1,2-Dibromobenzene

Qiji Chemical

Specifications

HS Code	515176
Chemical Formula	C6H4Br2
Molar Mass	235.90 g/mol
Appearance	Colorless to light - yellow liquid
Density	1.982 g/cm³ at 20 °C
Boiling Point	224 - 226 °C
Melting Point	-7 °C
Solubility In Water	Insoluble
Solubility In Organic Solvents	Soluble in common organic solvents like ethanol, ether, benzene
Vapor Pressure	0.13 kPa at 44.4 °C
Odor	Characteristic aromatic odor
Flash Point	96 °C

Packing & Storage

Packing	1,2 - Dibromobenzene in 500 - mL glass bottle, tightly sealed for chemical storage.
Storage	1,2 - Dibromobenzene should be stored in a cool, well - ventilated area away from heat and ignition sources. It should be kept in a tightly closed container, preferably made of corrosion - resistant materials. Store it separately from oxidizing agents, strong acids, and bases to prevent chemical reactions. Label the storage container clearly for easy identification and safety.
Shipping	1,2 - Dibromobenzene is shipped in tightly - sealed, corrosion - resistant containers. It's handled with care due to its potential hazards. Shipment adheres to strict chemical transport regulations to ensure safety during transit.

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General Information

Historical Development

A scholar who has heard of the ancient times, every time a thing changes, he observes its traces and knows why it is. Now 1,2 - Dibromobenzene This thing, the evolution of its history, is also very interesting.
In the past, at the beginning of the rise of chemistry, all the sages were dedicated to the identification of matter. 1,2 - Dibromobenzene first appeared in the field of human vision, and at that time everyone explored its nature and studied its success. As the years passed, the research deepened. Craftsmen studied hard in their craftsmanship, wanting to improve the method of its preparation.
Because of this, its use is also expanding. In the field of medicine, it helps the research of new drugs; in the world of materials, it adds new quality. Viewing its history is like walking on a path, gradually getting through. The exploration of the past has become the cornerstone of today, making this thing show its shining light on the stage of this world, benefiting everyone, and also inspiring endless thoughts for future researchers.

Product Overview

1,2-Dibromobenzene is an organic compound. It is a colorless to light yellow liquid with a special odor. Its boiling is high, about 180 degrees, and it is stable at room temperature and pressure.
The preparation method of this compound is often based on benzene and obtained by the reaction of bromination. During the reaction, a catalyst is required to promote it, such as iron filings.
1,2-dibromobenzene has a wide range of uses and is an important intermediate in the field of organic synthesis. It can be used to make medicines, pesticides, dyes, etc. For example, it can be turned into a pharmaceutical ingredient with special effects through a series of reactions, and can also be used as a raw material for the synthesis of new dyes, which can help dyes have better color and fastness.
However, this substance is toxic to a certain extent. When used and stored, follow safety regulations to prevent its leakage and avoid harm to people and the environment.

Physical & Chemical Properties

1,2 - Dibromobenzene is an organic compound. It has special physical and chemical properties. Looking at its physical properties, it is a colorless to light yellow liquid at room temperature, with a pungent odor, insoluble in water, but miscible in ethanol, ether and other organic solvents. Its boiling point is quite high, about 180-182 ° C, due to intermolecular forces.
On its chemical properties, the presence of the benzene ring gives it aromaticity. The substitution of bromine atoms makes its chemical activity different. It can participate in nucleophilic substitution reactions because bromine atoms have certain leaving properties. Under suitable conditions, nucleophiles can attack the benzene ring and replace bromine atoms. And because of its structure, halogenation, nitrification and other reactions can occur, which is of great application value in the field of organic synthesis. In-depth investigation of its physical and chemical properties will help to expand the understanding and application of organic chemistry.

Technical Specifications & Labeling

For 1,2-dibromobenzene, it is also a chemical product. The technical quality of the product (commodity quality) is of paramount importance. For technical quality, the quality of the product involved should not exceed a trace amount. Its color should be clear and clear, and it should be clear. The physical quality also has a fixed value, and the melting temperature must be determined.

(commodity quality) must state its name, chemical formula, molecular weight, etc. On the package, it must be written in clear words, so that the user can see it at a glance. And the dangerous characteristics, such as corrosion, toxicity, etc., to warn the world and prevent it from happening. In this way, it is possible to make 1,2-dibromobenzene suitable for use and safe.

Preparation Method

The preparation of 1,2-dibromobenzene involves raw materials and production processes, reaction steps and catalytic mechanisms. In the past, benzene was often used as the initial raw material, supplemented by bromine, to initiate the reaction in the presence of a catalyst.
First take an appropriate amount of benzene and place it in a special reaction vessel, and add an appropriate amount of iron powder or iron tribromide as a catalyst, which can effectively promote the reaction. Subsequently, slowly inject bromine, and the reaction starts immediately to generate 1,2-dibromobenzene and hydrogen bromide. This reaction is an electrophilic substitution reaction. Bromine molecules are polarized under the action of the catalyst. One bromine atom attacks the benzene ring and replaces the hydrogen atom to complete the reaction step.
In order to improve the yield and purity, the reaction temperature and time need to be carefully adjusted. If the temperature is too low, the reaction will be slow; if the temperature is too high, the side reactions will increase. Usually controlled in a suitable temperature range, after a few hours of reaction, specific separation methods, such as distillation, extraction, etc. are used to obtain pure 1,2-dibromobenzene products. This preparation method has been mature after years of practice and can produce qualified products stably.

Chemical Reactions & Modifications

1,2-Dibromobenzene is also an organic compound. In the field of chemistry, its reaction and modification are often studied by scholars. In the past, to obtain this compound, benzene was often used as the beginning, and the reaction was brominated. However, this ancient method did not have good efficiency and many by-products.
Today's chemists study ways to improve. Or find new catalysts to make the reaction better and reduce the amount of by-products; or change the conditions of the reaction, such as temperature control and pressure regulation, to promote the efficient progress of the reaction. This is all to improve the quality and quantity of 1,2-dibromobenzene production, and to improve its chemical reactions and properties. Scholars hope that with unremitting research, this compound can be used in chemical, pharmaceutical and other industries to develop greater utility.

Synonyms & Product Names

1,2-Dibromobenzene is also a chemical substance. In the field of chemical industry, it is a halogenated aromatic hydrocarbon with special properties and uses.
In the past, people sought to know about it, and explored its synonyms and commodity names. After many experiments and studies, we have learned many names for it. Its synonyms are called o-dibromobenzene, which is named after the position of the bromine atom on its benzene ring to illustrate the characteristics of its structure. As for the trade names, they are also different due to the needs of the city and the different production processes.
However, if we want to know more about it, we must deeply cultivate the principles of chemistry, observe the nature of its reactions, and the methods of control, in order to obtain its true meaning, so as to make good use of it in all things chemical and promote the prosperity of its industry.

Safety & Operational Standards

1,2-Dibromobenzene is also a chemical product. In the way of experimentation, safety and operating standards are really the most important and cannot be ignored.
All services involved in the preparation and use of 1,2-dibromobenzene are the first priority for the safety of the environment. The experimental room should be well ventilated to prevent the accumulation of toxic gases. The utensils used must be clean and intact, without the risk of damage and leakage.
When preparing, the operator must abide by the procedures. The amount of materials and the proportion are accurate, and there should be no slight difference. The degree of heating should also be controlled to be appropriate, slow and uniform, so as not to cause sudden changes. The speed of stirring is also related to the smoothness of the reaction, and it must be adjusted in a timely manner.
When taking it, protective gear is indispensable. The gloves must be resistant to corrosion, and the mask can filter poisonous gas to ensure that the skin and breathing are safe. And the amount should be appropriate, do not be greedy for too much waste, and prevent excessive risk.
After the reaction is completed, there is also a way to store the product. It should be placed in a cool and dry place with a sealed device, away from direct sunlight, and away from fire and heat sources.
The principle of waste is also followed. Do not discard it at will, to prevent pollution of the environment and harm to life. When collected by classification, dispose of it according to the specified law.
Everything about 1,2-dibromobenzene is based on safety and regulations. The operator must always be in awe and focus on the details to ensure that the experiment is smooth and harmless.

Application Area

1,2-Dibromobenzene is also an organic compound. It has a wide range of uses in the chemical industry. In the field of pharmaceutical synthesis, it can be an important raw material for the creation of a variety of special drugs and the healing of various diseases. In the field of materials science, it can participate in the preparation of high-performance materials, increase their characteristics, such as improving the stability and durability of materials. In the fine chemical industry, it is often a key intermediate, derived from many fine chemicals, used in daily use, electronics and other industries. And its unique chemical structure allows scientists to explore new reaction paths and expand the boundaries of organic synthesis. In the process of chemical research, it is of great significance and promotes the continuous advancement and expansion of related application fields.

Research & Development

Today, there is a product named 1,2-dibromobenzene, which is quite important in our chemical research. We have devoted ourselves to exploring its properties, preparation methods and applications.
We have tried repeatedly to observe its physical properties, know its color and taste, etc. As for the production method, many attempts have been made, or it is obtained by halogenation of benzene, but we need to pay attention to the control of conditions in the process to ensure that the yield is improved.
In terms of application, it is a key raw material in the field of organic synthesis and can be used to produce a variety of compounds.
Our researchers are committed to making breakthroughs in the research and development of 1,2-dibromobenzene, contributing to the progress of chemistry, so that this material can be used in more fields, play a role, and promote the rise of science and technology.

Toxicity Research

Those who have studied poisons in recent times have investigated the toxicology of 1,2-Dibromobenzene. This chemical is also related to the health of all life and cannot be ignored.
Investigate 1,2-Dibromobenzene in detail, observe the changes it takes in things, and observe its behavior after entering the body. After various experiments, explore its impact on biological tissue and function. Or damage the viscera, or disrupt qi and blood, the harm of its poison should not be underestimated.
However, if you want to understand its poison, it cannot be done overnight. It is necessary to use scientific methods, carefully investigate, and observe it from different dimensions, such as the difference in dose and duration, the toxic effect is also different. Only in this way can we obtain the truth of its toxicology, provide evidence for prevention and treatment, and protect sentient beings from being invaded by poisons.

Future Prospects

Looking forward to the future, I am full of expectations for 1,2-dibromobenzene. This substance has deep potential in the field of chemical industry.
Looking at the current situation, although the preparation method has been achieved, there is still room for improvement. In the future, I hope to find better processes, increase productivity and reduce costs. In this way, it can make it more competitive in the market.
Furthermore, the use of 1,2-dibromobenzene is also expected to expand. In addition to the currently known fields, it may emerge in the research and development of new materials. With time, many novel applications may be spawned, bringing different conveniences to our lives.
I firmly believe that as long as the academic community and the industry work together and study unremittingly, the future of 1,2-dibromobenzene will be like the bright stars, illuminating the long journey of chemical development and blooming more brilliantly.

Frequently Asked Questions

What are the main uses of 1,2-dibromobenzene?

1,2-dibromoethane is a crucial raw material in organic synthesis and has many main uses.
In the field of organic synthesis, one of them can be used as an alkylation agent. With the high reactivity of the bromine atom in its molecule, it can be substituted with many nucleophiles, thereby introducing ethyl, which is widely used in the preparation of organic compounds with specific structures. For example, in the synthesis of certain drugs, fragrances and special functional materials, 1,2-dibromoethane is often used to participate in the reaction to build the required carbon skeleton structure. Second, 1,2-dibromoethane is a key raw material for the preparation of vinyl bromide. Under appropriate reaction conditions, 1,2-dibromoethane can be eliminated to form vinyl bromide, which is an important intermediate in many organic synthesis reactions, such as polymerization and cyclization.
In industrial production, 1,2-dibromoethane has been widely used as an additive in leaded gasoline. During gasoline combustion, it can react with lead to form volatile lead bromide, thus preventing lead from depositing on the inner surface of the engine and ensuring the normal operation of the engine. However, due to the great harm to the environment and human health of leaded gasoline, this use has been greatly reduced today. In addition, 1,2-dibromoethane is also used in refrigerants, fumigants and other fields. In terms of refrigerants, due to their suitable physical properties, they can play a role in specific refrigeration systems; in terms of fumigants, they can effectively kill storage pests, soil pests, etc., and ensure the safety of food and agricultural products storage and planting.
In summary, although some uses of 1,2-dibromoethane are limited due to environmental factors, it still occupies an indispensable position in fields such as organic synthesis, which is of great significance for promoting the development of the chemical industry and related fields.

What are the physical properties of 1,2-dibromobenzene?

1,2-Dibromoethane is an organic compound. Its physical properties are quite unique. Looking at its appearance, it is a colorless and transparent liquid at room temperature and pressure, and the texture is relatively viscous. Smell it, it has a sweet aroma like chloroform. Its density is greater than that of water, about 2.17 g/cm ³, so when mixed with water, it will sink to the bottom of the water. The melting point of this substance is -35 ° C, and the boiling point is 131.4 ° C. Because of its certain volatility, it will evaporate slowly in air.
1,2-dibromoethane is insoluble in water, but it can be miscible with ethanol, ether, chloroform and many other organic solvents in any ratio. This difference in solubility is due to its molecular structural properties. Its molecular polarity is relatively weak, while water is a strong polar solvent, according to the principle of "similar miscibility", so it is difficult to dissolve in water; organic solvents are mostly weakly polar or non-polar, and are similar to the intermolecular force of 1,2-dibromoethane, so they can dissolve each other.
In addition, the vapor of 1,2-dibromoethane is heavier than air, and can spread to a considerable distance at a lower place. In case of open flames and hot topics, it is easy to cause combustion and explosion. Special attention should be paid to safety when using and storing.

What are the chemical properties of 1,2-dibromobenzene?

1% 2C2-dibromoethane is an organic compound. It is a colorless and transparent liquid with a slightly sweet smell. This substance is widely used in the chemical industry and is often used as a solvent and a raw material for organic synthesis.
1% 2C2-dibromoethane has unique chemical properties. Its molecule contains two bromine atoms, which enhances the polarity of the molecule. The chemical properties of this compound are active and can react with many substances.
In the nucleophilic substitution reaction, the bromine atom of 1% 2C2-dibromoethane is easily attacked by nucleophiles, resulting in substitution. For example, when heated with an aqueous solution of sodium hydroxide, the bromine atom will be replaced by a hydroxyl group to form ethylene glycol. This reaction mechanism is that the nucleophilic reagent (hydroxide ion) attacks the carbon atom, causing the bromine ion to leave.
1% 2C2-dibromoethane can also be eliminated. In an alcohol solution of a strong base, it can remove two molecules of hydrogen bromide to form acetylene. This process is that the bromine atom and the hydrogen atom on the adjacent carbon atom are removed in the form of hydrogen bromide under the action of a base to form a carbon-carbon triple bond.
In addition, the stability of 1% 2C2-dibromoethane is relatively poor, and it is easy to decompose to produce substances such as hydrogen bromide when exposed to light, heat or some catalysts. During storage and use, care should be taken to avoid exposure to high temperature, strong light and other environments to prevent decomposition from causing danger.
1% 2C2-dibromoethane is chemically active due to the presence of bromine atoms and can participate in a variety of chemical reactions. It plays an important role in the field of organic synthesis, but its stability also determines that it needs to be carefully operated in practical applications.

What are the precautions for the production of 1,2-dibromobenzene?

1% 2C2-dibromoethane is a highly toxic product, and many matters need to be paid attention to during the production process.
First, it is related to personnel protection. Producers must wear complete protective clothing, including gas masks, protective gloves, protective shoes, etc., to prevent skin and respiratory tract contact with this substance. Because of its strong toxicity, a little inadvertent contact may endanger life and health.
Second, ventilation of the production environment is essential. An efficient ventilation device must be installed to continuously circulate the air in the production space, and the volatile 1% 2C2-dibromoethane gas should be discharged in time to avoid its accumulation in the air and reduce the risk of poisoning.
Third, the airtightness and safety of the equipment cannot be ignored. The reaction kettle, pipeline and other equipment used in production must be well sealed to prevent leakage. Regular detailed inspection and maintenance of the equipment to prevent material leakage due to equipment aging and damage, resulting in safety accidents.
Fourth, strictly control the reaction conditions. In the production of 1% 2C2-dibromoethane, the reaction temperature, pressure, material ratio and other conditions have a great impact on the reaction process and product purity, and are related to production safety. Therefore, it is necessary to precisely control the reaction conditions and operate according to the standard process to avoid danger caused by runaway conditions.
Fifth, the disposal of waste should not be hasty. Waste containing 1% 2C2-dibromoethane generated during the production process shall be properly collected, stored and disposed of in accordance with relevant regulations, and shall not be discarded or discharged at will to prevent environmental pollution and ecological harm.

What are the effects of 1,2-dibromobenzene on the environment and human health?

1,2-Dichlorobenzene is also an organic compound. It has an impact on the environment and human health.
As far as the environment is concerned, 1,2-dichlorobenzene is volatile and can enter the atmosphere. In the atmosphere, it can be degraded by photochemical reactions, or it may form secondary pollutants such as photochemical smog, which is harmful to air quality. If it is released into the water body, it is easy to adsorb on suspended particles or sediment due to its hydrophobicity, resulting in its long-term retention in the water body, which is harmful to the aquatic ecosystem. If aquatic organisms come into contact with this substance, growth, reproduction may be affected, and even death. And it is transmitted and enriched through the food chain, or endanger higher trophic organisms.
As for human health, 1,2-dichlorobenzene can enter the human body through the respiratory tract, skin and digestive tract. If short-term exposure to high concentrations of 1,2-dichlorobenzene can irritate the eyes, nose, throat and other mucous membranes, causing discomfort, such as eye pain, runny nose, cough, etc. Long-term inhalation or exposure may affect the nervous system, causing dizziness, headache, fatigue, insomnia and other symptoms. What's more, it may damage the function of the liver and kidneys. Animal experiments have shown that this substance may have potential carcinogenicity. Although there is no conclusive conclusion in humans, it should not be taken lightly.
Therefore, 1,2-dichlorobenzene has latent risks to the environment and human health, and its production, use and discharge should be strictly controlled to reduce its harm to the ecological environment and human health.