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Allyl Bromide

Chloroalkane Bromoalkane Aromatic Bromine Derivatives Bromoacid Ester Compounds Other Bromide Compounds

Allyl Bromide

Qiji Chemical

Allyl Bromide
Specifications

HS Code

116976
Chemical Formula C3H5Br
Molar Mass 120.98 g/mol
Appearance Colorless to pale yellow liquid
Odor Pungent, irritating odor
Density 1.401 g/mL at 25 °C
Boiling Point 71 - 73 °C
Melting Point -119 °C
Solubility In Water Slightly soluble
Solubility In Organic Solvents Soluble in ethanol, ether, chloroform
Flash Point -2 °C
Vapor Pressure 36 mmHg at 20 °C
Refractive Index 1.465 - 1.467
Packing & Storage
Packing Allyl Bromide in 500 - mL glass bottle, tightly sealed for safe storage.
Storage Allyl bromide should be stored in a cool, well - ventilated area away from heat sources and open flames. It must be kept in a tightly - sealed container, preferably made of glass or a compatible plastic. Store it separately from oxidizing agents, bases, and other reactive chemicals. Regularly check for leaks to ensure safety.
Shipping Allyl bromide, a hazardous chemical, must be shipped in accordance with strict regulations. It should be in well - sealed, appropriate containers, labeled clearly. Shipment is via approved carriers with safety measures to prevent leakage and ensure safe transport.
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Allyl Bromide Allyl Bromide
General Information
Historical Development
The industry of chemical industry is changing with each passing day, and the research of substances is quite related to the world's luck. Today, Allyl Bromide is a product that is not shallow in the field of chemical industry.
Trace back to its source, the understanding was not deep at the beginning, and the research was fresh. Later, various sages worked hard to gradually clarify its properties. Its quality is lively and its response is specific, which can be the basis for all kinds of synthesis. In the past, it was limited to skills, and the preparation was difficult, and the output was quite small.
However, science and technology are advancing day by day, and the production method is new. From the tedious and laborious in the past, it is now convenient and efficient, and the output has also increased greatly. Its use is gradually widening, and it has its merits in medicine and materials. Looking at its development path, it is like a boat sailing in the sea. Although it has experienced twists and turns, it will eventually break through the waves and move forward, adding its brilliance to the history of chemical industry.
Product Overview
Allyl bromide is an important reagent in organic chemistry. Its color is clear, it looks like a liquid flow, and it has a pungent smell. Allyl bromide has a unique structure and active chemical properties.
Its preparation method is often formed by the reaction of allyl alcohol and hydrobromic acid. During the reaction, it is necessary to control the temperature and rate to obtain a pure product.
Allyl bromide has a wide range of uses. It is a key raw material for the construction of complex molecular structures in the field of organic synthesis. It can participate in many reactions such as nucleophilic substitution and addition to prepare various allyl derivatives.
However, it is active and dangerous. In case of open flames and hot topics, it is very easy to burn, and its volatile gas is irritating to the eyes and respiratory tract of the human body. Therefore, when using it, safety procedures must be strictly followed to prevent accidents. Allyl bromide plays an important role in chemical research and industrial production, and is a key factor in the development of organic chemistry.
Physical & Chemical Properties
Taste the industry of chemical industry, there is a name Allyl Bromide. Its quality is also, the color is clear and the taste is strong, the nature is active, often in the field of organic synthesis.
Looking at its physical properties, it is liquid at room temperature, flowing but not stagnant, the density is larger than that of water, placed in a container, and sinks at the bottom of water. Its boiling point is moderate, and when heated, it is easy to vaporize into steam, which is volatile, and its unique gas can be smelled in the air.
As for the chemical properties, the allyl structure gives it active energy. At the carbon-carbon double bond, it is easy to react with additives, and can quickly combine with halogens, hydrogen halides and other electrophilic reagents to form new compounds. Its bromine atom is also active and can be substituted in alkali, which is the key to the synthesis of various organic molecules. In the process of organic synthesis, Allyl Bromide is like a key, opening many reaction doors, helping chemists build molecular structures, and contributing to the progress of chemical industry.
Technical Specifications & Labeling
Nowadays, there are allyl bromide, and its technical specifications and identification (product parameters) are the key. Allyl bromide, clear in color and strong in taste, is volatile. Its technical specifications need to be accurate, the purity should exceed 90% to 5, and the impurities should be less and less.
In the label, the product parameters are detailed, including molecular weight, boiling point, and melting point. The boiling point is about 70 and 1 degrees Celsius, and the melting point is about minus 115 degrees Celsius. And it must be marked with warning words. Because it is toxic and corrosive, it can be harmful when it touches the skin, enters the eyes or inhales.
Strict regulations are also followed for storage and transportation. It should be placed in a cool, dry and ventilated place to avoid fire and heat. During transportation, follow the example of toxic and hazardous substances to ensure safety. In this way, the technical specifications and labels of the allyl bromide are correct to meet the needs of all parties.
Preparation Method
If you want to make Allyl Bromide products, the raw materials and production process, reaction steps and catalytic mechanism are all of the most important things.
The raw materials are often propylene and hydrogen bromide. Propylene, a common raw material in the chemical industry, comes from a wide range of sources. Hydrogen bromide is also readily available.
The production process first makes propylene and hydrogen bromide mix into a special reactor. The temperature and pressure in the kettle must be controlled to meet the needs of the reaction. In the reaction step, the double bond of propylene meets hydrogen bromide and starts an addition reaction. In this step, the double bond of propylene is broken, and the hydrogen and bromine are attached to the broken bond, thus forming Allyl Bromide.
The catalytic mechanism is often promoted by a specific catalyst. The catalyst can reduce the activation energy of the reaction and increase the reaction rate. In this way, Allyl Bromide can be obtained under milder conditions, with high yield and good quality.
Chemical Reactions & Modifications
In the case of Allyl Bromide, its transformation and modification are the key to our research.
Allyl Bromide is also allyl bromide. Its transformation should be changeable, and it often involves the way of nucleophilic substitution. In alkali, halogens are easily replaced by nucleophilic reagents, and various new products are produced. However, this should also have its own difficulties, such as the disturbance of side reactions, resulting in impure products.
If you want to change its properties, you can use chemical modification methods. Introduce other groups, or adjust their conditions to achieve what you want. If you change the temperature, pressure, and select the right catalyst, you can conduct the reaction and increase the purity and rate of the product.
Our researchers should study the mechanism of this chemical reaction in order to improve its modification method. We hope to control the properties of Allyl Bromide and create more benefits for the chemical industry.
Synonyms & Product Names
Allyl Bromide, Chinese name allyl bromide, this substance has a wide range of uses and has made great contributions to the field of organic synthesis. Its synonymous name is also known as 3-bromopropene.
Guanfu allyl bromide, its reactivity, is a key raw material for many reactions. Due to its reactivity, it can combine with various reagents to produce a variety of organic compounds. The name 3-bromopropene is also widely spread in the academic world. Although the names are different, they are all the same, referring to this chemical substance.
In the field of chemistry, there are many things with different names but the same substance. Allyl bromide and 3-bromopropene have different names, but they are the same entity. In the context of research and production, both names are often mentioned by chemists, contributing to the development of organic synthesis and promoting progress in the field of chemistry.
Safety & Operational Standards
Allyl Bromide is also a chemical substance. It is useful in the field of work and transportation. However, this substance is dangerous, so its safe operation cannot be ignored.
As far as safety is concerned, Allyl Bromide is irritating, and its skin and mucous membranes cannot be damaged. Smell it, and it is also harmful to the respiratory system. If it is placed in the air, or in contact with oxidized substances, it is easy to produce danger. Therefore, it must be used in the air, dryness, and communication, and it must be used in the source of fire, oxidation and oxidation.
When it comes to operation, it is necessary to take precautions against this, such as gloves, eyes, and anti-virus devices, etc., to avoid being exposed to it. When operating, it must be done in a good place, or in the process of drainage, so that the harmful things can be dispersed. When using the equipment, it must be used, and it should not be left behind. If there is a leak, it should be sent to the source quickly, and it should be dispersed. For small leaks, you can collect them with sand and other materials; for large leaks, you should properly dispose of them according to the corresponding method.
In this case, Allyl Bromide can handle useful things safely, but it is safe to operate them, and it is difficult to care about the heart. Those who do not cooperate with each other should act accordingly, so as to avoid danger and ensure safety.
Application Area
Allyl Bromide is also used for chemical substances. In the field of synthesis, it is often necessary. It can be used as an allylation agent, introducing allyl into compounds, so as to improve its properties. It is a useful compound.
In the research and development of chemical substances, it also has its function. It can help to form chemical molecules, or increase their activity, or change their solubility, so that the effect is better.
And in the field of material science, it can be used to repair the surface of materials, increase the new energy of materials, such as increasing their adhesion, resistance, etc. In other words, Allyl Bromide plays an important role in the field of multi-purpose, promoting chemical, chemical, and material science.
Research & Development
In recent times, chemistry has flourished, and all kinds of new things have emerged in an endless stream. Among them, Allyl Bromide has attracted the attention of our chemical researchers.
We have tried our best to explore its properties. After repeated trials, we know that its structure is unique, the reaction is active, and it has great potential in the field of organic synthesis.
At the beginning, the preparation method was cumbersome and the yield was low. However, we worked tirelessly to improve the process. With new agents to supplement its conditions, the yield gradually increased and the quality was also excellent.
Looking at its application, it has emerged in the fields of medicine and materials. It can be used to make special drugs, and it can also be tough.
We will continue to make progress and dig deeper into its potential. Hope to expand new paths, contribute to the development of chemistry and industry, and promote its continuous development to benefit the world.
Toxicity Research
Since modern times, the science of chemistry has advanced day by day, and the study of substances has become more and more clear. Today's research on Allyl Bromide's product, the study of its toxicity is quite important.
Looking at its properties, Allyl Bromide has the ability to stimulate, touch the skin, and enter the aperture of the breath, which can cause harm. There have been experiments, and small animals have been exposed to this product, but soon they will be seen to be restless and physiological violations, which shows their toxicity.
It is also tested for its use. Although it is useful in the chemical industry, it must be careful because of its poison. When handling this product, you should add protective gear and do it in a well-ventilated place to prevent poison from invading the body. And when stored, it is also necessary to abide by the rules to prevent it from leaking and harming the surroundings.
In summary, Allyl Bromide's toxicity is well known, and it must be used with safety as the first priority, not to be ignored, in order to ensure people's safety and prosperity.
Future Prospects
Today, Allyl Bromide has great potential in the field of chemical industry. Although the current knowledge is limited, but looking forward to the future, it will bloom.
This product has unique chemistry and can be used in various synthesis. Or it can make achievements in the creation of medicine, add a sharp edge to the elimination of diseases and diseases. Or in the field of material research and development, emerge, create novel materials, and serve people's livelihood.
Although there may be thorns in the road ahead, science and technology are advancing day by day and research is unremitting. With time, it will be able to explore its secrets and make its advantages fully apparent. At that time, Allyl Bromide will become a key player in promoting the progress of the chemical industry, painting a brilliant picture in the future, helping the development of the world and opening a new chapter.
Frequently Asked Questions
What are the main uses of Allyl Bromide?
Allyl bromide is also a chemical substance. It has a wide range of uses and is very useful in the field of organic synthesis.
First, allyl bromide can be used for the preparation of ethers. Under suitable reaction conditions, allyl bromide meets alcohols and can react nucleophilically. The oxygen atom of the hydroxyl group in the alcohol is nucleophilic and can attack the carbon atom of allyl bromide. The bromide ions leave and form allyl ether compounds. These allyl ethers are often important intermediaries in organic synthesis and can participate in various subsequent reactions to construct more complex organic molecules.
Second, allyl bromide is also effective in the formation of carbon-carbon bonds. For example, it can react with metal-organic reagents, such as Grignard reagent or organolithium reagent. The carbon anion part of the metal-organic reagent has strong nucleophilicity and can be combined with the allyl part of the allyl bromide to form new carbon-carbon bonds. This is a common method for growing carbon chains and constructing complex carbon skeletons in organic synthesis.
Third, allyl bromide is also useful in the synthesis of nitrogen-containing compounds. When reacting with amines, allyl can be introduced by means of a nucleophilic substitution mechanism to obtain allyl amines. Such compounds have important applications in many fields such as medicine, pesticides, and materials science.
Fourth, allyl bromide is used in polymerization reactions and can be used as a monomer or cross-linking agent. Because its molecular structure contains unsaturated double bonds of allyl, it is reactive and can participate in free radical polymerization or ionic polymerization to prepare polymer materials with special properties. For example, copolymerization with other monomers can adjust the properties of polymers, such as solubility and mechanical properties; when used as a cross-linking agent, a cross-linking structure can be formed between polymer chains to improve the strength and stability of the material.
What are the physical properties of Allyl Bromide?
Allyl bromide is also an organic compound. It has special physical properties and is listed below.
Looking at its properties, allyl bromide is a colorless to light yellow transparent liquid at room temperature and pressure, and emits a pungent smell, which is uncomfortable to smell.
When talking about the boiling point, it is about 71-72 ° C. At this temperature, allyl bromide changes from liquid to gaseous state. The boiling point value is crucial for its separation and purification in chemical production and experimental operations.
As for the melting point, the melting point of allyl bromide is about -119 ° C. When the temperature drops to this point, it solidifies from liquid to solid. This property requires special attention during low-temperature storage and transportation.
The density of allyl bromide is heavier than that of water, about 1.398g/cm ³, so when mixed with water, it can be seen that it sinks to the bottom of the water. This density difference is different from that of material separation and identification, which is helpful.
Furthermore, allyl bromide is slightly soluble in water, but can be miscible with organic solvents such as ethanol, ether, and chloroform. This solubility characteristic is often an important basis for selecting solvents in organic synthesis reactions, and is related to the process and effect of the reaction.
And it is volatile and volatile in the air. When storing and using this property, it is necessary to carefully guard against its volatilization loss and safety risks.
In summary, the physical properties of allyl bromide are of great significance in many fields such as chemical industry and scientific research. Those who handle this material must not ignore it.
What is the chemistry of Allyl Bromide?
Allyl bromide (Allyl Bromide) has unique chemical properties and is a key raw material for organic synthesis. Allyl bromide contains active allyl groups and has high reactivity.
It is active in nucleophilic substitution reactions. In case of hydroxyl anions (OH), bromine atoms are easily replaced by hydroxyl groups to obtain allyl alcohol. This reaction can occur under mild conditions because allyl can stabilize the transition state of the reaction. Nucleophilic reagents such as alkoxides and thiols can also react smoothly with allyl bromide to generate corresponding ethers or thioether compounds.
Allyl bromide can also participate in the addition reaction. Under the action of suitable catalysts, it can be added to olefins to build more complex carbon skeletons. In the conjugate addition reaction, allyl bromide is combined with the conjugated system to expand the carbon chain, and the reaction selectivity is good, and the product structure is diverse.
In addition, allyl bromide can eliminate the reaction. Under the action of strong bases, the bromine atom and the hydrogen atom on the adjacent carbon are removed, forming a carbon-carbon double bond to form an allyl olefin compound. This reaction condition needs to be properly controlled, otherwise it is prone to side reactions.
The chemical properties of allyl bromide make it widely used in the field of organic synthesis. It is of great value in the preparation of drugs, fragrances, polymer materials, etc. It can construct complex organic molecular structures and provide an effective path for the synthesis of many compounds.
What are the precautions for Allyl Bromide during storage and transportation?
Allyl bromide is a commonly used reagent in organic chemistry. When storing and transporting it, you need to pay attention to many matters, as detailed below:
First, allyl bromide is volatile and irritating, and harmful to the human body. Therefore, when storing and transporting, it is necessary to ensure that the container is well sealed to prevent leakage, so as not to endanger human health and pollute the environment. This is a top priority and concerns everyone's safety.
Second, allyl bromide is a flammable substance, which is very easy to burn in case of open flames and hot topics. Therefore, storage and transportation places must be kept away from fire and heat sources, fireworks are strictly prohibited, and corresponding fire equipment should be equipped for emergencies.
Third, allyl bromide should be stored in a cool and ventilated warehouse to avoid direct sunlight. Due to high temperature, it is easy to increase its volatilization and even cause danger. At the same time, it should be stored separately from oxidants, acids, alkalis, etc., and should not be mixed to prevent chemical reactions.
Fourth, when transporting allyl bromide, it is necessary to strictly follow relevant regulations and select qualified transportation enterprises and transportation tools. During transportation, ensure that the container is stable to prevent collision and dumping.
Fifth, storage and transportation personnel should receive professional training, familiar with the properties, hazards and emergency treatment methods of allyl bromide. In the event of leaks and other accidents, response measures can be taken quickly and effectively to reduce losses.
What are the preparation methods of Allyl Bromide?
There are several common methods for preparing allyl bromide. First, the reaction of allyl alcohol with phosphorus tribromide. Allyl alcohol is an alcohol with allyl group, and phosphorus tribromide is a bromination reagent. Mixing the two, at a suitable temperature, the hydroxyl group of allyl alcohol is replaced by a bromine atom, so allyl bromide is obtained, and by-product phosphoric acid. The reaction is quite direct, so it is necessary to pay attention to the control of the reaction conditions to prevent side reactions from occurring.
Another method involves the reaction of allyl chloride and sodium bromide with the help of a phase transfer catalyst. Allyl chloride is easy to obtain, and sodium bromide is also a common reagent. The phase transfer catalyst can promote the smooth progress of the reaction between the two phases, and increase the reaction rate and yield. In this reaction system, chloride ions and bromine ions are exchanged, and the allyl group is partially retained, resulting in allyl bromide.
In addition, the reaction of propylene and hydrogen bromide in the presence of peroxide is a free radical addition reaction. The peroxide initiates a free radical reaction, so that the hydrogen and bromine of hydrogen bromide are added to the two ends of the propylene double bond to form allyl bromide. This reaction condition is mild and convenient to operate. However, factors such as the amount of peroxide and the reaction temperature have a great influence on the purity and yield of the product, and need to be carefully controlled.
The various methods for preparing allyl bromide have their own advantages and disadvantages. Experimenters should choose carefully according to factors such as their own needs, availability of raw materials, and experimental conditions, in order to achieve the best preparation effect.