P-Toluenesulfonic Acid(Anhydrous)

Lingxian Chemical

Specifications

HS Code	718021
Name	P-Toluenesulfonic Acid (Anhydrous)
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White crystalline solid
Odor	Odorless
Density	1.24 g/cm³
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Solubility In Water	Soluble
Acidity	Strong acid
Pka	-2.8
Flash Point	180 °C

Packing & Storage

Packing	1 kg of Anhydrous P - Toluenesulfonic Acid in sealed chemical - grade packaging.
Storage	P - Toluenesulfonic Acid (Anhydrous) should be stored in a cool, dry, well - ventilated area. Keep it away from sources of heat, ignition, and moisture as it can react with water. Store in tightly - sealed containers, preferably made of corrosion - resistant materials, to prevent contact with air and moisture that could degrade its quality.
Shipping	P - Toluenesulfonic Acid (Anhydrous) is shipped in well - sealed containers to prevent moisture absorption. It's handled with care due to its corrosive nature, and transported in accordance with chemical shipping regulations.

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General Information

Historical Development

P-Toluenesulfonic Acid (Anhydrous) is also an important compound of sulfonic acid. Its origin can be traced back to the study of chemistry. In the past, the properties of chemical compounds have been changed, and the field of synthesis has not been explored.
At the beginning of the study, it is still known that this sulfonic acid compound has some special properties. However, with the refinement of the technology, more and more companies have invested in research to clarify its function. It can be used as an efficient catalyst, which can promote the reaction and improve the recovery rate.
In the past month, the research of P-Toluenesulfonic Acid (Anhydrous) has not been in-depth, and its application has also been widely used. Since the initial basic research, many fields such as synthesis and chemical research have been indispensable, and their development and transformation have been expanded step by step.

Product Overview

"Product Overview of P-Toluenesulfonic Acid (Anhydrous) "
There is a product today, named P-Toluenesulfonic Acid (Anhydrous), which is an important product in the chemical industry. It is anhydrous p-toluenesulfonic acid, which is like a crystalline powder and has a nearly pure white color.
This product has strong acidity and is often used as a catalyst in the field of organic synthesis. It can promote many reactions, such as esterification, which increases the reaction speed and has good effect. And its stability is quite good, and it can last for a long time in conventional environments without changing its performance.
Because of its properties, it is widely used in the chemical industry. The preparation of many fine chemical products depends on this product. However, it should also be used with caution, because of its strong acidity, touch or hurt objects and people. When using it, it must be operated in accordance with regulations to ensure safety and security, so as to make the best use of it and contribute to the chemical industry.

Physical & Chemical Properties

P-Toluenesulfonic Acid (Anhydrous) is a commonly used reagent in organic synthesis. Its physical properties are white crystalline at room temperature, hygroscopic, and easily soluble in water, alcohols and ethers. Looking at its chemical properties, it has strong acidity and can be used as an acid catalyst. It plays a role in many organic reactions, such as esterification, which can effectively promote the formation of ester compounds. It also shows high catalytic performance in some dehydration reactions. Its acidity is derived from the strong ionization ability of sulfonic acid groups. Because of its specific physical and chemical properties, it is widely used in chemical, pharmaceutical and other fields. However, it is necessary to pay attention to its strong acidity when using it to prevent damage to equipment and human body.

Technical Specifications & Labeling

Nowadays, there is P - Toluenesulfonic Acid (Anhydrous), which is related to its technical specifications and identification (product parameters). Its quality must be pure, the color should be clean, and there should be no debris. Looking at its shape, it should be in a regular state, and there should be no weird shape. Its properties should be stable and immutable at all times.
Regarding its logo, it is necessary to specify the product name, characteristics, usage, preservation method, etc. Product parameters also need to be accurate, such as purity geometry, and a number of impurities, all of which should be clear. In this way, the right way to combine technical specifications and logos, users can use it according to this, so that there is no mistake, and all kinds of use can be smooth, without worries.

Preparation Method

The method of making P-Toluenesulfonic Acid (Anhydrous) is the key to raw materials and production process. Toluene and concentrated sulfuric acid are used as raw materials, and the two are heated to a suitable temperature in a specific reactor in an appropriate proportion. Toluene reacts with concentrated sulfuric acid, and after several steps, it is first sulfonated to form an intermediate, and then subjected to a series of refining steps. This reaction requires strict control of temperature, time and other conditions to ensure a smooth reaction. The product is then separated and purified, and impurities are removed by filtration, distillation and other means to obtain a pure product. In order to ensure quality, a strict monitoring mechanism is set up, and all links are checked in detail to make the prepared P-Toluenesulfonic Acid (Anhydrous) meet high-quality standards.

Chemical Reactions & Modifications

Taste the industry of chemical industry, in the change of things, there are endless wonders. In today's words, P-Toluenesulfonic Acid (Anhydrous), its application to chemistry, is worth exploring.
This acid is often a catalytic agent. In various reactions, it can change the rate of transformation and improve the mechanism. For example, the synthesis of esters used to require harsh procedures and took a long time. However, with the addition of this acid, the reaction speed is increased, the energy consumption is also reduced, and the yield is increased, which is of great benefit to the change of the reaction.
And its stability is good, easy to use, and it is used in industrial production, saving a lot of worries. However, it is also necessary to check its characteristics, because it has the common nature of acid, or it is associated with other things. When using it, we should be careful and study it in detail, so as to improve the environment and make good use of its energy, and add bricks and tiles to the prosperity of the chemical industry, so that the wonders of chemistry can benefit all people.

Synonyms & Product Names

P-Toluenesulfonic Acid (Anhydrous) of the same name
P-Toluenesulfonic Acid (Anhydrous), that is, water and toluenesulfonic acid. Its trade name is the same, and it is also well known in the chemical industry. This compound, in the field of synthesis, is often used as a catalyst. Due to its excellent activity, it can promote multiple reactions. Its namesake or trade name is not the same, but it refers to the chemical substance of this effect.
In the chemical research, it is very important to accurately distinguish the difference between this substance. By what name it is called, it is clear how it can be used in transportation and production, so as to make good use of it, maximize its effectiveness, and promote the next step of transformation.

Safety & Operational Standards

Safety and operating specifications for p-toluenesulfonic acid (anhydrous)
The use of p-toluenesulfonic acid (anhydrous) is widely used in various fields of chemistry. However, its properties are special, so safety and operating standards cannot be ignored.
In terms of its physical properties, p-toluenesulfonic acid (anhydrous) is white in color and crystalline. Although it is not a highly corrosive product, it is also irritating. Touching the skin can cause discomfort, or even a burning sensation. If it enters the eyes, it will be more harmful and can damage the tissues of the eyes. Therefore, protective gear is indispensable when operating. Protective clothing, protective goggles and gloves must be worn to prevent accidental contamination.
As for the operating environment, good ventilation should be required. Because p-toluenesulfonic acid (anhydrous) is dispersed in the air under specific conditions, if it accumulates too much, it can be inhaled into the human body and can harm the respiratory system. The operating table must be neat and orderly, and the utensils used should be cleaned immediately after use to prevent residue.
Furthermore, when storing, keep it in a cool and dry place, away from fire and heat sources. Do not store it in one place with strong oxidants and strong alkalis to prevent reactions and risk danger. When using, when taking utensils according to an accurate amount, do not do it at will.
Waste of p-toluenesulfonic acid (anhydrous) should not be discarded at will. It must be properly disposed of in accordance with relevant laws and regulations to prevent environmental pollution.
When handling this chemical, be sure to use caution and adhere to safety and operating practices in order to avoid its harm.

Application Area

P-Toluenesulfonic Acid (Anhydrous) is also an anhydrous p-toluenesulfonic acid. It has a wide range of uses and is often used as a catalyst in the field of organic synthesis. Such as the esterification reaction of alcohols and carboxylic acids, this acid can promote its speed and increase the rate of reaction. In etherification reactions, it can also play a role in the formation of ethers.
In the pharmaceutical industry, it can be a key auxiliary agent. When synthesizing certain pharmaceutical ingredients, its catalytic power allows the reaction to proceed according to the desired path, improving the yield and purity. Furthermore, in the coating industry, in the synthesis of certain resins, this acid is also used to adjust the reaction process and optimize the performance of the product. All of this shows the importance of anhydrous p-toluenesulfonic acid in many application fields.

Research & Development

Since modern times, chemical refinement, and all kinds of substances have been essential for scientific research. In today's words, P-Toluenesulfonic Acid (Anhydrous) is of great importance to researchers. Its liveliness is active, and it is often a key additive in various reactions.
We have studied it over the years to explore its subtlety. At the beginning, we only knew its surface, and we knew a little about the power of reaction catalysis. However, as time goes on, the deeper we study, the more we know that it can lead to the right track in complex reaction paths, and it can lead to extraordinary effects.
In past experiments, we often encountered difficulties, the reaction was slow, and the product was impure. Later, this agent was used, and the situation changed. With the advancement of research, it became clearer that it is widely applicable, and it is useful in organic synthesis and material preparation. Our generation should continue to delve into research, expand its new frontiers, hope to gain more benefits from scientific research, and promote its wide application, so as to benefit everyone and promote the progress of scientific research and the prosperity of various industries.

Toxicity Research

Toxicity of P - Toluenesulfonic Acid (Anhydrous), this substance is widely used in the chemical industry. After experiments, it may be potentially harmful to biological organisms. Contact with this substance may cause irritation to the skin and mucous membranes. If it is not carefully entered into the eyes, it can cause eye damage. Inhalation of its dust will also affect the respiratory tract and cause discomfort. Although it acts as a catalyst in the reaction, its efficacy is significant, but the toxicity cannot be underestimated. When studying the protective method in detail, when operating, protective clothing, goggles and masks must be worn to prevent contact with the human body. Use it in a well-ventilated place, and properly dispose of waste to prevent it from polluting the environment and harming all living beings.

Future Prospects

Wuguan P - Toluenesulfonic Acid (Anhydrous) is a unique product with a wide range of uses. In the field of organic synthesis, it is often a key additive, which can promote the smooth progress of many reactions and has significant effects.
Looking to the future, its development prospects are broad. With the development of science and technology, the requirements for its purity and performance will become more and more stringent. On the road of research and development, we should strive to improve the preparation process, reduce costs and improve efficiency, and make the quality better. And expand the scope of application, and find new uses in cutting-edge fields such as emerging materials and biomedicine. With time, P - Toluenesulfonic Acid (Anhydrous) will surely shine and contribute to the progress of various industries, showing a flourishing state.

Frequently Asked Questions

What are the main uses of P-Toluenesulfonic Acid (Anhydrous)?

P-toluenesulfonic acid (anhydrous) has a wide range of uses. In the field of organic synthesis, it is often a powerful protonic acid catalyst. It can help the esterification reaction to combine organic acids with alcohols to form ester compounds. In this process, P-toluenesulfonic acid can effectively increase the reaction rate, reduce the activation energy required for the reaction, and make the reaction more likely to occur.
In the alkylation reaction, it also plays a key role. It can catalyze the alkylation of olefins, halogenated hydrocarbons, etc. with aromatics, and introduce alkyl groups to produce a variety of organic compounds. For example, the preparation of aromatic compounds with special structures and properties is used in the pharmaceutical, fragrance, dye and other industries.
In the dehydration reaction, P-toluenesulfonic acid can promote the dehydration of alcohols to alkenes, or the dehydration of carbohydrates and other compounds to form furan derivatives. This dehydration efficiency provides an important path for organic synthesis, helping to construct unsaturated bonds and specific cyclic structures.
Furthermore, in some condensation reactions, such as the reaction of aldosterone and alcohol to form acetals and ketals, P-toluenesulfonic acid can be used as a catalyst to promote the condensation process and achieve the preparation of compounds with specific structures. Because of its high catalytic activity and good selectivity, it is widely used in the synthesis of fine chemical products and is an important tool for organic synthesis.

What are the Physical Properties of P-Toluenesulfonic Acid (Anhydrous)

P-toluenesulfonic acid (anhydrous) is a commonly used reagent in organic chemistry. Its physical properties are quite interesting and are described below.
P-toluenesulfonic acid (anhydrous) appears as a white crystalline state at room temperature and pressure, like a fine powder, which looks dry and clean. Its texture is relatively delicate and smooth to the touch. This material is hygroscopic and can slowly absorb water vapor when placed in the air. Therefore, when stored, it should be sealed to prevent moisture from dissolving.
In terms of its melting point, it is about 103-105 ° C. When the temperature rises to the melting point, p-toluenesulfonic acid (anhydrous) melts from a solid state to a liquid state, and this phase transition process is quite clear. Its boiling point is quite high, about 140 ° C (2.67kPa). The high boiling point indicates that the intermolecular force is strong, and more energy is required to vaporize it.
p-toluenesulfonic acid (anhydrous) has good solubility in water and can be miscible with water in a certain proportion. When it dissolves, or accompanied by changes in heat, the solution is acidic. In organic solvents, such as ethanol and acetone, it also has a certain solubility, but the degree of solubility varies depending on the nature of the solvent.
Its density is about 1.24 g/cm ³, which is slightly higher than that of water. This density characteristic makes it stratified according to density differences in some mixed systems, which affects the separation and purification operations.
The vapor pressure of p-toluenesulfonic acid (anhydrous) is low, and the volatilization is not significant at room temperature. However, when the temperature rises, the vapor pressure also increases, and the volatilization rate accelerates. At this time, attention should be paid to ventilation protection to prevent the harm of harmful steam.
From the above physical properties, it can be seen that p-toluenesulfonic acid (anhydrous) is widely used in chemical experiments and industrial production due to its unique physical properties. It can play an important role in organic synthesis, catalytic reactions and other fields.

P-Toluenesulfonic Acid (Anhydrous) What to pay attention to when storing

P-toluenesulfonic acid (anhydrous) is a commonly used reagent in organic synthesis. When storing, be sure to pay attention to many key points.
First, moisture protection is the most important. This substance is highly hygroscopic, and once it is damp, its purity and activity will be damaged. Therefore, it should be stored in a dry place, and the packaging must be tightly sealed. If placed in a humid environment, moisture absorption may cause changes in its own properties, so that it cannot achieve the desired effect in the reaction.
Second, the temperature also needs to be carefully controlled. It should be stored in a cool place, away from heat sources and open flames. Because it encounters hot topics, it may be at risk of decomposition, and the decomposition products may be dangerous. Excessive temperature may also accelerate its reaction with packaging materials, which in turn affects their quality.
Third, avoid contact with incompatible materials. P-toluenesulfonic acid (anhydrous) is acidic and should be kept away from alkalis, strong oxidants, etc. If it comes into contact with it, it may suddenly react violently, causing serious accidents such as fire and explosion. Alkaline substances such as sodium hydroxide will quickly neutralize when they meet, and strong oxidants will mix with it, or cause uncontrollable oxidation reactions.
Fourth, the choice of packaging materials should not be ignored. Corrosion-resistant packaging, such as glass bottles or specific plastic containers, should be used. Ordinary metal containers are easily corroded by it, causing packaging damage, which in turn leaks, endangering safety. When storing P-toluenesulfonic acid (anhydrous), all-round attention should be paid to moisture prevention, temperature control, avoidance of incompatible substances, and appropriate packaging to ensure its stability and safe use.

What is the preparation method of P-Toluenesulfonic Acid (Anhydrous)

To prepare p-toluenesulfonic acid (anhydrous), the method is as follows:
First take an appropriate amount of toluene and put it in the reaction kettle. Concentrated sulfuric acid is used as a sulfonating agent, slowly drop in, stir at the same time, and control the temperature within a certain range. This is because the sulfonation reaction is exothermic, and if the temperature is too high, the side reaction will produce, resulting in impure product. Drop and maintain the reaction for a period of time to make the reaction sufficient.
After the reaction is completed, the product contains p-toluenesulfonic acid and impurities. The unreacted toluene can be removed by distillation first. However, if the product is still in water or still contains water, further treatment is required to obtain anhydrous.
The technique of vacuum distillation is often used to reduce the boiling point of water and make it escape. And when operating, pay attention to the After reduced pressure distillation, pure anhydrous p-toluenesulfonic acid can be obtained.
There are also those who react with toluene and chlorosulfonic acid. Chlorosulfonic acid has strong sulfonation ability and violent reaction. During operation, toluene is slowly added to chlorosulfonic acid, vigorously stirred and cooled in a cold bath to prevent the reaction from going out of control. After the reaction, the generated hydrogen chloride gas is first removed, and then separated and purified to obtain anhydrous p-toluenesulfonic acid. However, in this process, hydrogen chloride is corrosive, and the tail gas needs to be properly treated to meet the requirements of environmental protection.

What are the safety precautions when using P-Toluenesulfonic Acid (Anhydrous)

P-toluenesulfonic acid (anhydrous) is a strong acidic compound. When using it, many safety precautions must be kept in mind.
First, protective equipment should be worn properly. Because it is highly corrosive, it can seriously damage the skin and eyes. Before starting the operation, you must wear protective clothing, protective gloves and goggles to prevent accidental contact. If the skin or eyes are accidentally contaminated, you should immediately rinse with plenty of water. If the situation is serious, you need to seek medical attention as soon as possible.
Second, the operating environment should be well ventilated. The smell of this substance may irritate the respiratory tract. When used in poorly ventilated areas, it is easy to cause cough, asthma and other uncomfortable symptoms. Therefore, the operation should be carried out in a fume hood to ensure smooth indoor air circulation.
Third, storage should also be cautious. It should be stored in a dry, cool and ventilated place, away from fire and heat sources. Because of its flammability, in case of open flame or hot topic, there is a risk of combustion and explosion. And it should be stored separately from oxidants, alkalis, etc., to avoid dangerous reactions caused by mixed storage.
Fourth, the use process must be careful. When measuring, use suitable tools to avoid spilling. If there is any spill, it needs to be cleaned with suitable materials immediately to prevent its spread from causing greater harm.
Fifth, the chemical properties should be well known. When participating in a chemical reaction, it should be fully understood that its reaction characteristics should be carried out in strict accordance with the operating procedures to prevent safety accidents caused by uncontrolled reaction.
In short, when using P-toluenesulfonic acid (anhydrous), every step of the operation must be treated with caution and strict safety procedures must be followed to ensure the safety of personnel and the smooth progress of experiments and production.