Qiji Chemical
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1,3-Dibromopropane

Qiji Chemical

1,3-Dibromopropane
Specifications

HS Code

167791

Chemical Formula C3H6Br2
Molar Mass 201.887 g/mol
Appearance Colorless to light - yellow liquid
Odor Pungent odor
Density 2.02 g/cm³ (at 20 °C)
Boiling Point 167 - 168 °C
Melting Point -55 °C
Solubility In Water Insoluble in water
Solubility In Organic Solvents Soluble in ethanol, ether, chloroform, etc.
Vapor Pressure 0.44 kPa (20 °C)
Chemical Formula C3H6Br2
Molar Mass 201.887 g/mol
Appearance Colorless to pale - yellow liquid
Odor Characteristic, sweet - like odor
Density 2.007 g/cm³ at 20 °C
Boiling Point 167 - 168 °C
Melting Point -34.2 °C
Solubility In Water Insoluble
Solubility In Organic Solvents Soluble in many organic solvents like ethanol, ether
Flash Point 65 °C
Packing & Storage
Packing 1,3 - Dibromopropane packaged in 5 - liter containers for secure storage and transport.
Storage 1,3 - Dibromopropane should be stored in a cool, well - ventilated area, away from heat and ignition sources. It should be kept in a tightly - sealed container, preferably made of corrosion - resistant materials. Store it separately from oxidizing agents and incompatible substances to prevent reactions. Regularly check for any signs of leakage to ensure safety.
Shipping 1,3 - Dibromopropane is a hazardous chemical. Shipping requires proper packaging in accordance with regulations, likely in sealed, sturdy containers. It must be labeled clearly for its hazardous nature and transported by carriers licensed for such chemicals.
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1,3-Dibromopropane 1,3-Dibromopropane
General Information
Historical Development
1,3-Dibromopropane is also an organic compound. The origin of its history can be traced back to the past. In the past, chemical masters worked diligently in the field of organic synthesis. At the beginning, to obtain this compound, the path was difficult, and new materials and methods needed to be explored.
At that time, with unremitting spirit, the public went through countless trials and errors to gradually understand the method of synthesis. From simple raw materials, through exquisite reactions, 1,3-dibromopropane is obtained. Its application in industry has also become apparent over time. It was first used for niche experiments, but later it has gradually entered a wider field due to its unique properties. Or it is an intermediate in organic synthesis to assist in the synthesis of other substances; or it is prepared with special materials, adding unique properties. With the passage of time, the synthesis method has also been continuously refined, and the yield and purity have been improved, making it more and more important in the field of chemical industry and becoming an indispensable product.
Product Overview
1,3-Dibromopropane is also an organic compound. Its color is clear and transparent, and it has a special smell. This substance has a wide range of uses in the chemical industry and is often an important raw material for organic synthesis.
The method of preparation, or through the addition of propylene and hydrogen bromide, and then brominated with bromine. In its structure, two bromine atoms are attached to the 1 and 3 carbons of the propane chain, giving it unique chemical activity.
In the reaction, 1,3-dibromopropane can participate in many reactions such as nucleophilic substitution, providing a basis for the preparation of various bromine-containing organic compounds. However, it also has certain dangers. When operating, you need to pay attention to protection to prevent harm to the body.
Physical & Chemical Properties
1,3-Dibromopropane is also an organic compound. Its physical properties are colorless to light yellow liquid at room temperature, with a special odor, density greater than water, insoluble in water, and miscible in most organic solvents, such as ethanol, ether, etc. This is due to the difference between molecular polarity and water molecules. Its chemical properties are more active because of the bromine atom. It can be substituted with nucleophiles, and bromine atoms are easily replaced by hydroxyl groups, amino groups, etc. If co-heated with sodium hydroxide aqueous solution, bromine atoms are replaced by hydroxyl groups to form 1,3-propanediol. It can also be eliminated in a strong alkali alcohol solution to remove hydrogen bromide to form unsaturated hydrocarbons. This compound has a wide range of uses in the field of organic synthesis and can be used as a raw material for many organic reactions, assisting in the construction of various complex organic molecules.
Technical Specifications & Labeling
1,3-Dibromopropane is also an organic compound. The technical specifications and labeling (product parameters) for its preparation are related to the quality and application of this chemical.
The method of preparation must follow strict procedures. The choice of raw materials should be pure, and the proportion should be accurate. The temperature, pressure and time of the reaction are all key factors. If the temperature is too high or side reactions are caused, if the temperature is too low, the reaction will be slow. The appropriate pressure can ensure a smooth reaction.
In terms of labeling, the product parameters should be detailed. For example, purity must reach a very high standard, and the impurity content must be strictly controlled at the micro-end. The appearance state should also be clearly marked, which is a colorless liquid or has a specific color state. These technical specifications and markings are the foundation for ensuring the quality and safe application of 1,3-dibromopropane and should not be ignored.
Preparation Method
To prepare 1,3-dibromopropane, the raw material and production process, reaction steps and catalytic mechanism are the key. The previous method, or with propylene as the beginning, first with hydrogen bromide, to obtain 1-bromopropane, followed by bromine light substitution, the product can be obtained, but the steps are complicated and the yield is not good.
Today there is a new method, using propanol as the raw material, first with phosphorus tribromide to obtain 1-bromopropane, and then in an appropriate solvent, catalyzed by a strong base to eliminate hydrogen bromide to obtain propylene, and then added with bromine, this step is mild and the yield is quite good. In the reaction, the choice of catalyst is very important, which can promote the reaction speed and increase the purity of the product. And each step of the reaction requires precise temperature control and time control to achieve the best effect, so that 1,3-dibromopropane can be efficiently prepared.
Chemical Reactions & Modifications
I try to study the transformation and denaturation of 1,3 - Dibromopropane. The way of its transformation is related to the foundation of organic synthesis. The method of the past may have some problems, and I want to improve it.
To observe its transformation, there are various paths. However, the old method is inconvenient. If the yield is not ideal, side effects will occur frequently. In order to achieve the best denaturation, we must think of new innovations.
I will study it carefully, observe its structure, and think of ways to adjust its activity, increase its yield, and reduce its side effects. Or choose suitable reagents, and the conditions for controlling its reaction, temperature, pressure, and the nature of solvents, all need to be carefully considered.
If a delicate method is obtained to make 1,3-Dibromopropane fully capable in chemical reactions, with improved yield and high quality, it will be a significant improvement in the field of organic chemistry, and it will also pave the way for subsequent research.
Synonyms & Product Names
1,3-dibromopropane is also an organic compound. Its synonymous name and trade name are quite involved.
This compound is a synonymous name, either based on its structural characteristics, or due to the habit of calling it in the past. As for the trade name, the merchant depends on many factors such as the market and use.
In the field of chemical research, knowing its synonymous name can help researchers exchange information and avoid the confusion of the term. The knowledge of the trade name is also key to industrial application, which is related to procurement and sales.
1,3-dibromopropane is widely used in organic synthesis and so on. Knowing its synonymous name and trade name is like holding the key to open the door, allowing researchers to access the treasure house of knowledge and industrial applications, and to further explore and effectively use this compound to promote the progress of chemical research and industrial development.
Safety & Operational Standards
Safety and operation specifications for 1,3-dibromopropane
1,3-dibromopropane is an important substance in chemical research. It has strict safety and operation regulations in terms of experimental operation and storage, and should not be careless.
For storage, it should be placed in a cool and well-ventilated place. Keep away from fires and heat sources. Because of its flammability, it can burn in case of open flames and hot topics. Storage containers must be sealed to prevent leakage. And should be stored separately from oxidants and alkalis, and must not be mixed to avoid dangerous chemical reactions.
When operating, the experimenter must wear suitable protective equipment. Wear chemical safety glasses to prevent liquid from splashing into the eyes and damaging the eyes. Wear anti-poison penetrating work clothes to avoid skin contact. Wear rubber gloves to keep your hands safe.
When taking 1,3-dibromopropane, the action should be gentle to prevent it from evaporating into the air. If a leak occurs accidentally, don't panic. When a small amount leaks, it can be absorbed by inert materials such as sand and vermiculite. If a large amount leaks, it is necessary to build a dike or dig a pit to contain it, and cover it with foam to reduce steam disasters.
During the experiment, the ventilation equipment must be good and the volatile gas should be discharged in time. The waste after the experiment should not be discarded at will. It should be properly disposed of in accordance with relevant regulations to avoid polluting the environment.
All workers involved in 1,3-dibromopropane should be familiar with this safety and operation code and remain vigilant at all times to ensure the safety and smooth progress of the experiment.
Application Area
1,3-dibromopropane is also a chemical product. Its application field is quite wide. In the field of organic synthesis, it is often a key raw material. It can be used to make polyols, drug intermediates, etc. For example, to make some insect repellent drugs, 1,3-dibromopropane can be used as a starting material, and after various reactions, the required active ingredients can be obtained.
Furthermore, in materials science, it also has its place. It can be used to make special polymer materials, giving materials special properties, such as enhancing their stability and flame retardancy. In the fine chemical industry, it is an important substance for the synthesis of special fragrances and additives. In many fields of chemical industry, it plays an indispensable role in promoting the development of the chemical industry.
Research & Development
1,3-Dibromopropane is also an organic compound. I have been studying this for a long time. Its preparation method has gone through many complicated steps in the past, and the yield has not been ideal.
Today is different from the past, I have tried my best to improve its method. With a new type of catalyst, reacted at a suitable temperature and pressure, the yield has been significantly improved. And the product purity is also good, with very few impurities.
Looking at its application, in the field of pharmaceutical synthesis, it can be used as a key intermediate to help the research and development of new drugs; in materials science, or as a unique raw material, giving materials new properties.
I am convinced that with time, the research on 1,3-dibromopropane will be able to rise to a higher level, shining brightly in many fields, and contributing to the development of science in our generation.
Toxicity Research
I have heard that Fujin has the name 1,3 - Dibromopropane. I am very concerned about the research on its toxicity. The research on toxicity is the essence of people's livelihood and the environment.
Examine this chemical carefully, it may have potential harm. After many tests, it can be known that it may cause various reactions in organisms. Looking at the experience of animals, ingestion of this agent may cause damage to organs, especially liver and kidney. And it may disturb the metabolism of living things and disrupt their physiological order.
Also consider the environment. If this thing escapes from the outside, it is afraid of sewage and soil, and it will harm living things. Aquatic people may bear the brunt of the population change. Therefore, the study of toxicity cannot be slowed down. It is necessary to study its nature in detail, clarify the depth of its harm, and the way of transmission, so as to avoid disasters, protect the safety of all living beings, and protect the tranquility of the environment.
Future Prospects
1, 3 - Dibromopropane, organic compounds are also. Looking at its chemical properties, it has unique properties. In the field of chemical industry, it has a wide range of uses. Although it has been useful today, the future prospects are also promising.
Our research hopes that it can open up new paths in the way of pharmaceutical synthesis. With its structural characteristics, it can become a special drug to save patients from pain. And in the way of material science, it can help the generation of new materials, increase their properties, and expand their applications.
Thinking again, if the process is refined, the cost can be reduced and the output can be increased. In this way, it can be more widely distributed in the city and benefit all industries. On the road to the future, we should take science and technology as the wing to fully develop its potential, contribute to the progress of the world, and create unfinished business, so as to look forward to the future.
Frequently Asked Questions
What are the main uses of 1,3-dibromopropane?
1,3-dibromopropane is an important raw material for organic synthesis. It has a wide range of uses and is often used as an intermediate for the synthesis of many drugs in the field of medicine. For example, when preparing some antibacterial and anti-inflammatory drugs, 1,3-dibromopropane can participate in key reaction steps and assist in the construction of pharmaceutical active ingredients through a series of chemical transformations.
In the field of materials science, it also plays an important role. It can be used to prepare polymer materials with special properties, such as some polymers with excellent flame retardant properties. By polymerizing with other monomers, its structural units are introduced into the polymer backbone to impart specific properties to the material.
Furthermore, in the synthesis of pesticides, 1,3-dibromopropane also plays a role. In the synthesis path of some pesticides, it is necessary to use this as the starting material and through multi-step reactions to create pesticide products with insecticidal, weeding and other effects.
It is frequently used as an alkylation reagent in the field of organic synthetic chemistry. It can introduce propyl bromide structure fragments into organic molecules, expand the structural diversity of organic compounds, lay the foundation for further reactions and modifications, and help chemists create more new and unique organic compounds.
What are the physical properties of 1,3-dibromopropane?
1,3-Dibromopropane is an organic compound, and its physical properties are as follows:
Looking at it, 1,3-dibromopropane is a colorless to light yellow transparent liquid at room temperature. Its texture is clear, there are no suspended impurities, and it is visually clear. Smell it, it has a special irritating smell. This smell is relatively strong and can be keenly detected in the air. Smell it easily makes people feel uncomfortable.
In terms of its density, it is heavier than water, about 2.006g/cm ³. If it is placed in the same container as water, 1,3-dibromopropane will sink to the bottom of the water and be stratified due to density differences. Its melting point is very low, about -34 ° C. The normal temperature environment far exceeds its melting point, so it is liquid. The boiling point is 167 ° C, and a higher temperature is required to turn it into a gaseous state.
1,3-dibromopropane is slightly soluble in water, because water is a highly polar solvent, while 1,3-dibromopropane is relatively weak in polarity. According to the principle of "similar miscibility", the two are not miscible. However, it is soluble in most organic solvents, such as ethanol, ether, acetone, etc., and can be well miscible with these organic solvents to form a uniform and stable solution system. In addition, 1,3-dibromopropane has a certain volatility. In an open environment, it will gradually evaporate into the air. Its volatilization rate is affected by factors such as temperature and air circulation. The higher the temperature, the faster the air circulation, and the faster the volatilization.
Is 1,3-dibromopropane chemically stable?
The chemical properties of 1% 2C3-dibromopropane are still stable. In this compound, the bromine atom is connected to the carbon chain of propane to form a specific structure.
Under normal conditions, without special chemical reaction conditions, its molecular structure is not easy to change by itself. Although the carbon-bromine bond is not extremely difficult to break, it can maintain a relatively stable state at room temperature and pressure without suitable reactants, catalysts and other conditions.
Looking at the common chemical reaction environment, 1% 2C3-dibromopropane is less prone to spontaneous and violent chemical changes unless it encounters strong oxidizing agents, strong reducing agents, or specific excitation conditions such as high temperature and light. If stored in a normal room temperature environment and placed in a sealed container, it can maintain its original chemical composition and structure for a long time, and will not easily decompose or react with common components in the air such as oxygen and nitrogen.
However, it should be noted that if it is in a specific chemical reaction system, the chemical properties of 1% 2C3-dibromopropane will show an active state. Because it contains bromine atoms, it can participate in nucleophilic substitution reactions, etc. For example, when encountering nucleophilic reagents, bromine atoms can be replaced by nucleophilic groups, and then the chemical structure changes. However, this is driven by specific reaction conditions, not due to its own natural instability. Therefore, in general, 1% 2C3-dibromopropane is chemically stable under conventional conditions.
What is the preparation method of 1,3-dibromopropane?
The preparation method of 1% 2C3-dibromopropane is as follows:
First take an appropriate amount of propylene and place it in a special reactor. The kettle is pre-filled with an appropriate amount of hydrogen bromide gas, and the reaction environment needs to be carefully controlled to maintain a certain temperature and pressure range. This reaction is based on the principle of addition reaction. The double bond of propylene is active and easy to add to hydrogen bromide. At a suitable temperature and pressure, the double bond of propylene molecules is opened, the hydrogen atom of hydrogen bromide is combined with one of the unsaturated carbon atoms, and the bromine atom is connected to the other unsaturated carbon atom to form 1-bromopropane.
After 1-bromopropane is formed, remove it and move it into another reaction vessel. Then add an appropriate amount of liquid bromine to this container, and add a specific catalyst. The reaction that occurs in this step is a substitution reaction. Under the action of the catalyst, the bromine atom of the liquid bromine will replace the hydrogen atom at a specific location in the 1-bromopropane molecule, and finally generate 1% 2C3-dibromopropane through a series of complex reaction processes.
During the whole preparation process, many factors such as temperature, pressure, the proportion of reactants and the amount of catalyst have a crucial impact on the process of the reaction and the purity of the product. It is necessary to carefully control each link to obtain a higher purity of 1% 2C3-dibromopropane.
What are the precautions for the storage and transportation of 1,3-dibromopropane?
For 1% 2C3-dibromopropane, there are all kinds of things to pay attention to when storing and transporting it.
When hiding, it is the first warehouse. The warehouse should be cool, dry and well ventilated, and must not be close to fire and heat to prevent it from causing danger due to high temperature. This medicine is toxic and flammable, so it must be separated from oxidants, acids, etc. Do not mix, so as to avoid chemical reactions and lead to accidents. Furthermore, the storage place should be set up with obvious warning signs, so that everyone knows the risk and treats it with caution.
When transporting, you must also be extremely careful. The carrier must be professionally qualified, and the vehicles, boats and other transportation equipment used should be tight and free from leakage. When loading and unloading, the operator needs to wear protective equipment, such as gas masks, protective gloves, etc., to avoid direct contact with the drug body and cause damage to the body. During transportation, drive steadily to avoid bumps and sudden brakes, and prevent package leakage. And the transport equipment should follow the specified route, do not pass through densely populated places and busy cities, in case of leakage, it can reduce the harm.
All things that hide and transport 1% 2C3-dibromopropane are related to safety. Everyone must abide by the rules and not slack in the slightest, so as to ensure that everything goes smoothly and is safe.