1-Bromo-2,3-Dichloro-5-Ethylbenzene
Linshang Chemical
HS Code |
115441 |
Chemical Formula | C8H7BrCl2 |
Molar Mass | 255.95 g/mol |
Appearance | likely a colorless to pale - yellow liquid |
Boiling Point | approx. 240 - 260 °C (estimated, based on similar halogenated benzenes) |
Density | higher than water (due to halogen atoms, estimated around 1.6 - 1.8 g/cm³) |
Solubility In Water | very low, insoluble (hydrophobic due to non - polar benzene ring and halogen substitution) |
Solubility In Organic Solvents | soluble in common organic solvents like dichloromethane, chloroform, toluene |
Vapor Pressure | low at room temperature |
Odor | characteristic, pungent odor typical of halogenated aromatic compounds |
As an accredited 1-Bromo-2,3-Dichloro-5-Ethylbenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | 100 g of 1 - bromo - 2,3 - dichloro - 5 - ethylbenzene in a sealed, labeled bottle. |
Storage | 1 - Bromo - 2,3 - dichloro - 5 - ethylbenzene should be stored in a cool, dry, well - ventilated area, away from heat sources and open flames. Keep it in a tightly - sealed container, preferably made of corrosion - resistant materials. Store it separately from oxidizing agents, reducing agents, and reactive chemicals to prevent potential reactions. |
Shipping | 1 - bromo - 2,3 - dichloro - 5 - ethylbenzene is shipped in sealed, corrosion - resistant containers. Shipment follows strict hazardous chemical regulations, ensuring proper labeling, secure packaging, and transportation by approved carriers. |
Competitive 1-Bromo-2,3-Dichloro-5-Ethylbenzene prices that fit your budget—flexible terms and customized quotes for every order.
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As a leading 1-Bromo-2,3-Dichloro-5-Ethylbenzene supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
"Benzene" indicates that it has the basic structure of a benzene ring, which is a hexamembered ring with a stable structure containing conjugated double bonds.
"1-bromine", the epibromine atom is connected to the No. 1 carbon position of the benzene ring. The so-called carbon position number is usually numbered by the carbon attached to a specific atom or group as No. 1, and it is numbered in a certain direction.
"2,3-dichloro", that is, the No. 2 and No. 3 carbon positions are each connected to a chlorine atom.
"5-B", indicating that the No. 5 carbon position is connected to ethyl, and ethyl is ethane to remove the remaining group of a hydrogen atom, written as - C ² H.
In summary, the chemical structure of 1-bromo-2,3-dichloro-5-ethylbenzene is based on a benzene ring as the core, with No. 1 carbon connected to bromine atoms, No. 2 and No. 3 carbon connected to chlorine atoms, and No. 5 carbon connected to ethyl. Its structural abbreviation can be written as: Br - C H < unk > (Cl) ³ - C < unk > H < unk > (where Br is connected to carbon 1 of the benzene ring, two Cl are connected to carbon 2 and 3 respectively, and - C < unk > H < unk > is connected to carbon 5). In this way, the chemical structure of this compound is clear.
First of all, its appearance, under room temperature and pressure, is mostly colorless to light yellow liquid, clear and has a special luster, like a faint light flicker, and it looks quite strange.
Second and boiling point, the boiling point of this compound is quite high, about 250 to 270 degrees Celsius. Such a high boiling point is due to the strong force between molecules. The presence of bromine, chlorine and other halogen atoms in the cover molecule enhances the polarity of the molecule and increases the attractive force between them. To convert it from liquid to gaseous state, more energy needs to be supplied, and the boiling point remains high.
In addition, the melting point is usually in the range of minus 20 to minus 10 degrees Celsius. The value of the melting point reflects the difficulty of the conversion between the solid and liquid states of the substance. The lower melting point indicates that under a relatively mild low temperature environment, the compound can melt from solid state to liquid state, which shows that its solid state structure is not very stable, and the arrangement between molecules is not very close and orderly.
The density of 1 + -bromo-2,3-dichloro-5-ethylbenzene is greater than that of water, about 1.6-1.7 g/cm3. When mixed with water, it can be seen that it sinks to the bottom of the water, because its own molecules are denser and contain more mass per unit volume than water.
In terms of solubility, the compound is insoluble in water because its molecular polarity is quite different from that of water. According to the principle of "similarity and compatibility", the two are not easy to mix with each other. However, it is soluble in many organic solvents, such as ether, chloroform, and carbon tetrachloride. In organic solvents, the molecules of 1 + -bromo-2,3-dichloro-5-ethylbenzene can form a more suitable interaction with the molecules of the organic solvent, so that they can be uniformly dispersed and show good solubility.
In addition, 1 + -bromo-2,3-dichloro-5-ethylbenzene has a certain volatility and can be slowly dissipated in the air, emitting a special smell. Although this smell is not strong and pungent, it also has a unique charm, and the smell of its special chemical composition can be recognized.
First, in the field of organic synthesis, it is often an important raw material. It can be prepared by many chemical reactions. Other organic compounds with specific structures and functions can be prepared. For example, through nucleophilic substitution reactions, its bromine atoms and chlorine atoms can be replaced by other functional groups to build more complex molecular structures. This is of great significance in the fields of medicinal chemistry and materials science. When drugs are developed, it may be necessary to use this as a starting material and synthesize compounds with specific pharmacological activities through multi-step reactions.
Second, it also has its uses in material synthesis. It can participate in polymerization reactions and other processes, contributing to the synthesis of polymer materials with special properties. By ingeniously designing the reaction path, 1-bromo-2,3-dichloro-5-ethylbenzene is introduced into the polymer chain as a structural unit, giving the material unique physical and chemical properties, such as changing the solubility, thermal stability, and optical properties of the material.
Third, it is a commonly used model compound in chemical research. Scientists can gain in-depth insight into the mechanism and laws of organic chemical reactions by studying their reaction characteristics and structural changes. By exploring its behavior under different reaction conditions, general principles are summarized to provide reference and guidance for the research and synthesis of other organic compounds.
All of these are common uses of 1-bromo-2,3-dichloro-5-ethylbenzene and play an indispensable role in many fields of chemistry.
First, benzene can be used as the starting material, and ethyl can be introduced into the alkylation reaction to obtain ethylbenzene. This step requires a suitable halogenated ethane and benzene, catalyzed by Lewis acid such as anhydrous aluminum trichloride, at a suitable temperature and reaction time. After ethylbenzene is generated, a halogenation reaction is carried out. First, bromine atoms are introduced into the benzene ring under the catalysis of iron powder or iron tribromide to generate ortho or para-bromoethylbenzene, because ethyl is an ortho-para-localization group. After separation and purification of 1-bromo-5-ethylbenzene, two chlorine atoms are introduced into the remaining active check point of the benzene ring in chlorine gas, in the presence of light or free radical initiator, to obtain 1 + -bromo-2,3-dichloro-5-ethylbenzene.
Second, other benzene derivatives can also be started. If p-chloroethylbenzene is used as a raw material, the electrophilic substitution reaction occurs with bromine first, and under the action of a suitable catalyst, bromine atoms are introduced into the benzene ring to generate 1-bromo-4-chloro-5-ethylbenzene, and then chlorine gas is further halogenated under specific conditions, so that a chlorine atom is introduced into the benzene ring, and the final target product is obtained.
Or starting from m-dichlorobenzene, ethyl is introduced into the halogenated ethane by Fu-g alkylation reaction, and then substitution reaction occurs with bromine under the action of the catalyst to obtain 1 + -bromo-2,3-dichloro-5-ethylbenzene. Each method has its own advantages and disadvantages, and the appropriate preparation method should be selected according to the actual situation, such as the availability of raw materials, the difficulty of reaction conditions, and the purity requirements of the product.
Its bromine atom has high activity and can participate in nucleophilic substitution reactions. The nucleophilic tester can attack this bromine atom, causing bromine ions to leave and form new compounds. This reaction condition may vary depending on the nature of the nucleophilic reagent. If alcohols are used as nucleophilic reagents, substitution can occur under basic conditions, and bromine is replaced by alkoxy groups.
Furthermore, although the activity of the two chlorine atoms on the benzene ring is slightly lower than that of the bromine atom, they can also participate in the reaction under specific conditions. For example, under conditions such as strong nucleophilic reagents and high temperatures, chlorine atoms may be substituted.
And ethyl is attached to the benzene ring, which has an impact on the electron cloud distribution of the benzene ring. Ethyl is the donator group, which can increase the electron cloud density of the ortho and para-site of the benzene ring. Therefore, in the electrophilic substitution reaction, the electrophilic reagents are more inclined to attack the ortho and para-site.
And this compound can participate in the coupling reaction under the catalysis of metals because it contains multiple halogen atoms. For example, under the catalysis of palladium, it is coupled with other halogen-containing compounds or alkenyl borates to form more complex organic molecular structures.
Its spatial structure and the interaction of electronic effects enable 1-bromo-2,3-dichloro-5-ethylbenzene to exhibit unique properties in various chemical reactions, providing diverse possibilities for organic synthesis chemistry. Reaction routes can be cleverly designed to prepare many organic compounds with specific functions.

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