P-Aminobenzene Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	147504
Chemical Formula	C6H7NO3S
Molar Mass	173.19 g/mol
Appearance	White crystals or powder
Odor	Odorless
Solubility In Water	Soluble
Solubility In Organic Solvents	Insoluble in most organic solvents
Melting Point	288 °C
Boiling Point	Decomposes before boiling
Density	1.485 g/cm³
Ph Aqueous Solution	Acidic
Stability	Stable under normal conditions

Packing & Storage

Packing	1 kg of P - Aminobenzene Sulfonic Acid packaged in a sealed plastic bag.
Storage	P - Aminobenzene Sulfonic Acid should be stored in a cool, dry, well - ventilated area, away from heat sources and ignition sources. Keep it in tightly - sealed containers to prevent moisture absorption and contact with air, which could potentially lead to degradation. Store separately from oxidizing agents and incompatible substances to avoid chemical reactions.
Shipping	P - Aminobenzene Sulfonic Acid should be shipped in tightly - sealed containers, safeguarded from moisture and heat. It must comply with regulations for transporting chemical substances, ensuring proper labeling and secure packaging to prevent leakage.

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General Information

Historical Development

P - Aminobenzene Sulfonic Acid, that is, p-aminobenzene sulfonic acid, has long been traced. In the past, chemical sages studied the physical properties and unremitting exploration of this acid. At first, the understanding was still shallow, and only some of its characteristics were known.
However, with the passage of time, scholars' research deepened. In the laboratory, repeated trials were conducted to observe the changes in its reaction and to understand its chemical properties. From the initial ignorance, to the gradual ability to master its synthesis, the application of this acid has gradually expanded.
Or used in the industry of dyeing and weaving, adding luster to fabrics; or in the field of medicine, helping to cure diseases. Its development process is like the stars gradually gathering, shining brightly, starting from the end of the micro, and being used by the world. It is a shining pearl in the long river of chemical development, witnessing the study of the past and opening up a new path for future applications.

Product Overview

p-Aminobenzenesulfonic acid is an important product of chemistry. It is in the shape of a white crystalline powder and has stable properties.
The preparation method of this substance is mostly obtained by the sulfonation reaction of aniline. During the reaction, temperature control and reagent dosage are required to achieve good results.
p-Aminobenzenesulfonic acid has a wide range of uses. In the dye industry, it is a key intermediate for the synthesis of a variety of azo dyes, which makes the dyes rich in color and have good fastness. In the field of medicine, it also plays an important role and can be used as a raw material for the synthesis of some drugs, which is helpful for the treatment of diseases. In analytical chemistry, it can be used as a raw material for the preparation of acid In conclusion, p-aminobenzenesulfonic acid plays an indispensable role in many fields such as chemical industry and medicine, and its research and application are of great significance.

Physical & Chemical Properties

P - Aminobenzene Sulfonic Acid is also a matter of transformation. Its properties are both physical and chemical.
In terms of physicality, under normal conditions, the white crystal is like a powder, and it is dispersed on the ground. Its melting is specific, and it is difficult to distinguish it at a certain degree. Solubility also depends on its physical properties. It is soluble in some solutions, and soluble in others. This property can be used for fractionation.
and chemical properties, because it contains special bases, therefore it has the property of acid. It can be used to generate neutralization and reaction, and generate phases. And its benzene properties enable it to replace aromatic compounds under certain conditions. Such properties depend on the field of chemical synthesis, the wide range of uses, and the importance of chemical research and engineering.

Technical Specifications & Labeling

"Technical Specifications and Labeling (Product Parameters) of P-Aminobenzenesulfonic Acid"
The P-Aminobenzenesulfonic Acid is an important chemical product. Its technical specifications are related to the preparation method. First, the raw materials need to be selected, the ratio is accurate, such as benzenesulfonic acid and ammonia water, the amount is moderate, and the reaction is smooth. During the reaction, the temperature should be controlled to an appropriate extent, and it should not be overheated or overcooled, otherwise the quality will be inferior.
As for the label, the first name is "P-Aminobenzenesulfonic Acid", which describes its molecular formula and molecular weight to show its characteristics. The purity of the standard indicates its purity, which is related And note the method of storage, avoid moisture, avoid heat, and prevent qualitative change. Product parameters are detailed, such as melting point and boiling point, which are the criteria for users to check, so as to ensure that this product is used properly and has full efficacy.

Preparation Method

The method of preparing P-Aminobenzene Sulfonic Acid is related to the raw materials and production process, reaction steps and catalytic mechanism. The raw materials are often benzenesulfonic acid and ammonia water. First, benzenesulfonic acid and ammonia water are mixed in a specific ratio, which is the initial step.
In the reaction step, it is essential to control the temperature and pressure. Put the mixture in a suitable reactor, gradually heat up to a specific degree, and stabilize its pressure. During the reaction, the molecules interact, and the groups of benzenesulfonic acid combine with the components in ammonia water.
The catalytic mechanism is promoted by a specific catalyst, which increases the reaction rate and reduces the energy required for the reaction. The precise action of the catalyst makes the reaction efficient and less impurities. In this way, through a series of steps, P-Aminobenzene Sulfonic Acid can be obtained. The exquisite craftsmanship is controlled and coordinated in all aspects to achieve the purpose of high-quality production.

Chemical Reactions & Modifications

P - Aminobenzene Sulfonic Acid is also a chemical compound. Its reverse modification is the weight of our research.
The reverse of this compound involves the properties of the amino sulfonic acid group in the compound. The amino group has the property of donator, and the sulfonic acid group is the property of absorber, and the two affect each other, causing its reverse properties.
To modify the properties, the synthesis method can be borrowed. For example, by using the appropriate solution, substitution, addition, etc., and changing its properties. Or integrating and reversing components, degrees, catalysis, etc., to obtain the desired properties.
The study of this transformation and anti-modification is of great significance for materials, materials, etc., which can promote its further development.

Synonyms & Product Names

P - Aminobenzene Sulfonic Acid, that is, p-aminobenzene sulfonic acid, is widely used in the chemical industry. Its synonyms and trade names are really the key to research.
p-aminobenzene sulfonic acid, also known as sulfonic acid. In ancient books, it may be called aniline sulfonic acid. This varies according to different periods, regions and industry habits. Its trade names also vary depending on manufacturers and markets. It may be named "pure sulfonic acid" to highlight purity; it may also be called "superior aniline sulfonic acid" to emphasize quality.
To study chemical products, it is essential to clarify synonyms and trade names. It can help researchers accurately identify, avoid confusion in literature review and experimental material procurement, and ensure smooth research. In production and trade, it can also avoid unsmooth transactions due to name ambiguity. Therefore, detailed investigation of the synonyms and trade names of P-Aminobenzene Sulfonic Acid is an indispensable part of chemical research.

Safety & Operational Standards

Safety and Handling Practice for p-Aminobenzenesulfonic Acid
P-Aminobenzenesulfonic Acid is a common chemical in chemical research. During its research and operation, many safety and handling practices must be followed with caution.
In terms of safety, this substance is irritating to a certain extent. If it accidentally touches the skin, rinse with plenty of water as soon as possible. If there is any discomfort, seek medical attention immediately. If it splashes into the eye, it is necessary to open the eyelids immediately, rinse with flowing water or normal saline, and seek medical treatment quickly. If the powder is inhaled or causes respiratory irritation, it is recommended to operate in a well-ventilated place. If necessary, wear suitable respiratory protective equipment.
In terms of operating specifications, when weighing, it is necessary to operate accurately, and the equipment used should be clean and dry to ensure accurate weighing values. When dissolving p-aminobenzenesulfonic acid, a suitable solvent should be selected according to its properties, and the temperature and stirring speed should be controlled to promote its full dissolution. During the reaction process, the reaction conditions, such as temperature, pH, etc., should be strictly controlled due to subtle differences, or the reaction results may be very different. After the experiment is completed, the remaining p-aminobenzenesulfonic acid and related wastes must be sorted according to regulations and should not be discarded at will to avoid polluting the environment.
Anyone who participates in the research of p-aminobenzenesulfonic acid should be well aware of the essentials of safety and operating standards, and treat every step strictly in order to ensure the smooth operation of the experiment and protect the safety of themselves and the environment.

Application Area

P-Aminobenzene Sulfonic Acid (P-Aminobenzene Sulfonic Acid) is useful in various fields. In the genus of printing and dyeing, it can be used as a dyeing aid, which can make the color uniform and firm, and the color of the fabric is fresh for a long time. In the field of medicine, it is also indispensable. It is the base material for the synthesis of various medicines, which is related to health and has outstanding effects. In the process of chemical analysis, it can be used as a benchmark agent to make the measurement accurate and the data correct. It has extraordinary capabilities in industrial synthesis, scientific research and exploration, and even people's livelihood needs. It has a wide range of uses and far-reaching impact. It is a key material in chemical substances. In many application fields, it shines and is indispensable.

Research & Development

Yu Taste is dedicated to the research of P - Aminobenzene Sulfonic Acid. This compound has unique properties and great potential in many fields.
Initial research, exhaustive search of ancient books, and hands-on experimental tools, studying its characteristics day and night. After repeated trials, the law of its reaction is clear, and the method of synthesis is known. Although the process is difficult, every small success is very happy.
As for development, this compound has broad prospects in industry, medicine, etc. In industry, it can be used as a raw material for dyes to add color and luster; on top of medicine, it may have unique curative effects, which need to be further explored. I will work tirelessly to expand its application and contribute my modest efforts to the academic and industry, so as to promote the rapid development of this compound.

Toxicity Research

P-Aminobenzene Sulfonic Acid is also a chemical substance. In the study of its toxicity, we should be careful.
First observe its chemical properties to understand its reaction to different environments. Then study the way it enters the biological body, or the mouth, or the skin, or the breath. Enter the body, explore its distribution and replacement.

Also test its retention and degradation in the environment to prevent it from being tired and unhealthy. Therefore, the toxicity study of P-Aminobenzene Sulfonic Acid must be combined with multiple methods, and further investigation can be done to obtain its true toxicity, so as to ensure the safety of human environment.

Future Prospects

I have tried to study P - Aminobenzene Sulfonic Acid. Its properties are very different and it has a wide range of uses. Looking at the current state, although it has been useful, the prospect of the future is still what our generation expected.
In the field of industry, it may help the color of dyes, make them brighter and stronger, add color to fabrics, and enhance their beauty. In the road of medicine, it may be able to develop new agents to treat human diseases and protect people's health.
We should use our best understanding and explore its mysteries. We should use new techniques to improve its quality and use it widely. In the coming days, I hope P-Aminobenzene Sulfonic Acid will make great achievements in all industries, for the progress of the world and the wealth of people's livelihood.

Frequently Asked Questions

What are the chemical properties of P-Aminobenzene Sulfonic Acid?

P - Aminobenzene sulfonic acid, that is, p-aminobenzene sulfonic acid, is an organic compound with multiple chemical properties.
One is acidic. In this molecule, the sulfonic acid group (-SO-H) can ionize hydrogen ions, which is acidic. In aqueous solution, it can neutralize with bases, such as with sodium hydroxide. The hydrogen ion in the sulfonic acid group combines with hydroxide ion to form water to form p-aminobenzene sulfonic acid sodium salt. This reaction reflects its acidic characteristics and can be used to prepare corresponding sulfonate compounds.
The second is the reaction of amino groups. The amino group (-NH _ 2) in the molecule has certain alkaline and nucleophilic properties. Because nitrogen atoms contain lone pairs of electrons, they can react with acids to form salts. For example, when reacting with hydrochloric acid, the amino nitrogen atom binds to hydrogen ions to form a positively charged ammonium salt structure. At the same time, the nucleophilicity of the amino group allows it to participate in nucleophilic substitution reactions. If reacting with an acyl halogen, the amino nitrogen atom attacks the carbonyl carbon in the acyl halogen, and the halogen atom leaves to form an amide compound. This reaction is often used in organic synthesis to construct compounds containing amide bonds.
The third is the reaction of the benzene ring. The benzene ring in the p-aminobenzene sulfonic acid is aromatic and can undergo electrophilic substitution reactions. Because the amino group is the power supply radical, it has a great influence on the electron cloud density of the o-and para-position of the benzene ring, making the o-and para-position more vulnerable to the attack of electrophilic reagents. For example, when nitrification is carried out, the nitro group mainly enters the amino group para-position, because the electron cloud density at this position is relatively high, which is conducive to the attack of electrophilic reagents, thereby generating products such as p-nitroaminobenzenesulfonic acid.
The fourth is stability-related properties. Under normal conditions, p-aminobenzenesulfonic acid is relatively stable. However, in the case of strong oxidizing agents, the benzene ring, amino group and sulfonic acid group may be oxidized, resulting in changes in structure and properties. And its solubility also has characteristics, slightly soluble in cold water and easily soluble in hot water. This property can be used in the process of separation and purification. It can be dissolved and crystallized by controlling the temperature to achieve the purpose of separation or purification.

Common Uses of P-Aminobenzene Sulfonic Acid

The common uses of p-aminobenzenesulfonic acid, let me tell you one by one.
First, in the dye industry, this is a key raw material. It can be used to prepare a variety of dyes, such as acid dyes, direct dyes, etc. Because of the characteristics of amino groups and sulfonic acid groups in its structure, it can participate in many chemical reactions, thus constructing colorful dye molecules. Through clever synthesis process, fabrics can be dyed with brilliant colors and have good color fastness, which can meet the diverse needs of the printing and dyeing industry.
Second, it also has extraordinary performance in the field of medicine. P-aminobenzenesulfonic acid is an important intermediate for the synthesis of sulfonamides. Sulfonamides have antibacterial and anti-inflammatory effects, can effectively inhibit the growth and reproduction of a variety of bacteria, and escort human health. Through a series of chemical reactions, p-aminobenzenesulfonic acid can be converted into various sulfonamides, which has made outstanding achievements in the clinical treatment of infectious diseases.
Third, in the field of analytical chemistry, its role should not be underestimated. It is often used as a raw material for acid-base indicators. Because of its certain acid-base properties, it can show different color changes in different pH solutions, so it can keenly indicate the change of pH of the solution, helping researchers to accurately determine the end point of the chemical reaction and ensure the accuracy of the analysis results.
Fourth, in the leather industry, p-aminobenzenesulfonic acid can be used for leather tanning. It can be combined with the protein in the leather to enhance the strength and durability of the leather, while giving the leather a good softness and gloss, and improving the quality and appearance of the leather.
Fifth, in the production of pesticides, it is also an important synthetic raw material. It can be used to prepare some pesticides with insecticidal and bactericidal effects, contributing to the control of agricultural pests and diseases, and helping to ensure the yield and quality of crops.
In summary, p-aminobenzenesulfonic acid is widely used and plays an indispensable role in many industrial and scientific fields.

What is the production method of P-Aminobenzene Sulfonic Acid?

The method of preparing p-aminobenzene sulfonic acid used to start with benzene and nitrate to obtain nitrobenzene. Nitrobenzene is stable, and iron powder and hydrochloric acid are used as reducing agents. Nitro groups can be converted into amino groups to obtain aniline.
After the reaction, aniline is co-heated with concentrated sulfuric acid to carry out a sulfonation reaction. During this reaction, the sulfo group of sulfuric acid (SO 🥰 H) will replace the hydrogen atom of the amino para-position on the aniline aniline ring, and then the p-aminobenzene sulfonic acid will be obtained. However, in this process, due to the electron-giving effect of amino groups, the electron cloud density of the benzene ring will increase. In addition to the formation of para-products, ortho-products are also formed. Therefore, it is necessary to control the reaction conditions to increase the
Today's industrial production methods have many improvements. Some use p-nitrotoluene as raw material, which is first sulfonated to obtain p-nitrotoluenesulfonic acid, and then reduced to convert the nitro group into an amino group, and p-aminobenzenesulfonic acid can also be obtained. This way of raw materials is relatively easy to obtain, and the reaction steps are relatively simple, which can reduce production costs, and is also conducive to the separation and purification of products. Gradually, it has become increasingly important in the industry. The preparation process requires precise control of reaction temperature, reactant ratio, reaction time and other conditions to achieve the best reaction effect and product quality.

P-Aminobenzene Sulfonic Acid Storage and Transportation

When storing and transporting p-aminobenzenesulfonic acid, many matters need to be paid careful attention. This substance has certain chemical activity, so the storage place must be dry and well ventilated to prevent it from deteriorating due to moisture. Cover a humid environment, or cause it to undergo chemical reactions, which will damage the quality.
Furthermore, temperature control is also the key. It is advisable to avoid hot topics at high temperatures. Under high temperatures, p-aminobenzenesulfonic acid may decompose and affect its chemical properties. A cool place should be selected to maintain the temperature within a suitable range.
When transporting, the packaging must be tight. Contain it in a sturdy container to ensure that there is no leakage during transportation. If there is a leak, it will not only damage the environment, but also pose a threat to the safety of transporters. At the same time, the transport vehicle should also be clean, and no other chemical substances should be retained to prevent adverse reactions with it.
Although p-aminobenzenesulfonic acid is not extremely toxic, it must be operated in accordance with regulations. Those who transport and store it should be aware of its chemical properties and act in accordance with safety procedures. When handling, handle it with care, do not vibrate or collide violently, and avoid packaging damage. In this way, p-aminobenzenesulfonic acid can be safely stored and transported without causing accidents and losses.

What are the effects of P-Aminobenzene Sulfonic Acid on the environment and human health?

P-Aminobenzene + Sulfonic Acid (P-Aminobenzene + Sulfonic Acid) has a significant impact on the environment and human health.
If P-Aminobenzene + Sulfonic Acid is dispersed in the environment, it will disturb soil and water bodies. In the soil, it may change the soil quality, affect the community structure and activity of soil microorganisms, and then affect the uptake of nutrients by plant roots, causing plant growth to be hindered. If it flows into the water body, it can cause water quality to deteriorate and endanger aquatic organisms. After contact with aquatic animals such as fish, it may cause physiological disorders, such as abnormal respiration, metabolism, and even death, which will disrupt the balance of water ecology.
As for human health, p-Aminobenzene sulfonic acid has certain toxicity. If people inhale the dust containing this substance through the respiratory tract, or ingest it through skin contact, accidental ingestion, etc., it will be harmful to health. It may irritate the respiratory tract, causing cough, asthma and other discomfort. Through skin contact, it can cause skin allergies, itching, redness and swelling. If taken inadvertently, it will damage the digestive system, and cause symptoms such as nausea, vomiting, and abdominal pain. Long-term exposure to this substance also poses a potential carcinogenic risk. Because p-aminobenzenesulfonic acid is converted into carcinogenic substances in the body or metabolized into carcinogenic substances, it endangers the normal physiological functions of human cells and increases the risk of cancer.
Therefore, p-aminobenzenesulfonic acid is harmful to the environment and human health. It should be used with caution every day and properly dispose of related wastes to prevent its adverse effects on the environment and human health.