Products

2-Aminobenzenesulphonic Acid

    Specifications

    HS Code

    121764

    Chemical Formula C6H7NO3S
    Molar Mass 173.19 g/mol
    Appearance White to light - yellow crystals or powder
    Odor Odorless
    Solubility In Water Soluble in water
    Melting Point 300 °C (decomposes)
    Pka Value 3.28
    Density 1.48 g/cm³
    Ph Of Solution Acidic
    Stability Stable under normal conditions

    As an accredited 2-Aminobenzenesulphonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 25 - kg bags for 2 - Aminobenzenesulphonic Acid, well - sealed for safe storage.
    Storage 2 - Aminobenzenesulphonic Acid should be stored in a cool, dry, and well - ventilated area. Keep away from sources of heat, sparks, and open flames as it may pose a fire risk. Store it in a tightly closed container to prevent moisture absorption. Additionally, keep it separate from oxidizing agents to avoid potential chemical reactions that could lead to hazards.
    Shipping 2 - Aminobenzenesulphonic Acid should be shipped in well - sealed containers, protected from moisture and heat. Follow proper hazardous material regulations during transportation to prevent any spillage or risk to handlers and the environment.
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    2-Aminobenzenesulphonic Acid
    General Information
    Historical Development
    2-Aminobenzenesulfonic acid is also a chemical product. The origin of its history can be traced back to the past. In the past, various sages studied the field of chemistry. At first, the understanding of this thing was still shallow, and only a little exploration of its nature. However, scholars are determined and unremitting.
    After years, the research has deepened. Everyone has devoted their efforts to its structure and preparation method. From simple observation to refined study of its synthesis method, every step is very difficult. With the gradual development of science and technology, the preparation technology has also improved. In the past, the preparation process was complicated and inefficient, but now the technology has been improved, and the yield has increased.
    Looking at its development process, it is the efforts of many sages. From ignorance to clarity, from simplicity to complexity, this is the work of chemical explorers. The use of 2-aminobenzenesulfonic acid in various fields has gradually expanded, and it has also added a brilliant pen to the history of chemistry.
    Product Overview
    2-Aminobenzenesulfonic acid is an organic compound. Its color is white and crystalline. This compound is widely used in dyes, medicine and other fields.
    As far as dyes are concerned, it is often the key raw material for the preparation of azo dyes. After a specific chemical reaction, it can be coupled with other reagents to produce colorful dyes. It can be used in fabric dyeing to make fabrics bright and lasting.
    In the field of medicine, it also has important value. Its chemical structure has characteristics that enable it to participate in some drug synthesis and contribute greatly to the development of drugs for the treatment of specific diseases.
    The method of preparing 2-aminobenzene sulfonic acid is mostly obtained from benzene as the starting material through a series of reactions such as sulfonation, nitrification, and reduction. The preparation process requires fine control of reaction conditions, such as temperature, pressure, and ratio of reactants, etc., to obtain high-purity products.
    2-aminobenzene sulfonic acid has unique properties and is an important compound with a wide range of uses in industrial and scientific research fields.
    Physical & Chemical Properties
    2-Aminobenzenesulfonic acid is an important chemical substance. Its physical properties are unique, and it is mostly white crystalline powder at room temperature, with a fine texture. Looking at it, it has a luster, just like the faint glow of broken jade. Its smell is very small and almost invisible.
    In terms of chemical properties, this substance has certain acidity. Because it contains sulfonic acid groups, it can neutralize with alkali substances to form corresponding salts. Under certain conditions, amino groups can also participate in many chemical reactions, such as reacting with acid chlorides to form amide compounds. Its stability is quite high, and it can be stored for a long time in a conventional environment without easy deterioration. When it encounters strong oxidizing agents, it will also undergo oxidation reactions, causing its structure to change, and its properties will also vary. These are all important physical and chemical properties of 2-aminobenzenesulfonic acid.
    Technical Specifications & Labeling
    Process specification and identification (product parameters) of 2-aminobenzenesulfonic acid
    Fu 2-aminobenzenesulfonic acid is an important chemical product. The process specification, the choice of the first heavy raw materials, requires pure aniline, sulfuric acid, etc., with accurate proportions and proper operation.
    When preparing, control the temperature to one hundred and thirty degrees. When the reaction is numbered, stir evenly in between to ensure that the reaction is sufficient. After finishing, cool down and crystallize, filter and separate to obtain crude products. After recrystallization, impurity removal and purification, the high-quality products are obtained.
    As for the identification (product parameters), the color white matter is pure, and the content is not less than 99%. The melting point is between one hundred and forty-five and forty-seven degrees, and the water content is slight. Uniform particle size, easy to use later. In this way, it can meet the needs of the industry and travel freely in the city.
    Preparation Method
    The method of making 2 - Aminobenzenesulphonic Acid is related to the raw materials and production process, reaction steps, and catalytic mechanism, which is quite important. The raw materials are often based on benzenesulfonic acid and ammonia water. First, benzenesulfonic acid and ammonia water are mixed in a specific ratio and put into the reactor. Control the temperature to a suitable degree, about one hundred and twenty degrees Celsius, and apply a certain pressure. This is the initial step of the reaction.
    In the reaction, benzenesulfonic acid reacts with ammonia water, and the sulfonic acid group and the amino group are transposed to gradually generate 2 - Aminobenzenesulphonic Acid. This process requires delicate control of temperature and pressure to ensure a smooth reaction. In order to promote the rapid progress of the reaction, a specific catalyst is often added, and its catalytic mechanism is to reduce the activation energy of the reaction and make the molecules more likely to collide
    After the reaction is completed, pure 2 - Aminobenzenesulphonic Acid can be obtained through cooling, separation and purification steps. This production process is critical step by step. The purity of raw materials, the care of steps, and the ingenuity of catalysis are all related to the quality and quantity of the product.
    Chemical Reactions & Modifications
    In recent times, the research on 2 - Aminobenzenesulphonic Acid has deepened. At the beginning of its chemical reaction, most of the products were obtained according to the usual method, but the products were either impure or small in amount.
    Researchers have been thinking hard about the method of change. There are new agents into the reaction, wanting to change its properties, so that the reaction speed and purity. And adjust the temperature and pressure of the reaction, hoping to get good results.
    After repeated tests, gradually obtained. With a certain method, the reaction rate increased and the purity of the product also increased. This change is of great benefit to the preparation of 2 - Aminobenzenesulphonic Acid, paving a new way for industrial production, so that this chemical product can be better used and used in various fields.
    Synonyms & Product Names
    2-Aminobenzenesulfonic acid, also known as o-aminobenzenesulfonic acid. In the field of chemical industry, it has a wide range of uses. Or its synonyms are due to differences in past appellation habits and industries.
    Looking at ancient books, the chemical names in the past were not as standard as today, and the same substance was often called differently. O-aminobenzenesulfonic acid, some people also call it "2-aminobenzenesulfonic acid", but in fact the two are one. When merchants sell it on the market, they have different trade names for their own characteristics or to meet the needs of different customers.
    Although the names are different, the essence of the substance remains unchanged. In chemical experiments and industrial production, it is necessary to clarify its characteristics. No matter what it is called, its chemical properties and uses are established. Scholars and industry professionals should be well aware of the situation of this thing's synonym, so as to ensure the smooth progress of the work without the risk of misuse.
    Safety & Operational Standards
    2-Aminobenzenesulfonic acid safety and operating specifications
    2-Aminobenzenesulfonic acid is an important chemical in the chemical industry. Safety and operating standards are of paramount importance in its research and production process, which is related to the safety of researchers and endangers the smooth production.
    #1. Storage safety
    This product should be stored in a cool, dry and well-ventilated place. Keep away from fires and heat sources to prevent dangerous reactions caused by rising temperatures. It should be stored separately from oxidizing agents, acids, bases, etc., and must not be mixed. Due to mutual contact or severe chemical reactions, it may even explode. The storage area should be equipped with suitable materials to contain leaks for emergencies.
    #2. Operating Specifications
    When operating, be sure to wear appropriate protective equipment. If wearing protective glasses, it can effectively prevent its powder or solution from splashing into the eyes and causing eye damage; wear protective clothing to avoid skin contact, because it may have irritating and corrosive effects on the skin. The operation process needs to be cautious to prevent dust from being released into the air of the workshop. If heating and other operations are carried out, the temperature and time should be strictly controlled, and the operation should be carried out according to the established procedures to prevent the reaction from getting out of control.
    #3. Emergency treatment
    If a leak occurs accidentally, the personnel in the leakage contaminated area should be quickly evacuated to the safe area, and quarantined, and access should be strictly restricted. Emergency responders need to wear self-contained positive pressure breathing apparatus and anti-toxic clothing. Do not let leaks come into contact with combustible substances. When a small amount leaks, a clean shovel can be used to collect it in a dry, clean and covered container; when a large amount leaks, build a dike or dig a pit for containment, transfer it to a tanker or a special collector with a pump, and recycle or transport it to a waste treatment site for disposal.
    #4. Transportation Note
    When transporting, the packaging should be complete and the loading should be safe. During transportation, ensure that the container does not leak, collapse, fall, or damage. It is strictly forbidden to mix and transport with oxidants, acids, alkalis, edible chemicals, etc. During transportation, it is protected from exposure to the sun, rain, and high temperature. The vehicle should be thoroughly cleaned after transportation. The safety and operation specifications for 2-aminobenzenesulfonic acid are the guidelines for research, production and transportation, and must be strictly followed to ensure personnel safety and orderly production.
    Application Area
    2-Aminobenzenesulfonic acid has a wide range of uses. In the dye industry, it can be used as a key intermediate to help the color of the dye become brighter and firmer. The preparation of many classic dyes relies on this as the basic raw material. After delicate chemical reactions, brilliant colors are obtained.
    In the field of medicine, it also has its own influence. It can participate in some drug synthesis and contribute to alleviating diseases and curing diseases. Or because of its specific chemical properties, it can cooperate with other drug ingredients to improve the efficacy.
    In some industrial production processes, 2-aminobenzenesulfonic acid can also play a unique role. Or used to regulate the reaction process or enhance product performance. Its value in various application fields is like that of masonry in Guangsha. Although it is tiny, it is crucial to promote the development of various industries.
    Research & Development
    Research and Development of 2-Aminobenzenesulfonic Acid
    Fu 2-Aminobenzenesulfonic Acid, an important product of chemistry. I study its properties and explore its uses, hoping to make progress.
    At first, analyze its structure, clarify its molecular structure, and know the connection of its atoms. This is the basis for studying its properties. Then measure its physical and chemical properties, know its degree of melting and boiling, solubility, and in different solvents. Also explore its chemical response, observe its composition with other substances, and know its reaction rules.
    As for its application, it is in the dye industry and is an essential material for color making, which can give fabrics brilliant color. In the field of medicine, it also has its uses. It is a raw material for over-the-counter medicines, which can cure diseases and remove diseases.
    At this time, we should continue to research it. Optimize its production method, reduce its consumption and increase its production. Expand its use and seek breakthroughs in new domains. With the advancement of science and technology, we will promote the greater development of 2-aminobenzenesulfonic acid, add brilliance to the chemical industry, and add color to the interests of people's livelihood.
    Toxicity Research
    Toxicity Study of 2-Aminobenzenesulfonic Acid
    In recent times, the science of chemistry has advanced with each passing day, and various chemicals have emerged. 2-Aminobenzenesulfonic Acid is also a common product in the chemical field. As a chemical researcher, we focus on its toxicity research, hoping to explore its details.
    After various experiments, the effect of 2-Aminobenzenesulfonic Acid on biological organisms is particularly complex. At the cellular level, or affecting its metabolic pathway, the activity of some enzymes is changed. Animal experiments also show that if exposed to this chemical for a long time, there may be signs of damage to the organs. Liver, the official of main metabolism, or cell abnormality; kidney, the function of excretion, its filtration function may also be disturbed.
    The occurrence of toxicity is closely related to the dose and exposure time. A small amount of short-term exposure, the body may be able to adjust itself. However, in order to understand its long-term impact on the environment and organisms, it is necessary to explore in depth to ensure the safety of all living beings and the natural environment.
    Future Prospects
    I try to study 2 - Aminobenzenesulphonic Acid. Looking at it now, although it has achieved small success, there are still endless possibilities for future expansion.
    The nature of this thing can emerge in various fields. In the way of medicine, it may help to create new drugs and heal diseases; in the way of chemical industry, it is expected to optimize the process and increase the quality. Its potential capabilities, such as hidden in the stars of the night, are waiting for our generation to explore and glow.
    Our scientific researchers should have great ambitions and unswervingly. With a fearless spirit, study its principles; with unremitting efforts, expand its application. Expected in the future, 2 - Aminobenzenesulphonic Acid can shine, for the well-being of the world, for the temple of science, so that the vision of the future can be realized, live up to our expectations.
    Where to Buy 2-Aminobenzenesulphonic Acid in China?
    As a trusted 2-Aminobenzenesulphonic Acid manufacturer, we deliver: Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements. Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery. Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
    Frequently Asked Questions

    As a leading 2-Aminobenzenesulphonic Acid supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

    What are the main uses of 2-Aminobenzenesulphonic Acid?
    2-Aminobenzenesulfonic acid has many main uses. In the dye industry, this is a key intermediate for the preparation of azo dyes. After diazotization, coupled with various polyphenols and aromatic amines, it can produce colorful azo dyes with good color fastness. It is widely used in textile, leather and other dyeing processes to make fabrics and leather bright and lasting.
    In the field of medicine, 2-aminobenzenesulfonic acid also plays an important role. It is a raw material for the synthesis of a variety of drugs. It can be chemically modified and transformed to obtain compounds with specific pharmacological activities, which are greatly helpful for the treatment and prevention of diseases.
    In the manufacture of pesticides, it can be used as an intermediate for the synthesis of certain pesticides. The synthesized pesticides can effectively prevent and control crop diseases and pests, ensure the yield and quality of crops, and protect the harvest of agriculture.
    In the rubber industry, 2-aminobenzenesulfonic acid can be used as an auxiliary agent. It can improve the vulcanization properties of rubber and improve the physical and mechanical properties of rubber products, such as strength and wear resistance, making rubber products more durable and widely used.
    In other industrial fields, 2-aminobenzenesulfonic acid is also used to produce fine chemicals such as surfactants and fluorescent whitening agents. Surfactants can improve the surface properties of liquids and are widely used in washing, emulsification and other processes; fluorescent whitening agents can brighten the whiteness and gloss of paper, plastics and other materials, and improve the aesthetics and commodity value of products.
    Therefore, 2-aminobenzenesulfonic acid plays an important role in many industrial fields, and is of great significance in promoting industrial development and meeting people's living needs.
    What are the physical properties of 2-Aminobenzenesulphonic Acid?
    2-Aminobenzenesulfonic acid, its physical properties are as follows:
    This substance is mostly white to gray-white crystalline powder at room temperature. Looking at its morphology, it is like a fine powder and has a relatively uniform texture.
    When it comes to solubility, it is slightly soluble in cold water, and its solubility increases in hot water. This property is due to the difference in the degree of interaction between its molecular structure and water molecules. In cold water, the molecular thermal movement is relatively slow, and the hydrogen bonds formed with water molecules are weak, so the dissolution is limited; when the water temperature rises, the molecular thermal movement intensifies and the interaction with water molecules is enhanced. More 2-aminobenzenesulfonic acid molecules can be dispersed in water, and the solubility increases.
    Its melting point is in a specific range, which is one of the important physical constants of the substance. The existence of the melting point is due to the fact that at a specific temperature, the lattice energy of the substance reaches a balance with the energy of the thermal motion of the molecule, and the solid state begins to transform into a liquid state. Accurate determination of its melting point is of great significance for identifying the purity of the substance and distinguishing it from other substances.
    The relative density of 2-aminobenzenesulfonic acid also has a certain value, which reflects its mass in a unit volume. Compared with the density of water or other common substances, it can help to judge its distribution position in the mixed system.
    Its odor is weak. In general environments, if there is no close contact or high concentration environment, it is difficult to detect obvious odor. This is because the molecular volatility is low and the number of molecules escaping into the air is small, so the odor is not significant.
    2-Aminobenzenesulphonic Acid is chemically stable?
    2-Aminobenzenesulfonic acid is a member of organic compounds. Its chemical properties are relatively stable, but it will also react differently due to specific conditions.
    Looking at its structure, the amino group and the sulfonic acid group are connected to the benzene ring. The sulfonic acid group is strongly acidic and can ionize hydrogen ions in water, so 2-aminobenzenesulfonic acid can exhibit acidic properties in aqueous solution. This acidic nature allows it to neutralize with alkali substances to form corresponding salts. For example, when reacted with sodium hydroxide, sodium 2-aminobenzenesulfonic acid and water will be formed.
    The amino group has a certain alkalinity. Although its alkalinity is weaker than that of a strong base, it can also reflect alkaline properties and react with acids under certain circumstances. When 2-aminobenzenesulfonic acid encounters strong acid, the amino group can accept protons, and then form salt compounds.
    In terms of stability, under normal conditions, its structure is quite stable in a dry and room temperature environment, and it can be stored for a long time without significant change. However, if it encounters extreme conditions such as high temperature and strong oxidizing agents, its structure may be damaged. At high temperature, the chemical bonds within the molecule may break, triggering decomposition reactions; strong oxidizing agents may oxidize its amino or sulfonic acid groups, causing molecular structure changes, resulting in chemical properties changes.
    Furthermore, the conjugated system of benzene rings imparts certain stability to 2-aminobenzenesulfonic acid. The conjugated system can make the electron cloud distribution more uniform, reduce the energy of the molecule, and thus enhance the stability of the molecule as a whole. However, this conjugated system also affects its reactivity, making the substitution reaction on the benzene ring more likely to occur. For example, under appropriate catalyst and reaction conditions, other substituents can be introduced into the benzene ring to generate various derivatives.
    Overall, 2-aminobenzene sulfonic acid is chemically stable under common conditions, but under the influence of specific chemical reaction conditions or environmental factors, it can also undergo various chemical reactions, exhibiting unique chemical activities.
    What is the production process of 2-Aminobenzenesulphonic Acid?
    The production process of 2-aminobenzenesulfonic acid has been used in ancient times, but it is described by you today.
    At the beginning, aniline was used as the starting material and obtained by sulfonation. The sulfonator interacts aniline with sulfuric acid. First prepare an appropriate amount of aniline, put it in a special reactor, and slowly inject sulfuric acid. This process requires strict temperature control to prevent excessive reaction. The amount and concentration of sulfuric acid are both related to the effectiveness of the reaction and must be accurately measured.
    When the reaction is carried out, the temperature in the kettle gradually rises, and aniline and sulfuric acid combine with each other. However, if the temperature is too high, side reactions will easily occur, resulting in impure products. Therefore, water-cooled or oil-cooled devices are often used to stabilize the reaction temperature in a suitable range, about tens of degrees Celsius.
    After the reaction is completed, the reaction mixture is obtained. In addition to 2-aminobenzenesulfonic acid, this liquid still contains unreacted raw materials, by-products and sulfuric acid. Then the step of refining is required. First, by the method of neutralization, an alkaline substance such as sodium hydroxide is used to neutralize the excess sulfuric acid, so that the solution is neutral or slightly alkaline.
    Then the solid 2-aminobenzenesulfonic acid is separated from the liquid by separation, either by filtration or centrifugation. The separated solid still contains impurities and is purified by recrystallization. Choose an appropriate solvent, such as hot water, dissolve the solid and filter it while it is hot to remove insoluble impurities. After the filtrate is cooled, 2-aminobenzenesulfonic acid crystals precipitate, and then filter and dry to obtain pure 2-aminobenzenesulfonic acid.
    Although this process has been refined over time, it has been continuously improved to increase the purity and yield of the product, reduce energy consumption and pollution, and meet the needs of today's industry.
    2-Aminobenzenesulphonic Acid market outlook
    2-Aminobenzenesulfonic acid is an important raw material in the chemical industry. In the current market situation, its prospects are quite promising.
    From the demand level, many industries have strong demand for 2-aminobenzenesulfonic acid. In the dye industry, it is a key intermediate for the synthesis of many dyes. With the vigorous development of the textile industry, the demand for dyes has also risen, which in turn drives the demand for 2-aminobenzenesulfonic acid. Due to the continuous innovation of textile products in color and variety, the quality and type requirements for dyes are becoming more and more stringent, and the characteristics of 2-aminobenzenesulfonic acid can meet the diverse needs of dye synthesis, so its position in the dye industry is crucial.
    Furthermore, in the field of medicine, 2-aminobenzenesulfonic acid also plays a key role. It can be used as a raw material for the synthesis of some drugs. With the continuous progress of the pharmaceutical industry, the demand for it has also increased steadily. Nowadays, people pay more and more attention to health, and the pharmaceutical market continues to expand, creating a broad space for the application of 2-aminobenzenesulfonic acid in the pharmaceutical field.
    From the perspective of supply, the current production technology continues to be optimized. Many chemical companies continue to invest in research and development to improve the production efficiency and product quality of 2-aminobenzenesulfonic acid. Advanced production processes are becoming more and more popular, which reduces production costs and enhances the competitiveness of products in the market. However, it should also be noted that environmental protection requirements in the production process are becoming increasingly Enterprises must comply with relevant environmental protection regulations, increase environmental protection investment, and ensure that the production process meets the requirements of green and sustainable development, which may cause certain pressure on the production and operation of some enterprises in the short term.
    Overall, the market prospect of 2-aminobenzenesulfonic acid is quite optimistic. Although it faces challenges in environmental protection and other aspects, with the development of various industries, the growth in demand will bring many opportunities for it. As long as enterprises can conform to the trend of the times, actively respond to challenges, and optimize production and business strategies, they will be able to achieve great results in the 2-aminobenzenesulfonic acid market.