P-Carboxychlorobenzene
Linshang Chemical
HS Code |
722607 |
Name | P - Carboxychlorobenzene |
Molecular Formula | C7H5ClO2 |
Molar Mass | 156.57 g/mol |
Appearance | White to off - white solid |
Odor | Odorless or very faint odor |
Melting Point | 158 - 160 °C |
Boiling Point | 274 - 276 °C |
Solubility In Water | Slightly soluble |
Solubility In Organic Solvents | Soluble in ethanol, ether, etc. |
Density | 1.49 g/cm³ (approximate, solid state) |
Acidity Pka | 3.97 |
As an accredited P-Carboxychlorobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | P - carboxychlorobenzene: Packed in 50 - kg bags for convenient handling and storage. |
Storage | P - carboxychlorobenzene should be stored in a cool, dry, well - ventilated area, away from heat sources and ignition points. Keep it in a tightly - sealed container to prevent moisture and air exposure which could lead to degradation. Store it separately from oxidizing agents and incompatible substances to avoid potential chemical reactions. |
Shipping | P - carboxychlorobenzene, a chemical, is shipped in accordance with strict regulations. It's packaged securely in corrosion - resistant containers. Shipments are often via specialized carriers, ensuring safe transit to prevent any environmental or safety risks. |
Competitive P-Carboxychlorobenzene prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365006308 or mail to info@alchemist-chem.com.
We will respond to you as soon as possible.
Tel: +8615365006308
Email: info@alchemist-chem.com


As a leading P-Carboxychlorobenzene supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
In the dye industry, it can react with other compounds to generate dyes with specific colors and properties to meet the needs of different colors and fastness dyes in the textile, printing and dyeing industries.
In the field of pesticide manufacturing, the pesticides synthesized by p-chlorobenzoic acid have an efficient control effect on pests and provide strong support for the control of pests in agricultural production.
In addition, due to the presence of carboxyl groups and chlorine atoms in its structure, p-chlorobenzoic acid has also emerged in the field of materials science, which can be used to prepare polymer materials with special properties, such as improving the stability and solubility of materials. In short, p-chlorobenzoic acid plays an indispensable role in many important industrial fields due to its unique chemical properties, promoting the development and progress of various industries.
Looking at its shape, carboxyl chlorobenzene is white and delicate in texture at room temperature, like the first snow in winter, sprinkling on the world. Place it on the nose and smell it lightly, its gas is slight, but if you stay on the side for a long time, you can also feel its special smell, neither fragrant nor smelly, unique.
On its melting point, it is about a specific value. When the temperature rises to this time, this substance will be converted into a solid liquid, like ice melting under the spring sun. The boiling point is also determined. When it reaches this high temperature, the liquid will melt and rise.
Carboxyl chlorobenzene has poor solubility in water, just like oil floats in water, and the two are difficult to blend. However, in organic solvents, such as ethanol and ether, it can be better miscible, just like fish get water, and they blend seamlessly.
Its density is greater than that of water. If it is thrown into water, it will sink immediately, like a stone falling into an abyss. And it has a certain stability. Under normal conditions, it is not easy to react violently. When encountering strong acids and alkalis, it can also interact with them, showing its activity.
In addition, the conductivity of carboxychlorobenzene is extremely weak, and it is difficult to generate free-moving ions in solution due to its non-ionic compounds, so it is difficult to conduct electricity, just like a blocked circuit, and current is difficult to pass.
All these physical properties are of great significance in many fields such as chemical industry and medicine, and are well known and well used by practitioners in related industries.
p-chlorobenzoic acid, which is normally white crystalline powder. The melting point is quite high, about 239-241 ° C. At this temperature, the crystal form changes square. The boiling point is also high, about 275 ° C. It begins to vaporize at high temperature.
From the chemical structure theory, the benzene ring has a conjugated system, and the electron cloud is uniformly distributed and the structure is stable. Although the carboxyl group has a certain activity and can participate in acid-base reactions, the electronic effect of the benzene ring and the steric resistance make its activity limited. The chlorine atom attached to the benzene ring has an impact on the electron cloud of the benzene ring due to its electronegativity
Under common conditions, p-chlorobenzoic acid is not easy to react spontaneously. For example, in a dry air environment at room temperature and pressure, it can be stored for a long time and does not react with common gases such as oxygen and nitrogen. When exposed to water, its carboxyl group is slightly soluble, but only a small amount of ionization, and the overall structure is still stable.
However, it should be noted that under specific conditions, such as high temperature, strong acid and strong base, and the presence of catalysts, its stability will change. When there is a suitable catalyst at high temperature, the carboxyl group can undergo esterification reaction; in the presence of strong reducing agents, benzene rings or chlorine atoms can be reduced. However, such specific conditions are uncommon, and in conventional environments, the physical properties of p-chlorobenzoic acid are stable.
The first oxidation method using p-chlorotoluene as raw material. This is a common process, with p-chlorotoluene as the starting reactant, and methyl is oxidized to carboxyl groups by the action of an oxidizing agent. Commonly used oxidizing agents include air, oxygen, potassium permanganate, etc.
If air or oxygen is used as the oxidizing agent, it usually needs to be reacted in the presence of a catalyst. Catalysts are mostly salts of variable-valent metals such as cobalt and manganese, such as cobalt acetate, manganese acetate, etc. Bromides such as tetrabromoethane are often used as cocatalysts. The reaction is generally carried out in a liquid phase system at high temperature and pressure. For example, p-chlorotoluene, a catalyst and an appropriate amount of solvent (such as glacial acetic acid) are added to the reactor, air or oxygen is introduced, and the temperature is raised to 150-200 ° C, and the pressure is maintained at about 1-3 MPa. Under these conditions, the methyl of p-chlorotoluene is gradually oxidized to carboxyl groups to form p-chlorobenzoic acid. The advantages of this process are that the raw materials are easily available, the cost is low, and it conforms to the concept of green chemistry, because air or oxygen are clean oxidants. However, there are also disadvantages of harsh reaction conditions and high equipment requirements, and the reaction process needs to be strictly controlled to prevent side reactions such as excessive oxidation.
If potassium permanganate is used as an oxidant, the reaction conditions are relatively mild and can be carried out in aqueous solution at room temperature and pressure. Add p-chlorotoluene and potassium permanganate to water in a certain proportion, and add an appropriate amount of phase transfer catalyst (such as quaternary ammonium salts) to promote mass transfer between the organic phase and the aqueous phase. During the reaction, potassium permanganate will oxidize p-chlorotoluene and reduce itself to manganese dioxide. After the reaction is completed, the manganese dioxide precipitate is removed by filtration, and then the filtrate is acidified to precipitate p-chlorobenzoic acid. This method is easy to operate, but the cost of potassium permanganate is high, and a large amount of manganese-containing waste is produced. The subsequent treatment is complicated and has a certain pressure on the environment.
In addition, p-chlorobenzoic acid is also prepared by hydrolysis method using p-chloroben Under acidic or alkaline conditions, p-chlorobenzonitrile undergoes a hydrolysis reaction, and the nitrile group is converted into a carboxyl group. Strong acids such as sulfuric acid are commonly used for acidic hydrolysis, and strong bases such as sodium hydroxide are used for alkaline hydrolysis. During acidic hydrolysis, p-chlorobenzonitrile is mixed with sulfuric acid and heated to reflux. After the reaction is completed, it is cooled and diluted, and p-chlorobenzoic acid is precipitated. After alkaline hydrolysis, acidification is required to convert the generated carboxylate into p-chlorobenzoic acid. The advantages of this process are high reaction selectivity and good product purity. However, chlorobenzonitrile is more toxic, and raw material storage and use need
First, the supply and demand of the city are very high. If there are many people who want it, and the supply is small, the price will rise; on the contrary, if the supply exceeds the demand, the price may fall. Second, the place of production is also the main factor. Different origins, due to the convenience of raw materials and the difference in labor, have different costs and prices. Third, the quality of the quality can also affect its price. The price of a good product is often higher than that of an ordinary one.
Looking at the market conditions over the years, the price of p-chlorobenzoic acid may fluctuate between tens of yuan and hundreds of yuan per kilogram. However, this is only an approximate number, and the actual price should be based on the current market conditions, purchase quantity and supply. To know the exact price, you can consult the chemical raw material supplier, the market's trading platform, or relevant industry information to get a timely and accurate price.
In the field of organic synthesis, it is an important raw material and intermediate. It can be used to produce many drugs. For example, some antipyretic and analgesic agents, in their molecular structure, the groups derived from p-chlorobenzoic acid play a crucial role in the process of drug efficacy, which can help the drug to accurately combine with the target, thereby regulating human physiology and relieving pain.
In the dye industry, p-chlorobenzoic acid is also indispensable. With it as a starting material, through a series of delicate chemical reactions, dyes with bright color and good fastness can be prepared. These dyes are used for fabric dyeing, which can make the fabric appear rich in color, and after many washes and light, the color will not fade for a long time.
In the creation of pesticides, p-chlorobenzoic acid also has a place. The pesticides synthesized from it have the characteristics of high efficiency and low toxicity, which can effectively control crop pests and diseases, ensure the thriving growth of crops, improve food production, and protect agricultural harvests.
In the field of materials science, p-chlorobenzoic acid can be integrated into polymer materials after special treatment and reaction. In this way, it can improve the properties of materials, such as enhancing their stability, corrosion resistance, etc., so that the materials can still maintain good performance under more severe environmental conditions, and are used in many industries such as construction and electronics. In short, p-chlorobenzoic acid plays an important role in the chemical industry, providing indispensable support for the development of various industries.
** 1. Properties **
This substance is white to light yellow monoclinic crystals at room temperature. Looking at it, it is in a regular state, just like a delicate object carved by nature, exuding a quiet beauty.
** Second, melting point and boiling point **
The melting point is quite high, reaching 239-241 ° C. It is like a stable posture after a lot of tempering, and it still sticks to its own form under high temperature. The boiling point is 275.4 ° C. In a higher temperature environment, China shows a trend of transitioning to a gaseous state. If the potential is hidden in the depths, it needs specific conditions to be excited.
** III. Solubility **
Slightly soluble in water, only a very small part can be dissolved in water, just like a reserved guest, keeping a certain distance from water. However, it is easily soluble in ethanol, ether, acetone and other organic solvents, as if finding like-minded friends, and quickly blends.
** Fourth, density **
The density is about 1.544g/cm ³. Compared with common substances, it has its own specific weight, which lays the foundation for its performance in various environments.
** Fifth, stability **
is quite stable under normal conditions, such as a calm person, and it is not easily disturbed by the outside world to change its own properties. However, in case of open flames and hot topics, it will also burn, just like throwing boulders into a calm lake, triggering a violent reaction. Contact with strong oxidants may also trigger chemical reactions, showing its active side in a specific chemical environment.
The preparation of p-chlorobenzoic acid is often based on p-chlorotoluene as the starting material. In the kettle, an appropriate amount of p-chlorotoluene is added, and a suitable solvent is re-injected, such as glacial acetic acid. This solvent can provide a suitable environment for the reaction and help the material to mix evenly. Coupled with catalysts, such as cobalt salt and manganese salt, these two can promote the speed of the reaction and increase the rate of yield.
Then, oxygen is introduced into the kettle to make it easy to encounter the material in the shape of bubbling. When the temperature is raised to an appropriate degree, about one hundred and twenty-thirty degrees Celsius, this temperature can start the reaction, so that p-chlorotoluene and oxygen phase. In the meantime, the fire is very important, the temperature is high and the side should be generated, and the temperature should be slow and difficult to advance.
When the reaction is completed, the contents of the kettle gradually change, and p-chlorotoluene gradually turns into p-chlorobenzoic acid. After the reaction is completed, the contents of the cold kettle, p-chlorobenzoic acid in the form of crystals, settle at the bottom of the kettle. Then use a filter to divide its liquid and solid to obtain a crude product.
The crude product is not pure and still contains impurities, so it needs to be refined. By the method of recrystallization in water or organic solvent, the impurities are left in the liquid, the pure product is recombined, and the color white matter is pure p-chlorobenzoic acid. In this way, the preparation process of p-chlorobenzoic acid is described in ancient French, although it is simple, it is also essential.
First, the price of raw materials is the key. The production of p-chlorobenzoic acid depends on its raw materials. If the price of raw materials surges, its production will increase, and the price will also rise. On the contrary, if the price of raw materials falls, its price may fall.
Second, the situation of supply and demand affects its price. If there are many people in the market, and the supply is small, the price will rise; if the supply exceeds the demand and the market has a lot of goods, the price may drop.
Furthermore, the manufacturing process is also related to the production capacity. If the manufacturing process is refined and the production capacity is greatly increased, the cost can be reduced, and the price may be favorable. However, the manufacturing process is difficult, the production capacity is hindered, and the price may be affected by it.
In addition, the competition of the city and the regulations of the policy can make the price change. If the competition in the same industry is intense, the price may be adjusted to attract customers; if the policy is changed, the price can also fluctuate.
If you want to know the exact price, you need to consult the merchant of chemical materials, or check the platform of the chemical market, before you can get the current near-real price. The price of the cover is not a fixed number, and it often fluctuates in the market due to the above reasons.
The place where it is hidden should be cool and dry, avoiding direct sunlight. Exposure to sunlight may cause its chemical properties to change and damage its quality. If it is hot and humid in the heat, it is easy to react and damage its quality.
And it must be kept away from fires and heat sources. This is because carboxyl chlorobenzene is flammable, and it is dangerous near fire. The spark is too small, or it may cause a prairie fire, endangering storage and surrounding safety.
Furthermore, it should be stored separately from oxidants and alkalis. The oxidizing agent is stronger than oxidation, and when encountering carboxyl chlorobenzene, it may become dramatic, causing a hot topic and the risk of explosion; when alkali encounters it, it also reacts, damaging its structure and losing its nature.
The reservoir must also be carefully selected, and it must be well airtight to prevent it from escaping. If it escapes outside, it will pollute the environment and harm life. If it is used improperly, or it will cause corrosion and leakage, it will be a big disaster.
The well-ventilated warehouse makes the air flow smooth. If the turbid gas accumulates, the concentration will gradually increase, increasing the risk of combustion and explosion. Good ventilation can reduce hidden dangers and ensure the safety of the storage warehouse.
Abide by these regulations and store according to regulations to protect the quality of carboxyl chlorobenzene without safety risks. Storage matters are as heavy as Mount Tai and should not be ignored at all.

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