
Solubility is also an important physical property. This substance is insoluble in water, just like the incompatibility of oil and water. When the two are mixed, they will naturally stratify. However, it has good solubility in organic solvents such as ethanol, ether, benzene, etc., and can be mixed with it, just like water emulsion.
In terms of volatility, M-chloroethylbenzene is volatile to a certain extent and can be slowly emitted in the air, like a floral fragrance, but this "fragrance" needs to be treated with caution, because its volatile steam may be harmful to the human body.
The physical properties of M-chloroethylbenzene are of great significance in many fields such as chemical industry and scientific research. Everyone needs to be aware of it in detail in order to make good use of it and avoid its harm.
What are the chemical properties of M-chloroethylbenzene?
M-chloroethylbenzene is also an organic compound. Its properties have unique properties and are related to chemical properties, which are quite noteworthy.
The first talk about the properties of halogenated hydrocarbons. The chlorine atom is in the interposition of the benzene ring, so that the substance has the general reaction of halogenated hydrocarbons. In case of nucleophilic reagents, chlorine atoms are easily replaced. In case of potassium hydroxide in an alcohol solution, an elimination reaction can occur to remove hydrogen chloride and obtain alkenes. This is because the carbon ortho-position connected to the chlorine atom has a hydrogen atom, which satisfies the conditions for elimination.
And on the properties of its benzene ring. The benzene ring has a conjugated system and is electron-rich, Due to the fact that both chlorine and ethyl are ortho-para-localizers, although the meta-site activity is slightly weaker, under appropriate conditions, electrophilic reagents can also attack the meta-site. In case of mixed acids (sulfuric acid and nitric acid), nitrification can occur, and nitro groups are introduced into the meta-site of the benzene ring.
Furthermore, because ethyl is attached to the benzene ring and is affected by the benzene ring, ethyl α-hydrogen is active. In case of light or high temperature, it can undergo α-hydrogen substitution reaction with halogen elementals. This is because the benzene ring conjugate system has an effect on the distribution of ethyl electron clouds, making the α-hydrocarbon bond easy to break.
Its physical properties cannot be ignored. At room temperature, it is mostly liquid, insoluble in water, and has Due to the structure of halogenated hydrocarbons, the intermolecular forces are different from hydrocarbons, and the melting boiling point is unique.
From this perspective, M-chloroethylbenzene, with its special structure, has both the chemical properties related to halogenated hydrocarbons and benzene rings, and can be used as an important raw material in organic synthesis and other fields to produce various organic compounds.
The first talk about the properties of halogenated hydrocarbons. The chlorine atom is in the interposition of the benzene ring, so that the substance has the general reaction of halogenated hydrocarbons. In case of nucleophilic reagents, chlorine atoms are easily replaced. In case of potassium hydroxide in an alcohol solution, an elimination reaction can occur to remove hydrogen chloride and obtain alkenes. This is because the carbon ortho-position connected to the chlorine atom has a hydrogen atom, which satisfies the conditions for elimination.
And on the properties of its benzene ring. The benzene ring has a conjugated system and is electron-rich, Due to the fact that both chlorine and ethyl are ortho-para-localizers, although the meta-site activity is slightly weaker, under appropriate conditions, electrophilic reagents can also attack the meta-site. In case of mixed acids (sulfuric acid and nitric acid), nitrification can occur, and nitro groups are introduced into the meta-site of the benzene ring.
Furthermore, because ethyl is attached to the benzene ring and is affected by the benzene ring, ethyl α-hydrogen is active. In case of light or high temperature, it can undergo α-hydrogen substitution reaction with halogen elementals. This is because the benzene ring conjugate system has an effect on the distribution of ethyl electron clouds, making the α-hydrocarbon bond easy to break.
Its physical properties cannot be ignored. At room temperature, it is mostly liquid, insoluble in water, and has Due to the structure of halogenated hydrocarbons, the intermolecular forces are different from hydrocarbons, and the melting boiling point is unique.
From this perspective, M-chloroethylbenzene, with its special structure, has both the chemical properties related to halogenated hydrocarbons and benzene rings, and can be used as an important raw material in organic synthesis and other fields to produce various organic compounds.
What are the main uses of M-chloroethylbenzene?
M-chloroethylbenzene (M-chloroethylbenzene) has a wide range of main uses. In the field of organic synthesis, this is a crucial intermediate. With its unique chemical structure, a wide variety of organic compounds can be derived through many chemical reactions.
In the field of drug synthesis, M-chloroethylbenzene can be used as a starting material to participate in the construction of molecular structures with specific pharmacological activities. For example, through substitution, addition and other reactions, new pharmaceutical ingredients can be carefully designed and prepared, providing key basic materials for pharmaceutical research and development.
In the field of materials science, it also plays an indispensable role. With the help of a series of chemical reactions, M-chloroethylbenzene can be converted into a polymer material monomer with excellent performance. After polymerization, polymer materials with specific functions, such as high strength, high temperature resistance, corrosion resistance, etc., are widely used in aerospace, automobile manufacturing, electronics and many other high-end fields.
In addition, in the fine chemical industry, M-chloroethylbenzene is often used to synthesize various fine chemicals, such as fragrances, dyes, surfactants, etc. These fine chemicals have important uses in daily life and industrial production. Fragrances can add a pleasant aroma to products. Dyes are used for dyeing fabrics, plastics, etc. Surfactants are widely used in detergents, cosmetics and other products. Overall, M-chloroethylbenzene plays an important role in the development of the chemical industry due to its key uses in many fields.
In the field of drug synthesis, M-chloroethylbenzene can be used as a starting material to participate in the construction of molecular structures with specific pharmacological activities. For example, through substitution, addition and other reactions, new pharmaceutical ingredients can be carefully designed and prepared, providing key basic materials for pharmaceutical research and development.
In the field of materials science, it also plays an indispensable role. With the help of a series of chemical reactions, M-chloroethylbenzene can be converted into a polymer material monomer with excellent performance. After polymerization, polymer materials with specific functions, such as high strength, high temperature resistance, corrosion resistance, etc., are widely used in aerospace, automobile manufacturing, electronics and many other high-end fields.
In addition, in the fine chemical industry, M-chloroethylbenzene is often used to synthesize various fine chemicals, such as fragrances, dyes, surfactants, etc. These fine chemicals have important uses in daily life and industrial production. Fragrances can add a pleasant aroma to products. Dyes are used for dyeing fabrics, plastics, etc. Surfactants are widely used in detergents, cosmetics and other products. Overall, M-chloroethylbenzene plays an important role in the development of the chemical industry due to its key uses in many fields.
What are the preparation methods of M-chloroethylbenzene?
The method of preparing M-chloroethylbenzene has about two ends. The first is the alkylation of benzene with chloroethane. This reaction requires anhydrous aluminum trichloride as a catalyst. At an appropriate temperature, benzene interacts with chloroethane, and the hydrogen on the benzene ring is replaced by ethyl to produce ethylbenzene. Then chlorine gas is used as a halogenating agent. Under the condition of light or initiator, the hydrogen on the ethyl group of the side chain of ethylbenzene is replaced by chlorine to obtain M-chloroethylbenzene. However, there are many side reactions and the product is impure. Due to the halogenation of the side chain, various products such as monochloro and dichloro may be formed, which are difficult to separate and purify.
The second is to use styrene as a raw material. First, styrene and hydrogen chloride are added. The addition reaction follows the Markov rule. Hydrogen is added to the double-bonded carbon with more hydrogen, and chlorine is added to the double-bonded carbon with less hydrogen to obtain chloroethylbenzene. This reaction condition is relatively mild, with good selectivity and high product purity. After fractionation, M-chloroethylbenzene can be separated. However, it should be noted that factors such as the source or cost of styrene and the safety of hydrogen chloride should also be considered in the actual preparation.
The second is to use styrene as a raw material. First, styrene and hydrogen chloride are added. The addition reaction follows the Markov rule. Hydrogen is added to the double-bonded carbon with more hydrogen, and chlorine is added to the double-bonded carbon with less hydrogen to obtain chloroethylbenzene. This reaction condition is relatively mild, with good selectivity and high product purity. After fractionation, M-chloroethylbenzene can be separated. However, it should be noted that factors such as the source or cost of styrene and the safety of hydrogen chloride should also be considered in the actual preparation.
M-chloroethylbenzene What are the precautions during storage and transportation?
M-chloroethylbenzene is an organic compound. When storing and transporting, many matters need to be taken into account.
First word storage. This substance should be placed in a cool and ventilated warehouse. Because of its flammability, it can cause combustion in case of open flames and hot topics, so the temperature of the warehouse should not be too high, and it should be controlled in a specific range to prevent accidents. And it should be stored separately from oxidants and edible chemicals to avoid danger caused by their interaction. The storage area should be equipped with suitable materials to contain leaks, in case of leakage, it can be dealt with in time.
As for transportation. The transportation vehicle must ensure that the vehicle is in good condition and equipped with corresponding fire equipment and leakage emergency treatment equipment. During transportation, it should be protected from exposure to the sun, rain, and high temperature. When loading and unloading, the operation must be light and light to prevent damage to packaging and containers and material leakage. The exhaust pipe of the vehicle transporting the item must be equipped with a fire retardant device, and it is forbidden to use mechanical equipment and tools that are prone to sparks for loading and unloading. The driving route should also be paid attention to, and it should be avoided in residential areas and densely populated places.
All these are the things that should be paid attention to when storing and transporting M-chloroethylbenzene, so as to ensure the safety of the process.
First word storage. This substance should be placed in a cool and ventilated warehouse. Because of its flammability, it can cause combustion in case of open flames and hot topics, so the temperature of the warehouse should not be too high, and it should be controlled in a specific range to prevent accidents. And it should be stored separately from oxidants and edible chemicals to avoid danger caused by their interaction. The storage area should be equipped with suitable materials to contain leaks, in case of leakage, it can be dealt with in time.
As for transportation. The transportation vehicle must ensure that the vehicle is in good condition and equipped with corresponding fire equipment and leakage emergency treatment equipment. During transportation, it should be protected from exposure to the sun, rain, and high temperature. When loading and unloading, the operation must be light and light to prevent damage to packaging and containers and material leakage. The exhaust pipe of the vehicle transporting the item must be equipped with a fire retardant device, and it is forbidden to use mechanical equipment and tools that are prone to sparks for loading and unloading. The driving route should also be paid attention to, and it should be avoided in residential areas and densely populated places.
All these are the things that should be paid attention to when storing and transporting M-chloroethylbenzene, so as to ensure the safety of the process.
What are the main uses of M-chloroethylbenzene?
M-chloroethylbenzene is one of the organic compounds and has important uses in many fields.
First, in the field of organic synthesis, this is a key intermediate. Through various chemical reactions, such as nucleophilic substitution, the chlorine atom can be replaced by other functional groups, thus constructing more complex and diverse organic compounds. For example, by reacting with alkoxides, corresponding ether compounds can be formed; by reacting with amines, nitrogen-containing organic compounds can be prepared. These reaction products are widely used in the synthesis of fine chemicals such as drugs, pesticides, and fragrances.
Second, in the field of materials science, M-chloroethylbenzene can participate in the polymerization reaction to synthesize polymer materials with specific properties. By rationally designing and regulating the conditions of the polymerization reaction, polymers with different structures and properties can be obtained, such as improving the heat resistance and mechanical properties of materials, etc., thereby meeting the special needs of different engineering fields for material properties.
Third, in the pharmaceutical industry, M-chloroethylbenzene can be used as a starting material to prepare a variety of drugs through a series of chemical reactions. Due to its unique molecular structure, it can be used as an important module for the construction of active ingredients of drugs, providing rich possibilities for the development of new drugs.
Fourth, in the pesticide manufacturing industry, some compounds derived from M-chloroethylbenzene have good insecticidal, bactericidal or herbicidal activities, and can be used to develop high-efficiency and low-toxicity pesticide products, which can help agricultural production to increase yield and prevent pests and diseases.
In short, M-chloroethylbenzene plays an important role in the development process of the chemical industry and related industries due to its wide use in organic synthesis, materials science, medicine and pesticides.
First, in the field of organic synthesis, this is a key intermediate. Through various chemical reactions, such as nucleophilic substitution, the chlorine atom can be replaced by other functional groups, thus constructing more complex and diverse organic compounds. For example, by reacting with alkoxides, corresponding ether compounds can be formed; by reacting with amines, nitrogen-containing organic compounds can be prepared. These reaction products are widely used in the synthesis of fine chemicals such as drugs, pesticides, and fragrances.
Second, in the field of materials science, M-chloroethylbenzene can participate in the polymerization reaction to synthesize polymer materials with specific properties. By rationally designing and regulating the conditions of the polymerization reaction, polymers with different structures and properties can be obtained, such as improving the heat resistance and mechanical properties of materials, etc., thereby meeting the special needs of different engineering fields for material properties.
Third, in the pharmaceutical industry, M-chloroethylbenzene can be used as a starting material to prepare a variety of drugs through a series of chemical reactions. Due to its unique molecular structure, it can be used as an important module for the construction of active ingredients of drugs, providing rich possibilities for the development of new drugs.
Fourth, in the pesticide manufacturing industry, some compounds derived from M-chloroethylbenzene have good insecticidal, bactericidal or herbicidal activities, and can be used to develop high-efficiency and low-toxicity pesticide products, which can help agricultural production to increase yield and prevent pests and diseases.
In short, M-chloroethylbenzene plays an important role in the development process of the chemical industry and related industries due to its wide use in organic synthesis, materials science, medicine and pesticides.
What are the physical properties of M-chloroethylbenzene?
M-chloroethylbenzene is one of the organic compounds. It has unique physical properties, which are described in detail by you.
First properties, under room temperature and pressure, M-chloroethylbenzene is a colorless to light yellow transparent liquid. It is quite fluid when viewed, and its clear and impurity-free state can be observed.
The boiling point of M-chloroethylbenzene is between 188-192 ° C. At this temperature, M-chloroethylbenzene gradually changes from liquid to gaseous state. This property is very critical in the separation and purification operations such as distillation. It can be separated from other substances according to the difference in its boiling point.
Furthermore, its melting point is about -32 ° C. When the ambient temperature drops below this point, M-chloroethylbenzene will solidify from liquid to solid. This temperature limit is also an important characterization of its physical properties.
As for the density, it is about 1.07 g/cm ³, which is slightly heavier than water. If M-chloroethylbenzene is mixed with water, it will sink to the bottom of the water. This density characteristic is of great significance in practical application scenarios such as liquid-liquid separation.
The solubility of M-chloroethylbenzene also has characteristics. It is insoluble in water, but it can be well miscible with many organic solvents such as ethanol, ether, benzene, etc. This solubility makes it possible to choose a suitable organic solvent to dissolve M-chloroethylbenzene in organic synthesis and other fields, and then carry out various chemical reactions.
In addition, M-chloroethylbenzene is volatile and can slowly evaporate into the air in an open environment. Its vapor is heavier than air and can diffuse along the ground. This characteristic needs to be paid attention to during storage and use to avoid potential safety hazards caused by vapor accumulation.
First properties, under room temperature and pressure, M-chloroethylbenzene is a colorless to light yellow transparent liquid. It is quite fluid when viewed, and its clear and impurity-free state can be observed.
The boiling point of M-chloroethylbenzene is between 188-192 ° C. At this temperature, M-chloroethylbenzene gradually changes from liquid to gaseous state. This property is very critical in the separation and purification operations such as distillation. It can be separated from other substances according to the difference in its boiling point.
Furthermore, its melting point is about -32 ° C. When the ambient temperature drops below this point, M-chloroethylbenzene will solidify from liquid to solid. This temperature limit is also an important characterization of its physical properties.
As for the density, it is about 1.07 g/cm ³, which is slightly heavier than water. If M-chloroethylbenzene is mixed with water, it will sink to the bottom of the water. This density characteristic is of great significance in practical application scenarios such as liquid-liquid separation.
The solubility of M-chloroethylbenzene also has characteristics. It is insoluble in water, but it can be well miscible with many organic solvents such as ethanol, ether, benzene, etc. This solubility makes it possible to choose a suitable organic solvent to dissolve M-chloroethylbenzene in organic synthesis and other fields, and then carry out various chemical reactions.
In addition, M-chloroethylbenzene is volatile and can slowly evaporate into the air in an open environment. Its vapor is heavier than air and can diffuse along the ground. This characteristic needs to be paid attention to during storage and use to avoid potential safety hazards caused by vapor accumulation.
What are the chemical properties of M-chloroethylbenzene?
M-chloroethylbenzene is also an organic compound. Its chemical properties are of great interest and are described below.
First, the benzene ring has a conjugate system, which makes the compound stable. However, the presence of its side chain and chlorine atom confers other reactivity.
For electrophilic substitution, the electron cloud density of the benzene ring changes due to the electron-absorbing induction effect of chlorine and the conjugation effect of the electron conductor. The electron cloud density of the adjacent and para-site of chlorine is relatively high, so the electrophilic reagents tend to attack these two positions.
The hydrogen atom on the ethyl group of the side chain can be replaced under specific conditions. For example, under light or high temperature, chlorine radicals can grab hydrogen on the ethyl group and initiate radical substitution reactions.
Furthermore, its chlorine atoms can participate in nucleophilic substitution reactions. In case of nucleophilic reagents, such as hydroxide ions, sodium alcohols, etc., chlorine atoms can be replaced to form corresponding alcohols or ether compounds.
In addition, M-chloroethylbenzene can be partially hydrogenated to form hydrogenation products under reduced conditions. In oxidation conditions, side chain ethyl groups may be oxidized to obtain products in different oxidation states.
All these are important chemical properties of M-chloroethylbenzene, which are widely used in organic synthesis and chemical industry.
First, the benzene ring has a conjugate system, which makes the compound stable. However, the presence of its side chain and chlorine atom confers other reactivity.
For electrophilic substitution, the electron cloud density of the benzene ring changes due to the electron-absorbing induction effect of chlorine and the conjugation effect of the electron conductor. The electron cloud density of the adjacent and para-site of chlorine is relatively high, so the electrophilic reagents tend to attack these two positions.
The hydrogen atom on the ethyl group of the side chain can be replaced under specific conditions. For example, under light or high temperature, chlorine radicals can grab hydrogen on the ethyl group and initiate radical substitution reactions.
Furthermore, its chlorine atoms can participate in nucleophilic substitution reactions. In case of nucleophilic reagents, such as hydroxide ions, sodium alcohols, etc., chlorine atoms can be replaced to form corresponding alcohols or ether compounds.
In addition, M-chloroethylbenzene can be partially hydrogenated to form hydrogenation products under reduced conditions. In oxidation conditions, side chain ethyl groups may be oxidized to obtain products in different oxidation states.
All these are important chemical properties of M-chloroethylbenzene, which are widely used in organic synthesis and chemical industry.
What are M-chloroethylbenzene synthesis methods?
M-chloroethylbenzene is also an organic compound. The method of its synthesis has various paths, which are described in detail below.
First, benzene and ethyl chloride are used as raw materials and can be prepared by Fu-gram alkylation reaction. In the reaction system, Lewis acid such as anhydrous aluminum trichloride is added as a catalyst. The mechanism of this reaction is that ethyl chloride is acted by a catalyst to generate carbon positive ions, and then the carbon positive ions attack the benzene ring, and an electrophilic substitution reaction occurs to obtain ethylbenzene. However, this reaction will have three position isomers, o, m, and p. To obtain meta-products, the reaction conditions need to be controlled or purified by subsequent separation means.
Second, ethylbenzene can be prepared from benzene first, and then prepared by chlorination reaction. Ethylbenzene reacts with chlorine in the presence of light or free radical initiator, and the hydrogen atom on the ethyl group can be replaced by chlorine atoms. However, the selectivity of this reaction is not good. In addition to generating the target product M-chloroethylbenzene, there will also be other position-substituted products, such as α-chloroethylbenzene. In order to improve the yield of M-chloroethylbenzene, the reaction conditions can be optimized, such as adjusting the ratio of reactants, controlling the reaction temperature and time, etc.
Third, M-chloroethylbenzene can be prepared by hydroreduction reaction with isochlorophenylvinyl as raw material. Commonly used hydrogenation catalysts include palladium carbon, Raney nickel, etc. This method is relatively direct and the product purity is high. However, the acquisition of chlorostyrene raw materials may require other steps to synthesize, and the cost may be affected.
The above methods have advantages and disadvantages. In the actual synthesis, it is necessary to comprehensively consider the availability of raw materials, cost, product purity requirements and other factors to choose the appropriate method.
First, benzene and ethyl chloride are used as raw materials and can be prepared by Fu-gram alkylation reaction. In the reaction system, Lewis acid such as anhydrous aluminum trichloride is added as a catalyst. The mechanism of this reaction is that ethyl chloride is acted by a catalyst to generate carbon positive ions, and then the carbon positive ions attack the benzene ring, and an electrophilic substitution reaction occurs to obtain ethylbenzene. However, this reaction will have three position isomers, o, m, and p. To obtain meta-products, the reaction conditions need to be controlled or purified by subsequent separation means.
Second, ethylbenzene can be prepared from benzene first, and then prepared by chlorination reaction. Ethylbenzene reacts with chlorine in the presence of light or free radical initiator, and the hydrogen atom on the ethyl group can be replaced by chlorine atoms. However, the selectivity of this reaction is not good. In addition to generating the target product M-chloroethylbenzene, there will also be other position-substituted products, such as α-chloroethylbenzene. In order to improve the yield of M-chloroethylbenzene, the reaction conditions can be optimized, such as adjusting the ratio of reactants, controlling the reaction temperature and time, etc.
Third, M-chloroethylbenzene can be prepared by hydroreduction reaction with isochlorophenylvinyl as raw material. Commonly used hydrogenation catalysts include palladium carbon, Raney nickel, etc. This method is relatively direct and the product purity is high. However, the acquisition of chlorostyrene raw materials may require other steps to synthesize, and the cost may be affected.
The above methods have advantages and disadvantages. In the actual synthesis, it is necessary to comprehensively consider the availability of raw materials, cost, product purity requirements and other factors to choose the appropriate method.
M-chloroethylbenzene What are the precautions during storage and transportation?
When storing and transporting M-chloroethylbenzene, pay attention to many matters. This substance is flammable and easily decomposes when heated to produce toxic chloride fumes. Therefore, when storing, be sure to place it in a cool and ventilated warehouse, away from fires and heat sources. The storage temperature should not exceed 37 ° C, keep the container sealed. It should be stored separately from oxidants, acids and alkalis, and should not be mixed. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials.
When transporting, it is necessary to abide by the relevant regulations on the transportation of dangerous chemicals. The transportation vehicle should be equipped with the corresponding variety and quantity of fire-fighting equipment and leakage emergency treatment equipment. It is best to transport in the morning and evening in summer. The tank (tank) car used during transportation should have a grounding chain, and holes can be set in the tank to reduce shock and generate static electricity. It is strictly forbidden to mix and transport with oxidants, acids, alkalis, edible chemicals, etc. During transportation, it should be protected from exposure to the sun, rain, and high temperature. During stopovers, it should be kept away from fires, heat sources, and high temperature areas. Vehicle exhaust pipes must have fire retardant devices. It is forbidden to use spark-prone machinery and tools for loading and unloading. Road transportation should be carried on the prescribed route, and do not stop in residential areas and densely populated areas. It is forbidden to slip during railway transportation.
In this way, it is necessary to ensure the safety of M-chloroethylbenzene during storage and transportation, and avoid disasters.
When transporting, it is necessary to abide by the relevant regulations on the transportation of dangerous chemicals. The transportation vehicle should be equipped with the corresponding variety and quantity of fire-fighting equipment and leakage emergency treatment equipment. It is best to transport in the morning and evening in summer. The tank (tank) car used during transportation should have a grounding chain, and holes can be set in the tank to reduce shock and generate static electricity. It is strictly forbidden to mix and transport with oxidants, acids, alkalis, edible chemicals, etc. During transportation, it should be protected from exposure to the sun, rain, and high temperature. During stopovers, it should be kept away from fires, heat sources, and high temperature areas. Vehicle exhaust pipes must have fire retardant devices. It is forbidden to use spark-prone machinery and tools for loading and unloading. Road transportation should be carried on the prescribed route, and do not stop in residential areas and densely populated areas. It is forbidden to slip during railway transportation.
In this way, it is necessary to ensure the safety of M-chloroethylbenzene during storage and transportation, and avoid disasters.
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