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3,4-Diaminobenzenesulphonic Acid

Specifications

HS Code	813122
Chemical Formula	C6H8N2O3S
Molar Mass	188.205 g/mol
Appearance	Yellow - brown crystals or powder
Solubility In Water	Soluble
Melting Point	300 °C (decomposes)
Odor	Odorless
Ph Aqueous Solution	Acidic
Density	1.56 g/cm³
Stability	Stable under normal conditions
Hazard Class	Toxic, irritant

As an accredited 3,4-Diaminobenzenesulphonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

Packing & Storage

Packing	25 - kg bag packaging for 3,4 - Diaminobenzenesulphonic Acid.
Storage	3,4 - Diaminobenzenesulphonic Acid should be stored in a cool, dry, well - ventilated area, away from direct sunlight. Keep it in a tightly closed container to prevent moisture absorption and exposure to air. Store it separately from oxidizing agents, acids, and bases to avoid potential reactions that could cause deterioration or hazardous situations.
Shipping	3,4 - Diaminobenzenesulphonic Acid is shipped in sealed, corrosion - resistant containers. Shipments must comply with hazardous chemical regulations, ensuring proper handling and transport to prevent spills and protect the environment.

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General Information

Historical Development

3,4-Diaminobenzenesulfonic acid is also a chemical product. Trace back to its source, and explore at the beginning, but the knowledge is not deep. Over the years, various sages have studied and thought carefully, and their properties and uses have gradually become more and more detailed. Beginning with crude preparation, the effect is slightly inferior. The later craftsmen are ingenious, the technique is new, the yield is increasing, and the quality is also improving. The field of application has also gradually broadened, adding its brilliance to the dyeing and weaving industry; in the road of medicine, help its development. It was difficult to explore in the past, but now the results are remarkable. It all depends on the diligent research of all scholars to obtain this chemical product. In various industries, it can be used to promote its progress.

Product Overview

3,4-Diaminobenzenesulfonic acid is also used as a chemical product. Its color is white or slightly light, and it is made of crystalline powder. This physical property is high, soluble in water, slightly soluble in alcohol.
3,4-diaminobenzenesulfonic acid is suitable for dyes. It can be used as a raw material for the synthesis of multi-dye dyes. The resulting dyes have good color fastness and bright color. It is also useful in this field and can be used in the synthesis of certain dyes.
The method of this method is often made from the starting material of a specific benzene series compound in multiple steps, such as nitrification, prototyping, sulfonation, etc. It is necessary to control the reaction parts, and the degree and pH value must be refined in order to obtain high-quality 3,4-diaminobenzenesulfonic acid. Therefore, this chemical has important value in the field of industrial and scientific research.

Physical & Chemical Properties

3,4-Diaminobenzenesulfonic acid, its physical properties are related to many aspects. Looking at its color, it is often white to light gray powder. Smell, there is little special smell. In terms of its solubility, it has a certain ability to dissolve in water, which is very critical in many reactions and applications. Thermal stability is also an important item. When heated to a specific temperature, or decomposed, its structure and properties are changed. Due to the presence of amino groups and sulfonic acid groups, its chemical activity can react with a variety of reagents, such as alkali, which can form salts. In the field of organic synthesis, it can be used as a key intermediate. After ingenious reactions, compounds with diverse functions can be obtained. They are important in dyes, medicine, and other industries. The study of their physical properties is the key to unlocking more application potential.

Technical Specifications & Labeling

3,4-Diaminobenzenesulfonic acid is also an essential product in the chemical industry. Its process specifications and identification (product parameters) are related to the quality and cannot be ignored.
For process specifications, the choice of raw materials must be pure and free of impurities before starting. The temperature, pressure and time of the reaction must be precisely controlled. If the temperature is stabilized in a certain area during the synthesis, if it is too high, the product will be variable, and if it is too low, the reaction will be slow.
For identification (product parameters), the content label must be clear and accurate to tell people the geometry of the composition. The memory of color and purity is also indispensable. This is all accurate for considering its quality. In accordance with this process specification and identification, the production of 3,4-diaminobenzenesulfonic acid must be suitable for the needs of the world.

Preparation Method

The method of making 3,4-diaminobenzenesulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism. The raw material is selected from benzenesulfonic acid as the base, and nitrobenzenesulfonic acid is obtained by nitrification. After using iron filings and hydrochloric acid as the medium, the reduction step is carried out to convert the nitro group into an amino group. This reaction requires temperature control, speed regulation and precise operation. In the catalytic mechanism, iron filings and hydrochloric acid play a key role in accelerating the reaction process. The production process also needs to be fine, from the ratio of raw materials to the reaction time, it must be strictly controlled. In this way, high-quality 3,4-diaminobenzenesulfonic acid products can be prepared, laying the foundation for subsequent chemical applications.

Chemical Reactions & Modifications

The way of chemical industry is related to the change of substances. For 3,4 - Diaminobenzenesulphonic Acid, the chemical reaction and modification are particularly critical.
The reaction of 3,4 - Diaminobenzenesulphonic Acid involves either nucleophilic substitution or redox. Under suitable conditions, its amino group and sulfonic acid group can participate in the reaction to form a new structure. However, this reaction requires precise temperature control and pH adjustment to achieve the ideal yield and purity.
As for the modification method, or introduce new functional groups to change its physicochemical properties. For example, adding hydrophobic groups can change its solubility; adding reactive groups can expand its application domain. This is a good strategy to improve the performance of 3,4-Diaminobenzenesulphonic Acid, which has far-reaching significance in various fields of chemical industry and can help it play a greater role.

Synonyms & Product Names

3,4-Diaminobenzenesulfonic acid is also an important raw material for chemical industry. Its synonyms are different, and many are complex. This substance is also known as p-phenylenediamine sulfonic acid, which is widely used in chemical industry.
In the field of printing and dyeing, it is a key component of synthetic dyes, which can make fabrics bright and lasting. It is also indispensable in pharmaceutical chemistry, or as an intermediary for the preparation of specific drugs.
Although its names are different, they all refer to the same substance. Or because of its diverse uses, different industries and regions call it different according to their habits and needs. However, the nature of chemistry is also the same, and scholars should be clear about it. Whether it is called 3,4-diaminobenzenesulfonic acid or p-phenylenediamine sulfonic acid, they are all the same chemical materials and contribute greatly to the development of industry.

Safety & Operational Standards

Specifications for the safety and operation of 3,4-diaminobenzenesulfonic acid
If 3,4-diaminobenzenesulfonic acid is used in chemical products, it is also used in scientific research and industrial fields. When using it, safety and operation standards should not be careless.
Safety is the first priority. The operator wears protective gloves and goggles in front of protective clothing. This product may irritate the skin and eyes. If you accidentally touch it, rinse it with plenty of water quickly and seek medical attention if necessary. And it is in the air, or it may become dust, and it is harmful to inhalation. Therefore, the place of operation must be well ventilated, or a vacuuming device should be prepared to prevent dust inhalation.
Operating specifications are also necessary. When weighing, use a precise instrument to measure an appropriate amount according to the needs of the experiment or production. When dissolving, it is advisable to slowly add the drug to the solvent and stir it evenly to prevent local overheating or violent reaction. During the reaction process, closely monitor the temperature, pressure and other variables, follow the established process, and do not change it without authorization.
The rules of storage should not be ignored. Put 3,4-diaminobenzene sulfonic acid in a dry and cool place to avoid fire and oxidizing agents. Store it in categories to prevent danger from mutual reaction.
The disposal of waste should be in accordance with environmental protection regulations. Do not discard it at will, and collect it to prevent pollution of the environment.
All of these are the safety and operation specifications for 3,4-diaminobenzenesulfonic acid. By following them, you can avoid danger, make the best use of them, ensure the smooth progress of scientific research and production, and protect the safety of personnel and the environment.

Application Area

3,4-Diaminobenzenesulfonic acid has a wide range of uses. In the field of printing and dyeing, it can be used as a diazo component, which is combined with the coupling component to produce brilliant azo dyes, and dyes fabrics with fresh and lasting color. In the pharmaceutical and chemical industry, it is also a key intermediate, helping to form a variety of drugs, and contributing to the treatment of diseases and diseases. In the field of photosensitive materials, it participates in the production of photosensitive agents, giving photosensitive materials sensitive photosensitivity, and the image is clear and recognizable.
This substance plays a key role in various application fields, adding its brilliance to printing and dyeing, expanding its path for pharmaceuticals, and improving its quality for photosensitive materials. It is actually a widely used and indispensable chemical raw material.

Research & Development

Nowadays, there is a chemical substance, named 3,4-diaminobenzenesulfonic acid, which is very important in our field of research. We have devoted ourselves to studying its characteristics, production methods and applications.
At the beginning of the research, we analyzed its structure in detail, and we knew that its molecular composition was exquisite, and the atoms were connected in an orderly manner. Find its production method, or through several complex chemical changes, strive to obtain high-purity products.
As for the application, this compound shines in many fields. In the dye industry, it can be used as an important raw material to make the color bright and lasting. In pharmaceutical research and development, it may have potential effects, waiting for us to explore in depth.
We continue to refine our research methods, hoping to improve their productivity and optimize performance. With time, we will be able to expand their use, promote their vigorous development in various industries, and benefit the world. This is the ambition of our researchers.

Toxicity Research

The taste of the nature of things is related to the safety of the people, so toxicological research is of the utmost importance. Today there are 3,4 - Diaminobenzenesulphonic Acid, and our generation should investigate its toxicity in detail.
Look at its structure, containing amino groups and sulfonic acid groups. Amino groups may have certain activities and can react with many substances in the body of organisms. Although sulfonic acid groups increase its water solubility, their overall impact on organisms remains to be deeply observed.
Observed from animal experiments, observe its characteristics after ingestion. If it is seen that its behavior is abnormal, or its physiological functions are changed, such as when the diet and activity are abnormal, this is a sign of toxicity. And study its impact on the organs, observe the liver, kidney and other important organs, whether there is a sign of disease.
And test its fate in the environment, whether it is easy to degrade, or residual accumulation, causing ecological changes. After this study, we can know the depth of its toxicity, for the people's livelihood, the environment, to provide evidence, in order to avoid its harm and promote its benefits.

Future Prospects

In the field of chemical industry, the potential of 3,4 - Diaminobenzenesulphonic Acid is obvious. The future development is expected to emerge in the creation of medicine. With its unique structure, it may open up a new path for the research and development of new drugs, help overcome difficult diseases, and bring good news to people with diseases.
Furthermore, in the field of material science, it may improve material properties. Make the material have better stability and durability, apply it to high-end manufacturing, improve product quality, and promote industrial progress.
And with the advancement of science and technology, the production process will also be optimized, the cost will be reduced, and the output will increase. At that time, its application will be more extensive, shining brightly in many fields, and the future will be bright, which is an important direction for the future development of chemical industry.

Where to Buy 3,4-Diaminobenzenesulphonic Acid in China?

As a trusted 3,4-Diaminobenzenesulphonic 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 3,4-Diaminobenzenesulphonic 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 3,4-diaminobenzenesulfonic acid?

3,4-Dihydroxybenzoic acid has many main uses. This is a class of substances with important applications in various fields such as medicine, chemical industry and food.
In the field of medicine, it can be used as a key intermediate for the synthesis of drugs. Because the compound has a specific chemical structure and biological activity, it can be chemically modified to obtain drugs with different pharmacological effects. For example, some drugs with antibacterial and anti-inflammatory properties use 3,4-dihydroxybenzoic acid as the starting material during the synthesis process to obtain active ingredients with therapeutic effects on specific diseases through multi-step reactions.
In the chemical industry, it is an important raw material for the synthesis of fine chemicals. It can be used as an additive for the preparation of polymer materials. By adding such substances, the anti-oxidation and stability properties of polymer materials can be improved. It is also used in the production of dyes, giving dyes more excellent color and fastness.
In the food industry, 3,4-dihydroxybenzoic acid can be used as a food preservative. It can inhibit the growth and reproduction of microorganisms, thereby prolonging the shelf life of food and ensuring food safety. And because it naturally exists in some plants and is relatively safe, it has attracted much attention in the field of food preservation.
In summary, 3,4-dihydroxybenzoic acid plays an important role in many fields due to its unique chemical properties, and is indeed a class of compounds with wide application prospects.

What are the physical properties of 3,4-diaminobenzenesulfonic acid?

3,4-Dihydroxybenzoic acid, also known as protocatechuic acid, is an important organic compound. Its physical properties are as follows:
- ** Appearance and Properties **: Under normal conditions, it is white to light gray crystalline powder, and it is fine in appearance. This morphology is easy to identify and operate, and it is easy to access and observe in many chemical reactions and experiments.
- ** Melting point **: about 200-202 ° C. The characteristic of melting point is of great significance in the identification and purity judgment of substances. The phase transition occurs at a specific temperature, and the purity of the substance can be determined by the melting point measurement. If the melting point is accurate and the melting range is narrow, it often indicates that the purity is quite high.
- ** Solubility **: Soluble in hot water, ethanol and ether, slightly soluble in cold water. This difference in solubility lays the foundation for its separation, purification and application. For example, in some extraction processes, a suitable solvent can be selected according to its solubility in different solvents to achieve efficient separation from the mixture.
- ** Odor and Taste **: Usually no significant odor, the taste may be slightly sour. The characteristics of odor and taste are crucial when it comes to applications in food, medicine and other fields. The absence of significant odor and slight acid astringency make it more advantageous for applications in these fields without unduly interfering with the original flavor of the product.

What are the precautions for the production of 3,4-diaminobenzenesulfonic acid?

When preparing 3,4-dihydroxybenzoic acid, there are many points to pay attention to. This is a priority for chemical synthesis and needs to be treated with caution.
The first to bear the brunt, the selection and treatment of raw materials is crucial. The raw materials used must be pure and free of impurities. The quality of the raw materials is directly related to the purity and yield of the products. If the raw materials contain impurities, the synthesis reaction or side reactions will cause the product to be impure, and subsequent purification will be more difficult. Therefore, the procurement of raw materials requires a reliable supplier, and detailed testing after receiving the materials, and proper storage and pretreatment according to their characteristics.
The precise control of the reaction conditions is also of paramount importance. Temperature, pressure, reaction time and catalyst dosage all have a profound impact on the reaction process and results. If the temperature is too high or the reaction is out of control, if it is too low, the reaction rate will be slow or even unable to occur. Improper pressure may affect the phase state and reaction equilibrium of the reactants. If the reaction time is insufficient, the amount of product generated is small; if it is too long, it may cause the product to decompose. Although the amount of catalyst used is small, it can change the rate of chemical reaction. The accuracy of the dosage is related to the reaction efficiency and selectivity.
Furthermore, the selection and maintenance of reaction equipment is indispensable. The material needs to be resistant to corrosion of the reaction medium and has good sealing performance to prevent material leakage and external impurities from invading. Regular maintenance and inspection of equipment to ensure its normal operation can ensure the stable
The separation and purification of the product should not be underestimated. After the reaction is completed, the product is often mixed with impurities such as unreacted raw materials, by-products and catalysts. Appropriate separation methods, such as crystallization, distillation, extraction, etc., are selected to obtain high-purity products. The purification process is handled with care to avoid product loss.
Safety protection measures should not be ignored. The synthesis process or involves toxic, harmful, flammable and explosive chemicals. Strict safety procedures must be followed during operation, and protective equipment, such as gas masks, fire clothing, etc. In addition, safety facilities and emergency plans need to be improved to deal with emergencies.
All of these are the key points that should be paid attention to in the production of 3,4-dihydroxybenzoic acid. Any failure in any link may affect the smooth production and the quality of the product. Practitioners should treat every detail with rigor and prudence to achieve the purpose of production.

What is the market price of 3,4-diaminobenzenesulfonic acid?

In today's world, the price of 3,4-dihydroxybenzoic acid in the city has changed due to many reasons. Its price is related to the supply of raw materials. If the raw materials are abundant, the price may be flat; if the raw materials are scarce and difficult to harvest, the price will rise.
It is also related to the craftsmanship. The method of mastery can save labor and materials, reduce its cost, and the price will also be reduced. If the craftsmanship is simple and labor-intensive, the price will be high.
And it depends on the supply and demand of the city. If there are many seekers, but the supply is insufficient, the price will rise; if there are few applicants, the supply will exceed the demand, and the price will decline.
Looking at the market conditions, the price of this 3,4-dihydroxybenzoic acid varies from tens to hundreds of gold per kilogram or from tens to hundreds of gold. Its price is not constant and changes with the market. When the industry observes changes in the market, assesses the situation, and determines its policy, it is almost possible to gain its benefits.

What are the preparation methods of 3,4-diaminobenzenesulfonic acid?

To prepare 3% 2C4-dihydroxybenzoic acid, the methods are as follows:
First, salicylic acid is used as the starting point. Salicylic acid is acylated to obtain acetylsalicylic acid. After nitration with dilute nitric acid, 3-nitro-4-acetoxybenzoic acid can be obtained. After reduction, the nitro group is reduced to an amino group. Complex with diazotization and hydrolysis, the amino group is easy to become a hydroxyl group, and the target can be obtained.
Second, resorcinol is used as the starting point. When resorcinol and oxalic acid are stored in a dehydrating agent, they are condensed to obtain 4-hydroxy-3-carboxyl-1,2-benzoquinone. After reduction, 3% 2C4-dihydroxybenzoic acid can be obtained.
Third, p-hydroxybenzoic acid is used as the starting point. P-hydroxybenzoic acid is sulfonated to obtain 4-hydroxy-3-sulfonic acid benzoic acid. After alkali fusion, the sulfonic acid group is easy to become a hydroxyl group, that is, 3% 2C4-dihydroxybenzoic acid.
Fourth, catechol is used as the starting point. Catechol and carbon dioxide are carboxylated to obtain 3% 2C4-dihydroxybenzoic acid under high pressure with alkali as the catalyst.
All these numbers have advantages and disadvantages. According to various factors such as the availability of raw materials, the difficulty of reaction, and the high or low yield, a pure and sufficient amount of 3% 2C4-dihydroxybenzoic acid can be obtained by selecting the good one.