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4-Amino-Toluene-2,5-Disulphonic Acid

Specifications

HS Code	858735
Chemical Formula	C7H9NO6S2
Molar Mass	265.28 g/mol
Appearance	Solid
Solubility In Water	Soluble
Ph	Acidic
Boiling Point	Decomposes before boiling
Melting Point	Decomposes
Odor	Odorless or faint
Stability	Stable under normal conditions
Hazard Class	Irritant (to skin, eyes, respiratory system)

As an accredited 4-Amino-Toluene-2,5-Disulphonic 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 4 - Amino - Toluene - 2,5 - Disulphonic Acid chemical packaging.
Storage	4 - Amino - Toluene - 2,5 - Disulphonic Acid should be stored in a cool, dry, and well - ventilated area. Keep it away from heat, flames, and sources of ignition. Store in a tightly sealed container to prevent moisture absorption and contact with incompatible substances, such as strong oxidizers. This helps maintain its stability and prevent potential chemical reactions or degradation.
Shipping	The chemical 4 - Amino - Toluene - 2,5 - Disulphonic Acid is shipped in sealed, corrosion - resistant containers. Packaging ensures protection from moisture and external elements. Shipments follow strict chemical transport regulations for safe delivery.

Free Quote

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General Information

Historical Development

4-Amino-toluene-2,5-disulfonic acid is also a chemical substance. Its origin is also derived from the research of various sages. In the past, all chemists thought hard and tried it again and again in the laboratory to observe its properties and reason.
At the beginning, the preparation method was not good, the yield was thin, and the quality was not pure. However, the researchers were not discouraged, and they moved forward with great effort. With the passage of time, the technique became more refined, the method became better, the yield increased, and the quality was also excellent.
Since its inception, it has been used in printing and dyeing, medicine and other industries. The industry of printing and dyeing depends on its splendid colors; the field of medicine also uses its properties to make good medicines. Looking at the way of its development, it is actually the hard work of various sages, and it also adds a lot of brilliance to the industry of chemistry.

Product Overview

4-Amino-toluene-2,5-disulfonic acid is a kind of chemical products. Its color or light yellow, like powder, has a certain solubility in water.
This product is widely used in the chemical industry. It is often used as a key intermediate in dye synthesis. Through specific chemical reactions, many bright-colored and excellent dyes can be derived to meet the needs of textile, printing and dyeing industries. And the characteristics of amino groups and sulfonic acid groups in its structure enable it to play a unique role in certain reactions and affect the properties and functions of the product.
Synthesis of this product requires a specific process and a multi-step reaction. The reaction conditions such as temperature, pH, etc. are strictly controlled to ensure the purity and quality of the product. However, during use and production, it is also necessary to pay attention to its safety and follow relevant procedures to prevent harm to the environment and people.

Physical & Chemical Properties

4 - Amino - Toluene - 2,5 - Disulphonic Acid, its physicalization is very important. The color of this compound is often a specific color, or a crystalline appearance, and it has a certain luminosity. Its melting characteristics are characteristic, and it begins to melt at a specific degree. This degree is an important physical indicator. Solubility is also important. In polysolubility, in water or some soluble solutions, it shows different solubility, or soluble, or slightly soluble, depending on the solubility. In terms of its chemical properties, the existence of an aminosulfonic acid group makes it possible to reverse the chemical properties, such as the chemical properties that can be formed, and the substitution of some active groups.

Technical Specifications & Labeling

There are 4 - Amino - Toluene - 2,5 - Disulphonic Acid products today, and its technical procedures and identification (commodity parameters) are crucial. The technical procedures of this product need to follow precise steps and laws. From the selection of raw materials, it is necessary to choose pure and refined ones, and then go through several delicate chemical reactions. The temperature, duration, and material ratio of each reaction are fixed, and there is no error at all.
As for the identification (commodity parameters), its physical and chemical properties, such as color, smell, and purity geometry, need to be detailed. Its purity should be determined by a high-precision method to achieve a very high standard. Its solubility, stability, and other characteristics also need to be accurately marked so that users can understand. In this way, it is necessary to ensure that this product can play its best role in various applications and meet the needs of the application.

Preparation Method

The method for preparing 4-amino-toluene-2,5-disulfonic acid is the first raw material for production. The raw material is often obtained in a small amount of toluene, and the quality of toluene is refined to ensure its quality. The process of production is based on the order of sulfonation and nitrification.
First, toluene is placed in the reactor to sulfonate with sulfuric acid, and the control is appropriate. The sulfonic acid group is attached to the toluene molecule. This is the first step. In addition, a mixed acid of nitric acid and sulfuric acid is added to carry out nitrification and inversion, and the inversion is controlled. The nitro group is sequentially attached to the specific position of toluene.
After the reaction is completed, the cold temperature is reduced, and 4-amino-toluene-2,5-disulfonic acid is obtained by neutralizing, dividing, and improving the temperature. In the whole process of preparation, it is necessary to precisely control the reaction temperature, such as temperature, temperature, and raw material ratio, and build a reasonable catalytic system to improve the efficiency and ensure the quality.

Chemical Reactions & Modifications

4-Amino-toluene-2,5-disulfonic acid is also a chemical substance. Its chemical reaction and denaturation are the focus of our research.
When viewing this agent, its molecular structure and reaction conditions all affect its properties and effects. If it is treated in a certain way, it may lead to bond changes and generate new substances. Temperature, pH, etc., are also important factors. The level of temperature can promote or slow down its response; the degree of acid and base can change the path of the reaction.
If you want to improve its properties, you can try different methods. If you add other agents to catalyze, or change the order of the reaction, hope to get better properties. Studying its adaptation and transformation can expand the way forward for industrial use, medicine, etc., making it more effective in various domains, benefiting people's lives and promoting karmic prosperity.

Synonyms & Product Names

4-Aminotoluene-2,5-disulfonic acid, which has many other names. It is also known as p-aminotoluene-2,5-disulfonic acid, and there are many trade names in the industry. Or Pai Latin Fast Red B, or Pai Latin Fast Red FRR, in printing and dyeing and other industries, these trade names are widely known.
The name of its synonym is due to differences in habits and application scenarios in the chemical industry. Different regions and manufacturers give it different names according to their own traditions and needs. However, no matter how the name changes, it refers to this specific chemical substance. It has an indispensable position in dye synthesis, pigment preparation, etc. With its unique chemical properties, it contributes an important force to the development of related industries.

Safety & Operational Standards

Code for safety and operation of 4-amino-toluene-2,5-disulfonic acid
For 4-amino-toluene-2,5-disulfonic acid, it is also involved in chemical preparation. To ensure the safety of its operation, follow the rules and it is essential.
The first word is safe. This substance has a certain chemical activity, and it is mixed with other things, or it may not happen. Therefore, when stored, it must be placed in a separate place, away from fire, heat sources, and direct sunlight. And it is necessary to choose a cool, dry, and well-ventilated place to prevent moisture dissolution and deterioration. The utensils used must be corrosion-resistant materials. If they are filled with metal utensils, they may cause chemical reactions.
Furthermore, the operation specification. When starting this thing, you must wear protective equipment, such as gloves, goggles, protective clothing, etc., to prevent it from touching the skin and entering the eyes. When weighing, it is advisable to use a precise weighing instrument and measure it according to the square. There should be no difference. When dissolving, slowly pour in the solvent and stir it evenly. Don't be too hasty and cause the solution to splash. If there is a spill, quickly clean it with an appropriate object and do not disperse it.
When reacting, strictly observe the range of temperature and pressure. The temperature control device needs to be accurate; the pressure measurement should not be slack. Observe the reaction situation, if there is any abnormality, quickly stop the operation and check the reason to ensure safety.
After completion, the residue should not be discarded at will. Classify and dispose of according to regulations, or recycle and reuse, or dissolve safely to protect the environment and avoid pollution.
In short, in the handling of 4-amino-toluene-2,5-disulfonic acid, safety is the first priority, and norms are the most important. Be careful to do it.

Application Area

4-Amino-toluene-2,5-disulfonic acid, this substance has a wide range of uses. In the field of printing and dyeing, it can be used as a dye intermediate, and the dye aid becomes a brilliant color, making the fabric bright and fastness, and it will not fade over time. In the pharmaceutical and chemical industry, it is a key raw material for the synthesis of special drugs, or has the ability of antibacterial, anti-inflammatory, and relieving pain, and removes diseases and diseases for patients. In scientific research experiments, it is used as an analytical reagent to help researchers accurately analyze the composition and structure of substances and identify the mysteries. It has a wide range of uses and is of important value in many fields, promoting the development of the industry and contributing to the progress of people's lives and science and technology.

Research & Development

4-Amino-toluene-2,5-disulfonic acid is also an important product in chemical research. I have devoted myself to studying this substance for a long time. Its unique properties have potential uses in many fields of chemical industry.
I began to explore its structure, analyze its molecular composition, in order to understand the source of its characteristics. I also observed its reaction under different conditions and observed the law of its change. After many tests, we have found a way to optimize the synthesis, which can increase its yield and improve its quality.
Looking to the future, the development of this product is promising. It may emerge in the creation of new materials and fine chemicals. I will make unremitting efforts to expand the field of its application, and to advance the research, I will use my wisdom and strength to promote this product to shine in the industry and promote the prosperity of the industry.

Toxicity Research

When I heard that there is 4 - Amino - Toluene - 2,5 - Disulphonic Acid in the world, I was worried about it, so I took toxicological research as a service.
Husband 4 - Amino - Toluene - 2,5 - Disulphonic Acid, its nature may be subtle, but the harm is invisible. I have carefully observed its shape, explored its quality, and investigated it under various environments. I have observed the changes caused by its contact with things.
After months of research, I have tested it in all things. See it in the aquatic genus, or disturb its life and disrupt its metabolic order; in the soil, or hinder its growth and damage its health. Although the harm has not been fully understood, one of its poisons has been glimpsed.
The matter of toxicology is related to the safety of all spirits, and it is necessary to be careful. I should continue to do my best to make it clear, in order to avoid the scheme of harm and profit, and to protect all things in the world from this poison.

Future Prospects

Husband 4 - Amino - Toluene - 2,5 - Disulphonic Acid, the thing of transformation. This thing, its future prospects, can be used.
It can be used for its own nature, or it can be used for new purposes in many fields. On the work, it can be improved and added to the material to help its performance be more outstanding. The field of, if studied in depth, may become the cornerstone of new research, saving the world.
The steps of science and technology, the sun and the new moon. We researchers, Heart power, explore its secrets. It is expected that unremitting research will surely be able to uncover more functions of it, so that this thing can be greatly improved in all walks of life, and it can achieve extraordinary power for people's well-being and achieve unparalleled greatness.

Where to Buy 4-Amino-Toluene-2,5-Disulphonic Acid in China?

As a trusted 4-Amino-Toluene-2,5-Disulphonic 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 4-Amino-Toluene-2,5-Disulphonic 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 4-Amino-Toluene-2,5-Disulphonic Acid?

4-Amino-toluene-2,5-disulfonic acid, which has a wide range of uses. In the dyeing and weaving industry, it is often used as a raw material for dye synthesis. It can produce a variety of bright colors and good fastness dyes, which can be used in fabric dyeing to make fabrics rich and lasting.
In the field of chemical synthesis, it is also an important intermediate. Through a series of chemical reactions, many compounds with special properties can be derived, which can be used in the manufacture of fine chemicals such as medicine and pesticides. In medicine, or to help synthesize pharmaceutical ingredients with specific curative effects; in the field of pesticides, it can contribute to the creation of efficient and low-toxic pesticides.
Furthermore, in scientific research experiments, 4-amino-toluene-2,5-disulfonic acid is often used as a reagent to study reaction mechanisms and explore new synthetic pathways due to its unique chemical structure and properties, helping researchers gain in-depth insight into chemical processes and promoting the development of chemical disciplines. In short, 4-amino-toluene-2,5-disulfonic acid has an important position and wide range of uses in industrial production and scientific research.

What are the production processes of 4-Amino-Toluene-2,5-Disulphonic Acid?

The production process of 4-amino-toluene-2,5-disulfonic acid has been around since ancient times. Since the beginning of the method, all kinds of materials need to be prepared, including toluene, sulfuric acid, nitric acid, etc.
First, toluene is used as the base, into the sulfuric acid kettle, and the reaction is heated. This step requires temperature control to ensure that the temperature is suitable before the sulfated product can be obtained. The amount of sulfuric acid and the length of the reaction are all critical, and there should be no slight difference.
Next, nitric acid is added to the inside, and the technique of nitrification is performed. This process also requires careful observation of the temperature and the reaction process, so that the nitro group is precisely in place to obtain a nitro-containing sulfonic acid compound.
After that, the reduction work arrives. With a suitable reducing agent, the nitro group is turned into an amino group, which is the key transformation of 4-amino-toluene-2,5-disulfonic acid. The reducing agent, choose Youdao, or iron powder hydrochloric acid, or sulfide alkali, depending on the actual situation.
After the reaction is completed, it is not easy to separate and purify the product. It is often used to crystallize and filter to remove its impurities to obtain pure 4-amino-toluene-2,5-disulfonic acid. When crystallizing, the temperature and the choice of solvent are all related to the purity and yield of the product.
Although this process has gone through years, it has been continuously improved with the advancement of technology. Today's technology is more efficient, environmentally friendly, and strives to reduce waste and energy consumption to meet current needs.

What is the market price of 4-Amino-Toluene-2,5-Disulphonic Acid?

4-Amino-toluene-2,5-disulfonic acid, which is a very important chemical raw material in the chemical industry, is widely used in dyes, medicine and many other industries. Its market price fluctuates and is often affected by multiple factors.
The first to bear the brunt, the cost of raw materials is the key factor. The basic raw materials required for the synthesis of 4-amino-toluene-2,5-disulfonic acid, such as toluene, sulfuric acid, nitric acid, etc. The price fluctuation is directly related to the production cost of 4-amino-toluene-2,5-disulfonic acid. If the price of these raw materials rises due to factors such as market supply and demand imbalance, changes in origin, and policy regulation, the price of 4-amino-toluene-2,5-disulfonic acid will also rise; conversely, if the price of raw materials decreases, the price of products is also expected to decline.
Furthermore, the market supply and demand situation has a significant impact on its price. With the development of the dye industry, the demand for dyes that can provide bright colors and good fastness will increase accordingly. As an important dye intermediate, 4-amino-toluene-2,5-disulfonic acid will also increase accordingly. When the demand far exceeds the supply, the price will naturally rise; if the market demand is weak, and the production enterprises have excess capacity and oversupply, the price will easily fall.
In addition, the industry competition landscape also affects the price. If there are many companies producing 4-amino-toluene-2,5-disulfonic acid in the market and the competition is fierce, each company may adopt a price reduction strategy in order to compete for market share; conversely, if the market concentration is high and a few companies control the dominant power, their pricing power will be enhanced, and the price may be relatively stable and at a high level.
At the same time, policies and regulations and environmental protection requirements cannot be ignored. Environmental protection policies are becoming stricter, and enterprises need to invest more funds in pollution control and process improvement in order to meet environmental protection standards, which undoubtedly increases production costs, which in turn drives up product prices.
As for the exact market price, it is difficult to generalize. In the current market environment, its price may vary due to differences in quality, purity, number of transactions and trading area. Ordinary industrial-grade products, if traded in batches, may range from thousands to 10,000 yuan per ton; while high purity, special specifications, prices or higher. For accurate market prices, you need to consult industry suppliers, traders, or refer to real-time quotations from professional chemical product information platforms.

What are the physicochemical properties of 4-Amino-Toluene-2,5-Disulphonic Acid

4-Amino-toluene-2,5-disulfonic acid. The physical and chemical properties of this substance are as follows:
Its appearance is mostly white to light gray powder. In terms of solubility, it is easily soluble in water, and ions can be dissociated in water, showing good hydrophilicity. This property allows it to be more evenly dispersed in aqueous solution systems.
In terms of stability, under conventional temperatures and general environmental conditions, the substance is quite stable and is not prone to decomposition or other violent chemical reactions on its own. However, when exposed to extreme conditions such as high temperature, strong acid or strong base, its chemical structure may be damaged. For example, in a strong acid environment, the sulfonic acid group may undergo reactions such as protonation; under strong alkali conditions, the amino group may react with the base to a certain extent.
From an acidic point of view, due to the presence of sulfonic acid groups in the molecule, it appears acidic. The sulfur atom in the sulfonic acid group has a high electronegativity, which makes the hydrogen atom in the hydroxyl group easy to dissociate, thereby releasing hydrogen ions and exhibiting acidic characteristics. This acidity allows it to neutralize with the base to generate corresponding salts.
The melting point of 4-amino-toluene-2,5-disulfonic acid is in a specific temperature range, and this melting point characteristic is of great significance for its separation, purification and molding in chemical production. By precisely controlling the temperature and leveraging its melting point characteristics, it can achieve effective separation from other impurities, thus enhancing product purity.

What are the packaging and storage requirements for 4-Amino-Toluene-2,5-Disulphonic Acid?

4-Amino-toluene-2,5-disulfonic acid, this is an important chemical raw material. Its packaging and storage requirements are very critical, and it is related to the quality and safety of the product.
Let's talk about the packaging first. According to the ancient method, it should be filled in a sturdy container. The common one is an iron drum lined with plastic. This bucket is thick and tough, which can prevent external collision and damage to the material. The plastic lining is well-packed, which can isolate air and moisture, so that the material is protected from moisture and deterioration. There are also special multi-layer composite bags. The outer layer is tough and wear-resistant, and the inner layer has excellent moisture resistance. Layer by layer protection ensures that the material is complete.
As for storage, choose a cool, dry and well-ventilated place. Avoid direct sunlight. If exposed to the hot sun, the temperature will rise, or the material properties will change. The humidity in the warehouse also needs to be strictly controlled. If the humidity is too high, it is easy to make the material absorb moisture and agglomerate, which will affect subsequent use. Furthermore, this product should be stored separately from oxidants and alkalis, and cannot be mixed. Because of its active chemical nature, it can be improperly mixed with other substances, or cause chemical reactions, endangering safety.
When storing, it is also necessary to regularly check whether the packaging is in good condition. If there is any damage, repair or replace the packaging in time to prevent material leakage. In this way, follow the packaging and storage requirements to ensure the stable quality of 4-amino-toluene-2,5-disulfonic acid for subsequent production and other purposes.