Linshang Chemical
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Sym-Trichlorobenzene
Linshang Chemical
|
HS Code |
423049 |
| Chemical Formula | C6H3Cl3 |
| Molar Mass | 181.45 g/mol |
| Appearance | Colorless to white solid |
| Odor | Characteristic aromatic odor |
| Melting Point | 63 - 69 °C |
| Boiling Point | 218 - 221 °C |
| Density | 1.465 g/cm³ (solid) |
| Solubility In Water | Insoluble |
| Solubility In Organic Solvents | Soluble in benzene, ether, chloroform |
| Vapor Pressure | 0.133 mmHg (25 °C) |
| Flash Point | 110 °C |
| Logp | 4.08 |
As an accredited Sym-Trichlorobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sym - trichlorobenzene in 50 - kg drums for chemical packaging. |
| Storage | Sym - trichlorobenzene should be stored in a cool, dry, well - ventilated area, away from sources of ignition and heat. Keep it in tightly - sealed containers made of suitable materials like metal or certain plastics to prevent leakage. Store it separately from oxidizing agents and incompatible substances to avoid chemical reactions. |
| Shipping | Sym - trichlorobenzene is shipped in tightly - sealed, corrosion - resistant containers. These are typically stored in well - ventilated areas during transit, following strict regulations to prevent spills and ensure safe transportation due to its chemical nature. |
Competitive Sym-Trichlorobenzene 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 trusted Sym-Trichlorobenzene manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
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Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Sym-Trichlorobenzene 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 main uses of Sym-trichlorobenzene?
Sym-trichlorobenzene is known as dichlorobenzene. Its main uses are as follows:
dichlorobenzene is often used in organic synthesis. In the dye industry, it can be used as a key intermediate to assist in the preparation of dyes. Due to its unique chemical structure, it can participate in a variety of chemical reactions. After ingenious design and operation, the specific structure required by the dye molecule is constructed, which in turn gives the dye excellent color and stability.
In the field of pesticides, dichlorobenzene also plays an important role. It can be used to synthesize a variety of pesticide ingredients and provide a powerful tool for agricultural pest control. By reacting with other chemicals, compounds with insecticidal and bactericidal effects can be generated, which can effectively protect crops from pest infestation and ensure food yield and quality.
Furthermore, in the pharmaceutical industry, dichlorobenzene can be used as a starting material or intermediate to participate in drug synthesis. Its chemical properties enable it to be introduced into the molecular structure of drugs, laying the foundation for the development of new drugs. With its unique chemical activity, it helps to construct the active site of drugs, thus endowing drugs with specific pharmacological activities and playing a positive role in human health.
In addition, dichlorobenzene is also used in the field of solvents. Its good solubility allows it to dissolve a variety of organic substances. In some chemical reactions or industrial production processes, it acts as a solvent to provide a suitable environment for the reaction, ensuring the smooth progress of the reaction and improving the reaction efficiency and product purity.
dichlorobenzene is often used in organic synthesis. In the dye industry, it can be used as a key intermediate to assist in the preparation of dyes. Due to its unique chemical structure, it can participate in a variety of chemical reactions. After ingenious design and operation, the specific structure required by the dye molecule is constructed, which in turn gives the dye excellent color and stability.
In the field of pesticides, dichlorobenzene also plays an important role. It can be used to synthesize a variety of pesticide ingredients and provide a powerful tool for agricultural pest control. By reacting with other chemicals, compounds with insecticidal and bactericidal effects can be generated, which can effectively protect crops from pest infestation and ensure food yield and quality.
Furthermore, in the pharmaceutical industry, dichlorobenzene can be used as a starting material or intermediate to participate in drug synthesis. Its chemical properties enable it to be introduced into the molecular structure of drugs, laying the foundation for the development of new drugs. With its unique chemical activity, it helps to construct the active site of drugs, thus endowing drugs with specific pharmacological activities and playing a positive role in human health.
In addition, dichlorobenzene is also used in the field of solvents. Its good solubility allows it to dissolve a variety of organic substances. In some chemical reactions or industrial production processes, it acts as a solvent to provide a suitable environment for the reaction, ensuring the smooth progress of the reaction and improving the reaction efficiency and product purity.
What are the physical properties of Sym-trichlorobenzene?
Sym-trichlorobenzene, or homotrichlorobenzene, is an organic compound. It has the following physical properties:
Viewed at room temperature, it is a colorless needle-like crystal, like a fine needle arrangement, uniform texture, with a certain luster. Smell it, a slight smell, although not pungent, but sensitive people can also detect it.
In terms of its melting point, it is about 63 ° C. When the ambient temperature reaches this value, homotrichlorobenzene gradually melts from a solid state to a liquid state, like ice and snow melting in the warm sun. The boiling point is 213 ° C. At this high temperature, the liquid boils and escapes into a gaseous state.
The density of homotrichlorobenzene is slightly higher than that of water, about 1.46g/cm ³. If it is placed in one place with water, it will sink underwater, like a stone falling into water. It is insoluble in water, just like oil and water, but it is easily soluble in most organic solvents, such as benzene, ethanol, ether, etc., which can be uniformly dispersed, just like salt dissolves in water.
In addition, dichlorobenzene has sublimation properties. Under specific conditions, it is directly converted from solid to gaseous without liquid state, such as the sublimation of dry ice, which quietly changes its shape. These physical properties provide an important basis for separation, purification and control of reaction conditions when applied in chemical, pharmaceutical and other fields.
Viewed at room temperature, it is a colorless needle-like crystal, like a fine needle arrangement, uniform texture, with a certain luster. Smell it, a slight smell, although not pungent, but sensitive people can also detect it.
In terms of its melting point, it is about 63 ° C. When the ambient temperature reaches this value, homotrichlorobenzene gradually melts from a solid state to a liquid state, like ice and snow melting in the warm sun. The boiling point is 213 ° C. At this high temperature, the liquid boils and escapes into a gaseous state.
The density of homotrichlorobenzene is slightly higher than that of water, about 1.46g/cm ³. If it is placed in one place with water, it will sink underwater, like a stone falling into water. It is insoluble in water, just like oil and water, but it is easily soluble in most organic solvents, such as benzene, ethanol, ether, etc., which can be uniformly dispersed, just like salt dissolves in water.
In addition, dichlorobenzene has sublimation properties. Under specific conditions, it is directly converted from solid to gaseous without liquid state, such as the sublimation of dry ice, which quietly changes its shape. These physical properties provide an important basis for separation, purification and control of reaction conditions when applied in chemical, pharmaceutical and other fields.
What is the chemistry of Sym-trichlorobenzene?
Sym - trichlorobenzene is trichlorobenzene. Its chemical properties are as follows:
trichlorobenzene is stable, a white needle-like crystal with a unique odor. At room temperature and pressure, it is in a solid state, with a melting point of about 63 ° C and a boiling point of about 213 ° C.
Its chemical stability is derived from the conjugated system of the benzene ring, which makes it difficult to react with general reagents. However, under specific conditions, it can also exhibit some typical reaction characteristics.
From the perspective of electrophilic substitution, since the chlorine atom is an electron-withdrawing group, the electron cloud density of the benzene ring will decrease, and the electrophilic substitution reaction activity will decrease compared with benzene. However, because the three chlorine atoms are in symmetrical positions, the electron cloud distribution on the benzene ring In the presence of suitable catalysts such as iron filings or ferric chloride, it can be substituted with electrophilic reagents such as bromine to form corresponding brominated products.
Under high temperature and high pressure and specific catalyst conditions, hydrolysis can occur, and chlorine atoms are gradually replaced by hydroxyl groups to form corresponding phenolic compounds. However, the reaction conditions are more harsh, and the reaction temperature, pressure and proportion of reactants need to be strictly controlled.
Homotrichlorobenzene is an important intermediate in organic synthesis. Due to its special structure, it can be used to construct a variety of complex organic compounds and is widely used in pesticides, medicine, dyes and other fields. It also has a certain solubility, slightly soluble in water, easily soluble in ethanol, ether, benzene and other organic solvents, which is of great significance for separation and purification operations in its synthesis and application.
trichlorobenzene is stable, a white needle-like crystal with a unique odor. At room temperature and pressure, it is in a solid state, with a melting point of about 63 ° C and a boiling point of about 213 ° C.
Its chemical stability is derived from the conjugated system of the benzene ring, which makes it difficult to react with general reagents. However, under specific conditions, it can also exhibit some typical reaction characteristics.
From the perspective of electrophilic substitution, since the chlorine atom is an electron-withdrawing group, the electron cloud density of the benzene ring will decrease, and the electrophilic substitution reaction activity will decrease compared with benzene. However, because the three chlorine atoms are in symmetrical positions, the electron cloud distribution on the benzene ring In the presence of suitable catalysts such as iron filings or ferric chloride, it can be substituted with electrophilic reagents such as bromine to form corresponding brominated products.
Under high temperature and high pressure and specific catalyst conditions, hydrolysis can occur, and chlorine atoms are gradually replaced by hydroxyl groups to form corresponding phenolic compounds. However, the reaction conditions are more harsh, and the reaction temperature, pressure and proportion of reactants need to be strictly controlled.
Homotrichlorobenzene is an important intermediate in organic synthesis. Due to its special structure, it can be used to construct a variety of complex organic compounds and is widely used in pesticides, medicine, dyes and other fields. It also has a certain solubility, slightly soluble in water, easily soluble in ethanol, ether, benzene and other organic solvents, which is of great significance for separation and purification operations in its synthesis and application.
What are Sym-trichlorobenzene production methods?
The preparation method of Sym-trichlorobenzene (trichlorobenzene) has been known for a long time. One method is to take benzene as the starting material, add chlorine and catalyst, and prepare it by chlorination reaction. In this reaction, under appropriate temperature and pressure, chlorine and benzene meet the catalyst, and the chlorine atoms gradually replace the hydrogen atoms on the benzene ring to obtain trichlorobenzene. The catalyst used is usually iron filings or anhydrous iron trichloride, both of which can effectively promote the reaction.
There are also those who use hexachlorocyclohexane (hexachlorocyclohexane) as the raw material. After the high temperature dehydrochlorination reaction of hexachlorobenzene, trichlorobenzene can be obtained. This process needs to be temperature-appropriate, so that the hydrogen chloride in the hexachlorobenzene molecule is removed, and When
is prepared, the purity of the raw material, the temperature of the reaction, the pressure, the amount of catalyst and the reaction time are all key factors. If the raw material is pure, the product has few impurities; if the temperature is appropriate, the reaction speed and yield are good; if the pressure is appropriate, the reaction can be guaranteed to be smooth; if the catalyst is appropriate, it can be efficiently catalyzed; if the time is accurate, the reaction will be complete, and the product will not be impure due to overreaction. All factors are taken into account in order to obtain trichlorobenzene efficiently.
There are also those who use hexachlorocyclohexane (hexachlorocyclohexane) as the raw material. After the high temperature dehydrochlorination reaction of hexachlorobenzene, trichlorobenzene can be obtained. This process needs to be temperature-appropriate, so that the hydrogen chloride in the hexachlorobenzene molecule is removed, and When
is prepared, the purity of the raw material, the temperature of the reaction, the pressure, the amount of catalyst and the reaction time are all key factors. If the raw material is pure, the product has few impurities; if the temperature is appropriate, the reaction speed and yield are good; if the pressure is appropriate, the reaction can be guaranteed to be smooth; if the catalyst is appropriate, it can be efficiently catalyzed; if the time is accurate, the reaction will be complete, and the product will not be impure due to overreaction. All factors are taken into account in order to obtain trichlorobenzene efficiently.
Sym-trichlorobenzene what are the precautions during use
Sym - trichlorobenzene is also an organic compound. When using, many precautions must be paid attention to.
First, safety protection is of paramount importance. This substance is toxic to a certain extent, and exposure can cause health damage. Therefore, when operating, it is necessary to wear appropriate protective equipment, such as protective gloves, goggles, gas masks, etc., to prevent skin contact, inhalation and eye contamination.
Second, storage should also be cautious. It should be placed in a cool and well-ventilated place, away from fire and heat sources, and should be stored separately from oxidants, acids, and alkalis. Do not mix storage to avoid dangerous reactions.
Third, the use environment must be kept well ventilated. When used in poorly ventilated places, its volatile gas is easy to accumulate and increase the risk of poisoning. If conditions permit, it should be operated in a fume hood.
Fourth, the operation process should be standardized. When taking it, the action should be slow and stable to avoid spilling. If it is accidentally spilled, it should be cleaned up immediately in accordance with relevant procedures to prevent the spread of pollution to the environment.
Fifth, disposal should not be ignored. It should not be discarded at will. It should follow environmental protection requirements and be handed over to professional institutions to avoid pollution to the environment.
All of these are all things that should be paid attention to when using sym-trichlorobenzene. It must not be taken lightly to ensure safe and standardized operation, so as to ensure the safety of personnel and the environment is not damaged.
First, safety protection is of paramount importance. This substance is toxic to a certain extent, and exposure can cause health damage. Therefore, when operating, it is necessary to wear appropriate protective equipment, such as protective gloves, goggles, gas masks, etc., to prevent skin contact, inhalation and eye contamination.
Second, storage should also be cautious. It should be placed in a cool and well-ventilated place, away from fire and heat sources, and should be stored separately from oxidants, acids, and alkalis. Do not mix storage to avoid dangerous reactions.
Third, the use environment must be kept well ventilated. When used in poorly ventilated places, its volatile gas is easy to accumulate and increase the risk of poisoning. If conditions permit, it should be operated in a fume hood.
Fourth, the operation process should be standardized. When taking it, the action should be slow and stable to avoid spilling. If it is accidentally spilled, it should be cleaned up immediately in accordance with relevant procedures to prevent the spread of pollution to the environment.
Fifth, disposal should not be ignored. It should not be discarded at will. It should follow environmental protection requirements and be handed over to professional institutions to avoid pollution to the environment.
All of these are all things that should be paid attention to when using sym-trichlorobenzene. It must not be taken lightly to ensure safe and standardized operation, so as to ensure the safety of personnel and the environment is not damaged.
What are the main uses of Sym-trichlorobenzene?
Sym-trichlorobenzene is called homotrichlorobenzene. Its main uses are as follows:
Homotrichlorobenzene, which is widely used in the chemical industry. First, it can be used as a raw material for organic synthesis. With its stable benzene ring structure and suitable chlorine atom activity, it can participate in many chemical reactions and lay the foundation for the preparation of fine chemicals. For example, by using this as a starting material and substitution reaction, a variety of chlorine-containing organic compounds with specific structures can be prepared for the synthesis of drugs and pesticides.
Second, it is also useful in the dye industry. With its special chemical structure, it can participate in the synthesis of dye intermediates. Intermediates prepared from dichlorobenzene can impart unique color, stability and dyeing properties to dyes, improve the quality of dyes, and are widely used in textiles, printing and dyeing industries.
Third, in the field of solvents, it also has a place. Ditrichlorobenzene has good solubility, good solubility to many organic compounds, and stable chemical properties, suitable boiling point, so it can be used as a solvent for coatings, inks and other industries, helping to adjust product rheological properties and drying characteristics to ensure product quality.
Fourth, in the field of electronics industry, it can be used as a cleaning agent. Due to its strong solubility to oil and impurities, it can effectively remove contaminants on the surface of electronic components, ensure stable performance of electronic components, and improve the quality and reliability of electronic products.
Homotrichlorobenzene, which is widely used in the chemical industry. First, it can be used as a raw material for organic synthesis. With its stable benzene ring structure and suitable chlorine atom activity, it can participate in many chemical reactions and lay the foundation for the preparation of fine chemicals. For example, by using this as a starting material and substitution reaction, a variety of chlorine-containing organic compounds with specific structures can be prepared for the synthesis of drugs and pesticides.
Second, it is also useful in the dye industry. With its special chemical structure, it can participate in the synthesis of dye intermediates. Intermediates prepared from dichlorobenzene can impart unique color, stability and dyeing properties to dyes, improve the quality of dyes, and are widely used in textiles, printing and dyeing industries.
Third, in the field of solvents, it also has a place. Ditrichlorobenzene has good solubility, good solubility to many organic compounds, and stable chemical properties, suitable boiling point, so it can be used as a solvent for coatings, inks and other industries, helping to adjust product rheological properties and drying characteristics to ensure product quality.
Fourth, in the field of electronics industry, it can be used as a cleaning agent. Due to its strong solubility to oil and impurities, it can effectively remove contaminants on the surface of electronic components, ensure stable performance of electronic components, and improve the quality and reliability of electronic products.
What are the physical properties of Sym-trichlorobenzene?
Sym-trichlorobenzene is trichlorobenzene. Its physical properties are as follows:
trichlorobenzene is in a colorless needle-like or prismatic crystalline state, and it looks crystal clear. Its smell is unique, and it smells like chloroform. The melting point is quite high, reaching 63.5 ° C. At this temperature, the solid phase will gradually melt into the liquid phase. The boiling point is 218.5 ° C. At this temperature, the liquid will vaporize violently. The relative density (water = 1) is 1.465 (65/4 ° C), which is heavier than water. If placed in water, it will sink to the bottom of the water.
This substance is slightly soluble in water, just like it is rare to find it in the sea. However, it can be well dissolved in organic solvents such as ethanol, ether, benzene, and carbon tetrachloride, and it melts like a duck to water. Its vapor pressure has a certain value under specific conditions, and it can be slowly volatilized in the air and diffused around. The sublimation of trichlorobenzene should not be underestimated. In a suitable environment, it can be directly converted from a solid state to a gaseous state. Its molecular structure is stable, which makes it have a certain thermal stability and is not easy to decompose under normal heating conditions. And because of the existence of chlorine atoms, it is given a certain chemical inertness, and it is relatively stable in many common chemical reactions.
trichlorobenzene is in a colorless needle-like or prismatic crystalline state, and it looks crystal clear. Its smell is unique, and it smells like chloroform. The melting point is quite high, reaching 63.5 ° C. At this temperature, the solid phase will gradually melt into the liquid phase. The boiling point is 218.5 ° C. At this temperature, the liquid will vaporize violently. The relative density (water = 1) is 1.465 (65/4 ° C), which is heavier than water. If placed in water, it will sink to the bottom of the water.
This substance is slightly soluble in water, just like it is rare to find it in the sea. However, it can be well dissolved in organic solvents such as ethanol, ether, benzene, and carbon tetrachloride, and it melts like a duck to water. Its vapor pressure has a certain value under specific conditions, and it can be slowly volatilized in the air and diffused around. The sublimation of trichlorobenzene should not be underestimated. In a suitable environment, it can be directly converted from a solid state to a gaseous state. Its molecular structure is stable, which makes it have a certain thermal stability and is not easy to decompose under normal heating conditions. And because of the existence of chlorine atoms, it is given a certain chemical inertness, and it is relatively stable in many common chemical reactions.
What is the chemistry of Sym-trichlorobenzene?
Sym-trichlorobenzene, or homotrichlorobenzene, has unique chemical properties, so let me tell you one by one.
Homotrichlorobenzene is a white crystal with a special odor. Its structure is stable, and its chemical properties are very different from those of aliphatic compounds due to the existence of the conjugation system of the benzene ring.
In the electrophilic substitution reaction, the electron cloud density of the benzene ring has a significant effect. Although the chlorine atom has an electron-absorbing effect, the degree of reduction of the electron cloud density of the benzene ring due to the conjugation effect is limited, and such reactions can still occur. If under suitable catalysts and conditions, it can react with electrophilic reagents such as bromine and nitric acid to generate corresponding substitution products. This is because the benzene ring π electron cloud can be used as a nucleophil
Under specific conditions, homotrichlorobenzene can undergo nucleophilic substitution reaction. Chlorine atoms can be replaced by other nucleophilic reagents, such as co-heating with sodium hydroxide aqueous solution, chlorine atoms or substituted by hydroxyl groups, to form corresponding phenolic derivatives. This reaction requires suitable conditions such as temperature and pressure. Due to the partial double bond nature of carbon-chlorine bonds in chlorobenzene-type compounds, it is difficult to break.
Homotrichlorobenzene also has certain chemical stability. Under normal temperature and pressure, it is inert to many chemical reagents and does not react rapidly with common acid-base solutions. It requires specific conditions to initiate reactions. Its stability stems from the delocalization of electrons by the benzene ring conjugation system, which enhances molecular stability.
In terms of thermal stability, dichlorobenzene can remain stable within a certain temperature range. At high temperatures, decomposition reactions may occur to generate chlorine-containing small molecules and carbonaceous residues.
In the field of organic synthesis, dichlorobenzene has unique structures and chemical properties. It is often used as an intermediate to construct complex organic molecular structures through various reactions. It is an important raw material for organic synthesis chemistry.
Homotrichlorobenzene is a white crystal with a special odor. Its structure is stable, and its chemical properties are very different from those of aliphatic compounds due to the existence of the conjugation system of the benzene ring.
In the electrophilic substitution reaction, the electron cloud density of the benzene ring has a significant effect. Although the chlorine atom has an electron-absorbing effect, the degree of reduction of the electron cloud density of the benzene ring due to the conjugation effect is limited, and such reactions can still occur. If under suitable catalysts and conditions, it can react with electrophilic reagents such as bromine and nitric acid to generate corresponding substitution products. This is because the benzene ring π electron cloud can be used as a nucleophil
Under specific conditions, homotrichlorobenzene can undergo nucleophilic substitution reaction. Chlorine atoms can be replaced by other nucleophilic reagents, such as co-heating with sodium hydroxide aqueous solution, chlorine atoms or substituted by hydroxyl groups, to form corresponding phenolic derivatives. This reaction requires suitable conditions such as temperature and pressure. Due to the partial double bond nature of carbon-chlorine bonds in chlorobenzene-type compounds, it is difficult to break.
Homotrichlorobenzene also has certain chemical stability. Under normal temperature and pressure, it is inert to many chemical reagents and does not react rapidly with common acid-base solutions. It requires specific conditions to initiate reactions. Its stability stems from the delocalization of electrons by the benzene ring conjugation system, which enhances molecular stability.
In terms of thermal stability, dichlorobenzene can remain stable within a certain temperature range. At high temperatures, decomposition reactions may occur to generate chlorine-containing small molecules and carbonaceous residues.
In the field of organic synthesis, dichlorobenzene has unique structures and chemical properties. It is often used as an intermediate to construct complex organic molecular structures through various reactions. It is an important raw material for organic synthesis chemistry.
What are Sym-trichlorobenzene production methods?
Sym - trichlorobenzene (trichlorobenzene) is also an organic compound. Its preparation method used to follow the following methods in the past.
First, benzene is used as the starting material and can be obtained by chlorination. The benzene is placed in the reactor, chlorine is introduced, and under specific temperature, pressure and catalyst action, the chlorine atom gradually replaces the hydrogen atom on the benzene ring. However, in this process, monochlorobenzene, dichlorobenzene and other mixtures are initially obtained, and fine separation is required to obtain high-purity trichlorobenzene. The separation method is often fractionated to take advantage of the difference in the boiling point of each compound and fractionate it one by one to achieve the purpose of purification.
Second, hexachlorocyclohexane (hexachlorocyclohexane) is used as There are various isomers of hexachlorobenzene, some of which can be converted into trichlorobenzene under suitable conditions by catalytic dechlorination reaction. This reaction requires the selection of a specific catalyst and strict control of the reaction conditions, such as temperature, pH, etc., to improve the yield and purity.
Third, m-dichlorobenzene is used as the raw material. Under specific reagents and reaction conditions, m-dichlorobenzene can introduce a third chlorine atom to generate trichlorobenzene. This process requires precise regulation of the reaction conditions to ensure the selectivity of the reaction and reduce the occurrence of side reactions.
All preparation methods have their own advantages and disadvantages. With the method of benzene chlorination, the raw materials are easy to obtain, but the separation process is complicated; with 666 as the raw material, although the waste can be used, the catalyst selection and reaction conditions need to be paid attention to; with m-dichlorobenzene as the raw material, the control of reaction selectivity is the key. For the preparation of trichlorobenzene, the appropriate method should be carefully selected according to the actual needs, the availability of raw materials and costs.
First, benzene is used as the starting material and can be obtained by chlorination. The benzene is placed in the reactor, chlorine is introduced, and under specific temperature, pressure and catalyst action, the chlorine atom gradually replaces the hydrogen atom on the benzene ring. However, in this process, monochlorobenzene, dichlorobenzene and other mixtures are initially obtained, and fine separation is required to obtain high-purity trichlorobenzene. The separation method is often fractionated to take advantage of the difference in the boiling point of each compound and fractionate it one by one to achieve the purpose of purification.
Second, hexachlorocyclohexane (hexachlorocyclohexane) is used as There are various isomers of hexachlorobenzene, some of which can be converted into trichlorobenzene under suitable conditions by catalytic dechlorination reaction. This reaction requires the selection of a specific catalyst and strict control of the reaction conditions, such as temperature, pH, etc., to improve the yield and purity.
Third, m-dichlorobenzene is used as the raw material. Under specific reagents and reaction conditions, m-dichlorobenzene can introduce a third chlorine atom to generate trichlorobenzene. This process requires precise regulation of the reaction conditions to ensure the selectivity of the reaction and reduce the occurrence of side reactions.
All preparation methods have their own advantages and disadvantages. With the method of benzene chlorination, the raw materials are easy to obtain, but the separation process is complicated; with 666 as the raw material, although the waste can be used, the catalyst selection and reaction conditions need to be paid attention to; with m-dichlorobenzene as the raw material, the control of reaction selectivity is the key. For the preparation of trichlorobenzene, the appropriate method should be carefully selected according to the actual needs, the availability of raw materials and costs.
Sym-trichlorobenzene impact on the environment
Sym-trichlorobenzene, that is, trichlorobenzene. The impact of this substance on the environment cannot be ignored.
trichlorobenzene has certain toxicity. If it escapes into the atmosphere, it can migrate with the airflow, and some are degraded by photolysis in the atmosphere, but it can also be retained for a long time, affecting air quality and causing changes in atmospheric composition. If inhaled, it may damage the respiratory system and nervous system.
In the aquatic environment, it is insoluble in water, but it can be adsorbed by suspended particles in the water and settle to the sediment at the bottom of the water. If aquatic organisms ingest particles containing this substance, or concentrate in the body, it will cause physiological function to be disturbed, such as affecting reproduction, growth and development, and even death. As a result, the food chain is impacted, from low-level organisms to high-level organisms, and the impact progresses layer by layer.
In soil, trichlorobenzene can be slowly decomposed by soil microorganisms, but the process is long. It will change the physical and chemical properties of the soil, affect the nutrient cycle and exchange in the soil, cause plant roots to be blocked in nutrient absorption, stunted development, and then affect the entire terrestrial ecosystem.
And trichlorobenzene is chemically stable, difficult to degrade completely in the natural environment, long-term accumulation, serious damage to the ecological balance, so its production, use and discharge should be carefully regulated to protect the ecological environment.
trichlorobenzene has certain toxicity. If it escapes into the atmosphere, it can migrate with the airflow, and some are degraded by photolysis in the atmosphere, but it can also be retained for a long time, affecting air quality and causing changes in atmospheric composition. If inhaled, it may damage the respiratory system and nervous system.
In the aquatic environment, it is insoluble in water, but it can be adsorbed by suspended particles in the water and settle to the sediment at the bottom of the water. If aquatic organisms ingest particles containing this substance, or concentrate in the body, it will cause physiological function to be disturbed, such as affecting reproduction, growth and development, and even death. As a result, the food chain is impacted, from low-level organisms to high-level organisms, and the impact progresses layer by layer.
In soil, trichlorobenzene can be slowly decomposed by soil microorganisms, but the process is long. It will change the physical and chemical properties of the soil, affect the nutrient cycle and exchange in the soil, cause plant roots to be blocked in nutrient absorption, stunted development, and then affect the entire terrestrial ecosystem.
And trichlorobenzene is chemically stable, difficult to degrade completely in the natural environment, long-term accumulation, serious damage to the ecological balance, so its production, use and discharge should be carefully regulated to protect the ecological environment.
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