As a leading 3-Fluorobenzene-1,2-Diol 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 3-fluorobenzene-1,2-diol?
3-Bromo-1,2-dichloroethane has a wide range of main uses.
In the field of organic synthesis, this is a key intermediate. For example, in the preparation of specific drugs, 3-bromo-1,2-dichloroethane can be converted into key structural fragments of drug molecules through a series of chemical reactions. Because of the presence of both bromine and chlorine atoms in the molecule, these halogen atoms are extremely active and can react with many nucleophiles to build more complex organic molecular structures.
In materials science, it can be used to synthesize special polymer materials. By polymerizing with other monomers, polymers can give unique properties, such as enhancing the flame retardancy of materials. This is because halogen atoms can capture free radicals during combustion, thereby inhibiting the spread of combustion reactions.
In the field of agriculture, 3-bromo-1,2-dichloroethane has been used as a soil fumigant. It can effectively kill pests, pathogens and weed seeds in the soil, create a good soil environment for the growth of crops, and then improve the yield and quality of crops. However, due to its potential harm to the environment, its use has been restricted in some areas.
In chemical research, 3-bromo-1,2-dichloroethane is often used as a model compound to help researchers delve deeper into the chemical reaction mechanism of halogenated hydrocarbons. Because of its relatively simple and representative structure, it can provide important reference and reference for the study of complex halogenated hydrocarbon reactions.
What are the physical properties of 3-fluorobenzene-1,2-diol?
3-Bromo-1,2-dichloropropane is a colorless to light yellow liquid with the following physical properties:
1. ** Properties **: It appears as a colorless to light yellow liquid state at room temperature and pressure, with a relatively clear appearance.
2. ** Odor **: It has a chloroform-like odor, which is unique and has a certain irritation.
3. ** Density **: The density is relatively large, greater than the density of water. If mixed with water, it will sink to the bottom.
4. ** Solubility **: Slightly soluble in water, but can be miscible with most organic solvents such as ethanol, ether, acetone, etc. This is due to its molecular structure having similar chemical properties to organic solvents, following the principle of "similar miscibility".
5. ** Boiling point **: The boiling point is within a certain range, and the specific value depends on factors such as environmental pressure. Generally, it has a relatively fixed boiling point under a specific pressure. This property allows it to be treated by distillation and other means according to the difference in boiling point during separation and purification.
6. ** Melting point **: There is a specific melting point. Below the melting point temperature, the substance will change from liquid to solid.
7. Stability: At room temperature and pressure without special external factors, the substance has certain stability, but at high temperatures, open flames, or in contact with some highly active substances, chemical reactions may occur, which may affect the stability.
Is 3-fluorobenzene-1,2-diol chemically stable?
The chemical properties of 3-bromo-1,2-dichloroethane are still stable. In this compound, both bromine and chlorine atoms are attached to the carbon chain, and their chemical bonds give it specific stability.
From the perspective of structure, although the carbon-bromine bond and the carbon-chlorine bond have a certain polarity, the interaction stabilizes the overall structure of the molecule. Under normal circumstances, if there is no specific external conditions to excite, it is not prone to spontaneous and significant changes.
At room temperature and pressure, it is liquid, has a certain tolerance to heat, and is not easy to decompose due to ordinary temperature fluctuations. In general chemical environments, if there are no strong oxidizing agents, strong reducing agents or specific catalysts, it reacts slowly with surrounding substances.
However, when exposed to high temperatures, strong light or specific catalysts, its stability will be affected. At high temperatures, carbon-halogen bonds may undergo homogeneous or heterogeneous cracking, leading to free radical reactions or ionic reactions. Strong light irradiation may also provide energy to prompt the detachment of halogen atoms and initiate a chain reaction. However, in general, under conventional laboratory and industrial storage and use conditions, 3-bromo-1,2-dichloroethane can maintain a relatively stable chemical state, and it is not easy to undergo violent chemical reactions and deterioration for no reason. This property makes it stable in many organic synthesis and chemical processes.
What are the synthesis methods of 3-fluorobenzene-1,2-diol?
3-Bromo-1,2-dichloroethane is an important intermediate in organic synthesis. The synthesis methods are as follows:
** 1. Ethylene addition method **
1. ** Addition of bromine and chlorine to ethylene **
Take an appropriate amount of ethylene gas and slowly introduce bromine and chlorine in a suitable reaction vessel under normal temperature and pressure and in the presence of a catalyst. The carbon-carbon double bond in the ethylene molecule will react with bromine and chlorine to form 3-bromo-1,2-dichloroethane. The chemical reaction equation is: $CH_2 = CH_2 + Br_2 + Cl_2\ longrightarrow BrCH_2CHClCl $. The reaction conditions of this method are relatively mild and the yield is quite high, but the purity of the raw materials is very high, and both bromine and chlorine are toxic gases. Special attention should be paid to safety protection during operation, and the exhaust gas must be properly handled.
2. ** Addition of hypobromic acid to vinyl chloride **
First prepare hypobromic acid, and then mix it with vinyl chloride. The carbon-carbon double bond in vinyl chloride will react with hypobromic acid to form 3-bromo-1,2-dichloroethane. The reaction process is roughly as follows: first prepare hypobromic acid ($HBrO $), then $CH_2 = CHCl + HBrO\ longrightarrow BrCH_2CH (OH) Cl $, and then through appropriate subsequent treatment such as dehydration, the final target product is obtained 3-bromo-1,2-dichloroethane. This method is slightly complicated, but the requirements for raw materials are relatively less stringent, and it is also used in some specific occasions.
** Di- and halogenated hydrocarbon substitution method **
1. ** 1,2-dichloroethane bromide **
takes 1,2-dichloroethane as the starting material and reacts with bromine under the conditions of light or initiator. The bromine atom will replace a hydrogen atom in the 1,2-dichloroethane molecule to generate 3-bromo-1,2-dichloroethane. The reaction equation can be written as: $CH_2ClCH_2Cl + Br_2\ xrightarrow [] {light or initiator} BrCH_2CHClCl + HBr $. The raw materials of this method are relatively easy to obtain, but various by-products may be produced during the reaction process, which makes it difficult to separate and purify the product. High-purity products need to be obtained by fine separation methods, such as distillation and extraction.
2. The dichloroethane of bromoethane allows bromoethane to react with chlorine under appropriate conditions. Chlorine gas dichloroethane can also generate 3-bromo-1,2-dichloroethane. This reaction also needs to control the reaction conditions and the ratio of reactants, otherwise it is easy to produce many side reactions, and the product composition is complex, which brings great challenges to the subsequent separation work. However, if the reaction process can be effectively controlled, it can be regarded as a feasible synthesis route.
What is the price of 3-fluorobenzene-1,2-diol in the market?
In today's market, the price of 3-1,2-dialdehyde in the river is made by the same reasons. Whether it floats or sinks, it can be covered in one word.
First, the supply and demand are high, and the need is high. If the world needs this 3-1,2-dialdehyde, and the amount produced by the workshop is small, it must be high. The price of the goods is scarce, and the demand is low and the supply is small. On the contrary, if the stock of this goods in the city is low, and the demand is small, the price must be low.
Second, the price of raw materials also affects it. 3-1,2-dialdehyde in the river, the need for raw materials is high. If the quality of raw materials is high, and the workshop can maintain its profits, it will increase the cost of 3-1,2-dialdehyde. On the contrary, the decline of raw materials, and the decline of its finished products.
Furthermore, the system of governance and the innovation of technology also have implications. If the government controls its cost, or increases its cost, it may increase. If the technology is innovated, the quantity will increase and the cost will decrease, and the price may be lower.
Near the factory, the cost of 3-1,2-dialdehyde in the city will probably float in the field of [X] to [X]. However, the market is not difficult, and its cost will also be reduced. Those who work for this purpose in commerce must check the market conditions and understand the reasons for it, so as to obtain its benefits and avoid its harm.
