is an organic compound with the chemical formula C14H10O4 and CAS 482-05-3. It is a white or slightly yellow powder, sometimes in the form of flakes or crystals. Acids are slightly soluble in water, but easily soluble in organic solvents such as ethanol, ether, and acetone. It is an organic acid with acidity that can react with bases to form salts. It can also be used for synthesizing other organic compounds, electroplating, optical materials, and other fields. In summary, as an important organic compound, dibenzoic acid has broad application prospects in multiple fields. However, it should be noted that due to its toxicity and potential harm to human health and the environment, appropriate protective measures should be taken and relevant safety regulations and operating procedures should be followed when using benzoic acid. At the same time, with the continuous development of science and technology, the use of benzoic acid is also constantly expanding and deepening, requiring continuous research and exploration of new application fields.
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(1) The reaction of C6H5ONa+3Cl+HeCl → C6H4COOH+NaCl+2H2O is a displacement reaction, in which the phenoxy anion in sodium phenolate is replaced with the chlorine atom in chloroform to produce dibenzoic acid and sodium chloride.
(2) If sulfuric acid is used as an acidic reagent, the reaction equation is: C6H5ONa+3Cl+H2SO4 → C6H4COOH+NaCl+SO2+2H2O. This reaction is similar to the first reaction, in which the hydrogen ions in sulfuric acid are replaced with the phenoxy anion in sodium phenolate to generate dibenzoic acid and water. At the same time, it will release sulfur dioxide gas.
1. Prepare reagents and equipment
2. Prepare reaction solution
(1) Add a certain amount of sodium phenolate to the reaction vessel, then add an appropriate amount of chloroform and stir evenly until the sodium phenolate is completely dissolved in chloroform. This step is the process of preparing the reaction solution, and it is necessary to ensure that sodium phenolate is completely dissolved in chloroform for subsequent reactions.
(2) Slowly add acidic reagents, such as hydrochloric acid or sulfuric acid, and adjust the pH value of the reaction solution to acidity. This step is to adjust the acidity of the reaction solution in order to facilitate the reaction. It should be noted that the addition rate of acidic reagents should be slow to avoid rapid changes in the pH value of the reaction solution, which may affect the reaction effect.
(3) Heat the mixture to a certain temperature, usually between 70-80 degree , to promote the reaction. This step involves heating the reaction mixture to increase the reaction rate and yield. It should be noted that the heating temperature should not be too high to avoid causing side reactions and reducing the purity of the product.
3. React
(1) Under heating and stirring conditions, maintain the reaction solution at a certain temperature for reaction. This step involves reacting the reaction mixture at a certain temperature and acidity to generate dibenzoic acid. During the reaction process, attention should be paid to controlling temperature and acidity to ensure the normal progress of the reaction and the quality of the product.
(2) Observing the reaction process, heating and stirring can be stopped when the precipitate no longer forms or the rate of formation slows down significantly. This step is the process of determining whether the reaction is complete, by observing the formation of precipitates to determine whether the reaction can be concluded. If the sediment no longer forms or the rate of formation slows down significantly, it indicates that the reaction has been completed and heating and stirring can be stopped.
4. Separation and purification
(1) Cool the reaction mixture to room temperature and then filter out the precipitate. Filter paper can be used to filter and collect sediment. This step is the process of separating the precipitation of benzoic acid, and separating the precipitate from the solution through filtration for further processing.
(2) Dry the washed precipitate in a drying equipment to obtain a dry benzoic acid product. This step is the process of drying the precipitate, removing moisture through drying equipment to obtain a dry benzoic acid product. It should be noted that during the drying process, temperature and humidity should be controlled to avoid product deterioration or damage.
1. Cleaning and surface treatment agents: Diphenyl formic acid plays an important role in the manufacturing of cleaning and surface treatment agents. It can combine with other substances to form efficient and environmentally friendly cleaning and surface treatment agents, and is widely used in the cleaning and treatment of materials such as metals, glass, ceramics, etc.
In terms of metal surface treatment, dibenzoic acid can be used for passivation treatment. By reacting with the metal surface to form a dense oxide film, the corrosion resistance of the metal can be effectively improved. This passivation treatment technology has a wide range of applications in the production and processing of metal products, such as anti-corrosion treatment of metal materials such as steel, aluminum, copper, etc.
2. Catalysts and promoters: Dibenzoic acid plays an important role as a catalyst and promoter in chemical reactions, effectively accelerating and regulating various chemical reactions. It has various catalytic properties and can be used as an oxidant, reducing agent, acid-base catalyst, etc. It is widely used in organic synthesis, inorganic synthesis, polymer polymerization and other chemical fields.
In addition, dibenzoic acid can also serve as an acid-base catalyst and promote certain organic reactions. It can catalyze organic reactions such as esterification, hydrolysis, and alcohol dehydration, improving reaction rate and selectivity. By using benzoic acid as an acid-base catalyst, the reaction temperature and pressure can be reduced, the reaction conditions can be simplified, and the purity and yield of the product can be improved.
In summary, dibenzoic acid has various catalytic properties in chemical reactions and can be used as an oxidant, reducing agent, acid-base catalyst, etc. It can effectively accelerate and regulate various chemical reactions, improve reaction rate and yield, and simplify the reaction process. Therefore, benzoic acid has broad application prospects in the chemical industry, pharmaceutical industry, and other fields, providing important technical support for the synthesis and production of various chemicals.