P-Toluene Sulphonic Acid

Lingxian Chemical

Specifications

HS Code	521906
Name	p-Toluene Sulphonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White to off - white crystalline solid
Odor	Odorless
Solubility In Water	Soluble
Melting Point	103 - 105 °C
Boiling Point	Decomposes
Density	1.24 g/cm³
Acidity	Strongly acidic
Ph In Solution	Low (acidic pH)

Packing & Storage

Packing	500 - gram package of P - Toluene Sulphonic Acid in a sealed, corrosion - resistant bag.
Storage	P - Toluene Sulphonic Acid should be stored in a cool, dry place, away from heat sources and open flames due to its potential flammability. Keep it in a well - ventilated area, isolated from incompatible substances like strong oxidizers. Store it in tightly sealed containers, preferably in a corrosion - resistant material, to prevent moisture absorption and potential degradation.
Shipping	P - Toluene Sulphonic Acid is shipped in tightly - sealed, corrosion - resistant containers. Care is taken to prevent exposure to moisture and incompatible substances. Shipments comply with relevant chemical transportation regulations for safe transit.

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General Information

Historical Development

"The History of P-Toluene Sulphonic Acid"
Ancient chemists, in the exploration of things, have always been enthusiastic, P-Toluene Sulphonic Acid has also been studied for several generations. At the beginning, scholars occasionally came across this object in the midst of various chemical phenomena, and felt that it was unique. At that time, the technology was not refined, and the research was difficult, and only one or two of its characteristics were known.
And later generations, the technology was progressive, and the analysis of P-Toluene Sulphonic Acid was more detailed. Chemists have worked hard to study its structure and understand the reason for its reaction. As a result, this substance gradually shows its energy in various chemical fields, either as a catalyst or as a synthetic aid. It has been widely used, from the micro-test in the laboratory to the large-scale production in industry. Looking at its history, it is actually a witness to the evolution of chemistry. It gathers the efforts of scholars and is still an indispensable item in the chemical community today.

Product Overview

P-Toluene Sulphonic Acid is an important compound in organic chemistry. Its color is often white crystalline and highly acidic. This substance is widely used in the chemical industry and is often used as a catalyst. In many organic synthesis reactions, it can significantly accelerate the reaction process and improve the reaction efficiency.
The preparation method is mostly obtained by the sulfonation reaction of toluene. This preparation process requires careful control of reaction conditions, such as temperature, reactant ratio, etc., to obtain high-purity products.
Its properties are stable, and it will change in case of water or humid air. When storing and using, pay attention to maintaining a dry environment to prevent its deterioration. Overall, P-Toluene Sulphonic Acid occupies an important position in the chemical industry due to its unique chemical properties and wide range of uses.

Physical & Chemical Properties

"Physical properties of P-Toluene Sulphonic Acid"
P-Toluene Sulphonic Acid, that is, toluene sulfonic acid, is a chemical compound. Its physical properties are often white crystalline, absorbent, and easily soluble in water and alcohol ether. Melting at 106-107 ° C, this characteristic makes it possible to be solid or molten at a specific temperature, which is advantageous for different properties and applications.
Its chemical activity, as an acid, can catalyze the reaction of polyacids. For example, in esterification reaction, it can effectively catalyze the formation of carboxylic acids and alcohols to ester, accelerate the reaction process, and improve the reaction rate. Because of its acidic nature, it can neutralize and react, and generate a phase. The physical properties of this compound make it play an important role in the fields of synthesis, catalysis, etc., and promote the next step in chemical engineering.

Technical Specifications & Labeling

Nowadays, there are chemical products called P-Toluene Sulphonic Acid (P-Toluene Sulphonic Acid). Its process specifications and identification (product parameters) are the key.
The preparation of p-toluene sulfonic acid requires a rigorous method. The material ratio is accurate, the reaction conditions must also be appropriate, and the temperature and duration must be fixed. In this way, high-quality products can be prepared.
In its identification, the product parameters are detailed. The amount of content is related to the quality, and it must be accurately measured. Appearance color is also an important characteristic, pure and colorless or yellowish is appropriate. The content of impurities is strictly controlled in trace amounts, so as not to affect the performance. On the packaging, the logo is clear, and the product name, specification and batch are clear for inspection. According to this process specification and marking, the quality of p-toluenesulfonic acid can be guaranteed, and it can be suitable for various applications.

Preparation Method

The method of making P-Toluene Sulphonic Acid is as follows: Prepare the raw materials first, toluene and sulfuric acid are also. Pour the toluene into the kettle, slowly inject the sulfuric acid, control its temperature, and do not make it too intense. The two phases are combined and the reaction starts. At the beginning, the temperature gradually rises, so you need to be careful.
When the reaction occurs, the process is knotted. Go in sequence, don't be impatient. Wait for it to finish, and the product is initially formed. However, it still needs to be refined to improve its purity. Distillation and crystallization can be used to remove impurities and store sperm.
And a mechanism for temperature control is set to keep it stable. And a method of circulation is also set up to promote the recombination of raw materials and increase their yield. In this way, P-Toluene Sulphonic Acid can obtain excellent products for various uses.

Chemical Reactions & Modifications

P-Toluene Sulphonic Acid is a commonly used reagent in organic synthesis. It exhibits unique chemical properties and reactivity in many chemical reactions.
Looking at its chemical changes, in the esterification reaction, it is often used as a catalyst to accelerate the combination of alcohol and carboxylic acid, so that the reaction can be carried out efficiently. This acid can provide protons to help the formation of reaction intermediates, which greatly improves the reaction rate.
As for its modification, it can be achieved by modifying the molecular structure. For example, the introduction of specific substituents can adjust its acidic strength and steric resistance. In this way, its catalytic performance can be precisely adjusted according to the specific reaction needs, making the reaction more selective and efficient. Chemists continue to explore in the laboratory, leveraging their in-depth understanding and ingenious improvement of P-Toluene Sulphonic Acid to open up new paths in the field of organic synthesis, enabling it to play a key role in more complex reactions.

Synonyms & Product Names

"P-Toluene Sulphonic Acid of the same name and trade name"
P-Toluene Sulphonic Acid, that is, p-toluene sulfonic acid, which is also known as many other names in the industry. It is often called 4-methylbenzenesulfonic acid, which is named after its chemical structure. "4-methyl" indicates that methyl is based on the position of the benzene ring.
Another name is toluene-4-sulfonic acid, which is also based on its structure, emphasizing the relative position of the sulfonic acid group and methyl on the benzene ring.
In the category of trade names, the abbreviation of "PTSA" is common. This is a simple way of calling in the industry and is widely used in various chemical transactions and production links.
In addition, it is also called "p-toluene sulfonic acid monohydrate", which is because the substance often exists and is used in the form of crystalline water with a molecule, so it gets this name. Although the names are different, they all refer to P-Toluene Sulphonic Acid, an important chemical product, which plays a key role in chemical synthesis, catalytic reactions and other fields.

Safety & Operational Standards

P - Toluene Sulphonic Acid is also a chemical object. In our field of chemical research, its safe operation is of paramount importance.
This object is corrosive, and its skin and mucous membranes are extremely harmful. Therefore, when handling it, it is necessary to add some equipment, such as anti-corrosive gloves and eyes, and it is appropriate to wear anti-corrosive clothing to protect it from the body.
The place where the operation is carried out is good. If it is carried out in a dense place, it will not only harm the body and breathing, but also cause disease. It is usually placed in the way of transportation, and it is also often used to ensure its efficacy.
Also, the existence of P - Toluene Sulphonic Acid also has a certain effect. It should not be mixed with the original material, such as oil, in order to prevent the generation of chemical reactions and cause damage.
When used, the dosage must be precisely measured, according to the needs and reasons of anti-pollution. The method of operation is also familiar, do not overflow. If there is any leakage, immediately clean it up in an appropriate way. If it is fixed, use utensils; if it is liquid, use adsorbed objects to collect it, and properly dispose of it, do not overflow.
Therefore, in the safe operation of P-Toluene Sulphonic Acid, we, the researchers, are committed to the heart, and do our best to ensure our own safety, safety, and environmental protection.

Application Area

P-Toluene Sulphonic Acid is a commonly used agent in the chemical industry. Its application field is quite wide. In the field of organic synthesis, it is often used as a catalyst. For example, in esterification reactions, it can promote the combination of carboxylic acids and alcohols, improve the reaction rate and yield, and make the esterification process smoother. In alkylation reactions, it can also play a key role in helping alkyl groups to smoothly introduce target molecules and achieve the construction of organic compounds.
In some drug synthesis steps, this acid can ingeniously participate in the preparation of key intermediates, contributing to drug development and production. And in the field of resin synthesis, it can regulate the reaction and optimize the performance of resins, making it more advantageous in industrial and daily necessities manufacturing. In short, P-Toluene Sulphonic Acid plays an indispensable role in many application fields of chemical industry and contributes greatly to the development of chemical industry.

Research & Development

There is a chemical substance today, called P-Toluene Sulphonic Acid, which is of great importance to our research.
We study this substance, observe its properties, explore its quality, and seek to understand its rationale, so as to help the way of development. It may be of great use in various industrial things. After many experiments, we have carefully observed its changes and known the rules of its reaction.
Although the road of research is difficult, we are determined. We hope to know all the details so that this substance can be used well. With time, we hope to make significant progress in related fields, contribute to development, and develop new scenery in chemical industry, so that this research can be successful and beneficial to everyone.

Toxicity Research

The nature of taste and smell is related to use and safety. Today's research on the toxicity of P-Toluene Sulphonic Acid should not be done carelessly.
Examine the classics in detail and visit all parties. P-Toluene Sulphonic Acid has certain corrosive and irritating properties. If the human body accidentally touches it, it will cause burns, redness and swelling on the skin; if it enters the eyes, it can damage vision and cause eye diseases. If it inhales its volatile gas, or causes respiratory discomfort, cough and asthma, and even endanger the lungs.
The intensity of toxicity also depends on the concentration and the duration of contact. Therefore, in the place of production and use, strict protective measures must be taken. Practitioners must wear special protective clothing, goggles and masks to prevent accidental exposure to drugs. And the place of work should be well ventilated so that the poisonous gas can dissipate quickly.
In short, studying the toxicity of this substance is essential for the safety of the living and the promotion of the industry.

Future Prospects

Nowadays, P-Toluene Sulphonic Acid has already emerged in the field of chemical industry. Although it has available capabilities now, the future prospects are really promising.
We imagine that in the way of synthetic chemistry, it may open up new paths for more delicate reactions. With its unique nature, it may make many complicated synthesis easier, improve yield, and reduce the generation of impurities.
Furthermore, in the field of materials science, P-Toluene Sulphonic Acid may be able to incarnate key additives to improve the quality of materials. It makes significant progress in the properties of materials such as strength and stability.
As for the future, science and technology are constantly evolving and exploring. It will surely shine in more unknown environments, bringing endless new changes to our lives and production. This is our generation of chemical researchers, and we are eagerly looking forward to its future development.

Frequently Asked Questions

What are the Physical Properties of P-Toluene Sulphonic Acid?

P-Toluene Sulphonic Acid (P-Toluene Sulphonic Acid) is one of the most important organic compounds. Its physical properties are rich and diverse, let me tell you in detail.
Looking at its morphology, under room temperature and pressure, P-Toluene Sulphonic Acid is often in the state of colorless needle-like or flake-like crystals, and its appearance is crystal clear, which is quite impressive.
As for the smell, this substance often emits a special smell. Although it is not pungent or intolerable, it also has a unique smell and can be distinguished.
When it comes to solubility, P-Toluene Sulfonic Acid exhibits good solubility in water and is easily dissolved into it to form a uniform solution. Not only that, it also has considerable solubility in organic solvents such as alcohols and ethers, which makes it better able to play a role in many organic reaction systems and participate in the process of various chemical reactions.
In addition to its melting point, the melting point of P-toluenesulfonic acid is between 106 ° C and 107 ° C. This temperature condition is crucial for defining its physical state transition. When the temperature gradually rises to near the melting point, the originally solid P-toluenesulfonic acid slowly melts into a liquid state. This physical change needs to be precisely controlled in chemical production and related experimental operations to ensure the smooth progress of the reaction.
In terms of boiling point, its boiling point is usually in a higher temperature range, specifically at about 140 ° C (2.67kPa), the liquid P-toluenesulfonic acid will transform into a gaseous state. This boiling point data is of great significance when it comes to separation and purification operations such as distillation, and it is related to whether the substance can be effectively separated and purified.
In addition, P-toluenesulfonic acid has a certain degree of hygroscopicity. In humid environments, it is easy to absorb moisture in the air. This property may affect its storage and use. Therefore, moisture-proof measures are often taken during storage to maintain the stability of its properties.
In summary, the physical properties of P-toluenesulfonic acid are diverse, and its applications in chemical, pharmaceutical and other fields depend on the accurate mastery and rational application of its physical properties.

P-Toluene Sulphonic Acid is commonly used in which chemical reactions

P-Toluene Sulphonic Acid (P-Toluene Sulphonic Acid), this substance has a wide range of uses in many chemical reactions.
First, it is often seen in esterification reactions. The esterification reaction involves the chemical change of alcohol and carboxylic acid to form esters and water. P-toluene sulfonic acid can act as a high-efficiency catalyst, which can increase the reaction rate and make the reaction proceed more smoothly. Due to its strong acidity, the acid can effectively polarize the carbonyl group of carboxylic acids, making it easier for alcohols to launch nucleophilic attacks on it, thereby accelerating the formation of esters.
Furthermore, it is also often used in alkylation reactions. Alkylation reactions are intended to introduce alkyl groups into organic molecules. P-toluenesulfonic acid can help activate the reactants, making it easier for the alkylating reagents to react with the substrates, so as to achieve the purpose of forming carbon-carbon bonds or carbon-heterobonds, thereby synthesizing many complex organic compounds.
In addition, in some hydrolysis reactions, P-toluenesulfonic acid can also play a role. The hydrolysis reaction is the decomposition reaction between the compound and water. This acid can provide protons to promote the reaction in the direction of hydrolysis, promote the breaking of specific chemical bonds, and realize the hydrolytic transformation of the compound.
And in some condensation reactions, P-toluenesulfonic acid can also exhibit its catalytic activity. Condensation reactions involve two or more molecules being reacted to remove small molecules (such as water, alcohols, etc.) and connect them to form larger molecules. This acid can catalyze such reactions, promoting condensation between molecules and generating more complex products.
In short, P-toluenesulfonic acid, with its unique acidity and catalytic properties, plays an important role in various organic synthesis chemistry reactions, promoting the efficient preparation and transformation of many organic compounds.

What are the Preparation Methods of P-Toluene Sulphonic Acid

There are several ways to make p-toluenesulfonic acid.
First, toluene is used as raw material and can be obtained by sulfonation reaction. Toluene is slowly injected into sulfuric acid, and at a suitable temperature, the two are combined. The concentration of sulfuric acid and the reaction temperature are both critical. If the concentration of sulfuric acid is too high, the reaction will be too fast, and side reactions may increase; if the concentration is too low, the reaction will not be sufficient. Temperature also needs to be precisely controlled. Generally, within a certain temperature range, the reaction can proceed smoothly to generate p-toluenesulfonic acid. In this process, it is necessary to pay attention to the progress of the reaction, and often monitor with specific detection methods to make the reaction achieve the desired effect.
Second, p-toluenesulfonyl chloride is used as the raw material. p-Toluenesulfonyl chloride is co-heated with water or an alkaline aqueous solution. After hydrolysis, p-toluenesulfonic acid can be obtained. This reaction requires control of the reaction conditions, such as temperature, reaction time, and the proportion of reactants. The temperature is moderate, so that the hydrolysis reaction can occur smoothly. If the time is too short, the hydrolysis will be incomplete, too long or the product will deteriorate. In alkaline environments, the hydrolysis rate may vary, so the amount of alkali should also be considered.
Third, p-cresol is used as the raw material. The reaction of p-cresol and sulfuric acid under suitable conditions can produce p-toluenesulfonic acid. In this way, the purity of p-cresol and the properties of sulfuric acid affect the product. P-cresol is impure or impurities are introduced; the properties of sulfuric In the reaction process, stirring, temperature control and other operations are all related to the quality and yield of the product. Each of these methods has its own advantages and disadvantages. In actual preparation, the choice should be made carefully according to factors such as raw material availability, cost and product requirements.

What are the main uses of P-Toluene Sulphonic Acid?

P-toluenesulfonic acid has a wide range of uses. First, in the field of organic synthesis, it often acts as a catalyst. It is acidic and can promote the progress of many organic reactions, such as esterification. In the process of esterification, this acid can make carboxylic acids and alcohols more easily react, improve the reaction rate and yield, just like the good generals of ancient times, leading the soldiers to forge ahead in order to achieve victory.
Furthermore, in the pharmaceutical and chemical industry, it also has important uses. In some drug synthesis steps, P-toluenesulfonic acid can assist in the construction of molecular structures, just like a craftsman carving beautiful jade to make it precisely formed. Among many drugs, its shadow is common, and it is a key help for pharmaceuticals.
In the dye industry, this acid is also indispensable. It can participate in the process of dye synthesis, affecting the chromaticity, stability and other characteristics of dyes. Just like a painter's color matching, through its preparation, you can get brilliant and lasting colors.
In the production of resins, P-toluenesulfonic acid can regulate the polymerization reaction of resins. Through its catalysis, resins can have the required properties, such as hardness and toughness, just like skilled craftsmen control the heat, making the utensils perfect.
In addition, in the paint industry, it can be used as an auxiliary agent. It can improve the leveling, drying speed and other properties of the coating, so that the coating is applied more evenly to the surface of the object and dries more quickly, just like retouching the seal, making it more perfect.
In summary, P-toluenesulfonic acid has important uses in organic synthesis, pharmaceutical and chemical industry, dye industry, resin production and coating industry, etc., and has an extraordinary contribution to the development of industry.

What should be paid attention to when storing and using P-Toluene Sulphonic Acid

P-toluenesulfonic acid is also an organic compound. When storing and using it, many matters need to be paid attention to.
First words storage. This substance is corrosive to a certain extent, when stored in a cool, dry and well-ventilated place. Do not mix with oxidants, alkalis, etc., to prevent violent chemical reactions. Because P-toluenesulfonic acid encounters oxidants, it may cause the risk of combustion and explosion; in case of alkalis, it is easy to neutralize and damage its own properties. Storage containers should be made of corrosion-resistant materials, such as glass, specific plastics, etc., and should be tightly sealed to prevent moisture and air from invading and deteriorating. The temperature of the warehouse should also be properly controlled. It should not be too high or too low. Generally, it can be maintained in the conventional room temperature range. Excessive temperature may exacerbate the volatilization of substances, and too low temperature or crystallization will affect its subsequent use.
Second talk about use. When using, protective measures are essential. Be sure to wear appropriate protective equipment, such as protective glasses, to protect your eyes from its splash damage; acid and alkali-resistant gloves to prevent contact with the skin of your hands; protective clothing is also indispensable to protect your body from its erosion. Operate in a well-ventilated environment, preferably in a fume hood, so that volatile gases can be discharged in time to prevent their accumulation in the air and endanger the health of the operator. If you accidentally come into contact with the skin, you should immediately rinse with a large amount of flowing water, and then decide whether to seek medical attention according to the severity of the injury; if it splashes into the eye, you need to rinse with a large amount of water immediately and seek medical treatment quickly. During use, when preparing the solution, follow the correct order. Usually add the acid slowly to the water and stir constantly. Do not reverse the order, otherwise it will be dangerous due to severe heat release or splashing of the solution. After the operation is completed, the utensils used must be cleaned in time and stored properly to avoid corrosion of the residual P-toluenesulfonic acid to the utensils.