4,4-Dinitrostilbene-2,2-Disulfonic Acid

Lingxian Chemical

Specifications

HS Code	648453
Chemical Formula	C14H8N2O8S2
Molar Mass	396.35 g/mol
Appearance	Yellowish - brown powder
Solubility In Water	Soluble to some extent
Melting Point	Decomposes before melting
Acidity	Diacidic due to two sulfonic acid groups
Stability	Stable under normal conditions, but may decompose on heating or in contact with strong oxidizers
Odor	Odorless or very faint odor
Hazard Class	May cause irritation to eyes, skin and respiratory system

Packing & Storage

Packing	50 - kg bags for 4,4 - Dinitrostilbene - 2,2 - Disulfonic Acid chemical packaging.
Storage	4,4 - Dinitrostilbene - 2,2 - Disulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, ignition sources, and incompatible substances like strong oxidizers. Store in a tightly - closed container to prevent moisture absorption and contamination, ensuring its stability and minimizing potential safety risks.
Shipping	4,4 - Dinitrostilbene - 2,2 - Disulfonic Acid is shipped in sealed, corrosion - resistant containers. Strict compliance with hazardous chemical shipping regulations ensures safe transportation to prevent spills and environmental risks.

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General Information

Historical Development

4,4-Dinitrostilbene-2,2-disulfonic acid is also a product of chemical industry. At the beginning, chemists studied the properties of substances and sought new substances to meet the needs of industry. At the beginning, the road of exploration was long, and after various attempts, they achieved something.
At that time, science was not as bright as it is today, and equipment was not as sophisticated as it is today, but scholars were determined. After repeated experiments, analyzing its ingredients, studying the principle of its reaction, and gradually understanding the method of synthesis.
With the passage of time, the process has been perfected day by day. From the crude initial, to the precise temperature control and speed regulation, the quality and quantity of the product have been improved. This product is increasingly used in dyes, medicine and other industries, contributing to industrial development. Its historical evolution is also the result of unremitting chemical research.

Product Overview

4,4-Dinitrostilbene-2,2-disulfonic acid is an important chemical raw material in the field of organic synthesis. Its properties are light yellow to yellow crystalline powder, which is slightly soluble in water.
The preparation method often uses stilbene as the starting material and is prepared through multiple steps such as nitrification and sulfonation. In the dye industry, its position is significant, and it is a key intermediate for the synthesis of a variety of high-performance direct dyes and reactive dyes. With the characteristics of nitro and sulfonic acid groups in its structure, it can effectively improve the color and fastness of dyes.
However, the production process needs to strictly control the reaction conditions. Because it involves dangerous reactions such as nitrification, a little carelessness will cause safety hazards. And the purity of the product has a great influence on the quality of the subsequent dyes, so the purification steps cannot be ignored.

Physical & Chemical Properties

The physicochemical properties of 4,4-dinitrostilbene-2,2-disulfonic acid are worth exploring. This substance is light yellow in color, like a powder, and has a certain solubility in water. Its melting point is suitable, about a specific range, and its stability is also good. In terms of chemical properties, it has certain reactivity. Because it contains nitro and sulfonic acid groups, it can form salts in case of bases, and can react with some reagents. The spectral characteristics are unique, and the functional group characteristic peak can be observed by infrared spectrum, and nuclear magnetism can reveal its molecular structure. In the chemical industry, it is often used as a dye intermediate. With its physical and chemical properties, it can produce dyes with bright color and excellent fastness. It is a valuable chemical material.

Technical Specifications & Labeling

In this study of 4,4-dinitrostilbene-2,2-disulfonic acid, its process specifications and identification (product parameters) are the key. The process specifications need to specify the preparation method, from the selection of raw materials, the accurate ratio, to the reaction conditions, such as temperature, duration, pressure, etc. In terms of identification, the product parameters should include purity geometry, impurity geometry, physical properties, such as color, state, taste, chemical properties should also be identified, such as stability, reactivity, etc. In this way, the product can be well prepared, the quality can be controlled, and it can be used to the best in subsequent applications. It will not live up to the research and development efforts, and it will also ensure the stability and safety of its application in various fields.

Preparation Method

The preparation of 4,4-dinitrostilbene-2,2-disulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism. The raw materials are often based on stilbene compounds and added with nitrides, etc. In the production process, in a suitable reaction vessel, adjust to a specific temperature and pressure. First put the raw materials in a certain proportion and stir well. In the reaction step, the nitrification reaction is initiated first, so that the nitro group is connected to a specific check point of stilbene. The reaction time and temperature need to be controlled to prevent excessive nitrification. After sulfonation, a sulfonic acid group is introduced. In the catalytic mechanism, or a specific catalyst is used to promote the reaction rate and extract the purity of the product. In this way, through a series of fine operations, 4,4-dinitrostilbene-2,2-disulfonic acid products can be obtained.

Chemical Reactions & Modifications

The research on the modification of 4,4-dinitrostilbene-2,2-disulfonic acid is significant for chemical researchers.
The initial reaction usually follows the established path. However, in order to improve its properties, it is necessary to study the reaction parts carefully. If the temperature increases or decreases, the reaction rate can be reduced, or the reaction can be completed. The addition of catalysis can also affect the reaction process, or introduce a new reaction path.
As far as modification is concerned, it can reduce the temperature of the molecule, increase its characterization, or reduce its characteristics in a certain aspect. Such as introducing specific bases, or changing the arrangement of atoms, to meet different needs, so that this compound has more uses in many fields.

Synonyms & Product Names

4,4-Dinitrostilbene-2,2-disulfonic acid, this substance has a wide range of uses. Its synonymous name, or 4,4 '-dinitro-2,2' -disulfonic acid stilbene. The names of commodities in the market are also diverse.
Cover is often a key material in the preparation of dyes because of its chemical properties. Aid dyes are bright in color and have good fastness. In the process of chemical synthesis, many reactions rely on its participation to form various useful products.
Although the names are different, they all refer to this substance. In the field of my chemical research, I am familiar with its synonymous name and commodity name, so that I can use it accurately, explore its endless potential, and contribute to the prosperity of chemical industry and the advancement of science and technology.

Safety & Operational Standards

Safety and operating specifications for 4,4-dinitrostilbene-2,2-disulfonic acid
Fu 4,4-dinitrostilbene-2,2-disulfonic acid In chemical research and production, its safety and operating standards are of paramount importance.
First word safety. This material has certain chemical activity and should be stored in a cool, dry and well-ventilated place. Avoid open flames and hot topics to prevent unexpected reactions. In case of strong oxidizing agents or violent reactions, the two should be separated. If the powder is scattered in the air, there is a risk of explosion in case of fire, and the place must be kept clean. Dust prevention measures are indispensable.
As for the operation specifications. The operator must have professional training and be familiar with the characteristics and operation procedures of this substance. During operation, protective equipment must be complete, such as wearing protective clothing, wearing goggles and gloves to prevent it from contacting the skin and eyes. If you accidentally touch it, rinse it with plenty of water quickly and seek medical attention if necessary.
In the production process, the reaction conditions need to be precisely controlled. Temperature, pressure, proportion of reactants, etc. are all key factors. During the heating process, the heating rate should be slow to prevent the reaction from getting out of control. And the reaction equipment must be regularly overhauled to ensure that there is no risk of leakage.
After the experiment or production is over, the waste should not be discarded at will. According to relevant regulations, collect and deal with it in a classified manner to prevent environmental pollution.
In this way, strict adherence to safety and operating standards can ensure the smooth research and production of 4,4-dinitrostilbene-2,2-disulfonic acid.

Application Area

4,4-Dinitrostilbene-2,2-disulfonic acid (4,4-Dinitrostilbene-2,2-Disulfonic Acid) is also an important product of chemical industry. It is widely used in the field of dyeing and weaving, and is the key raw material for the preparation of various bright colors and good fastness dyes. With this material, dyes that can be applied to fabrics and have been washed in the sun for a long time and are not easy to fade.
In the paper industry, it is also indispensable. It can increase the whiteness and luster of paper, making the appearance of paper more pleasing to the eye. The paper treated by it is white and shiny, suitable for high-end printing and writing paper products.
It is also an important intermediate in the synthesis of some special materials. It helps to form functional materials with specific properties, such as photoelectric materials, which make great contributions to the progress of materials science.

Research & Development

I have been studying 4,4-dinitrostilbene-2,2-disulfonic acid for a long time. At the beginning, I explored its preparation and tried various things before I got the best method. With a certain agent and a certain quality, the temperature control is appropriate and the time is appropriate, and it is completed.
Its properties are also carefully examined, and it has been observed in the environment of light, heat, acid and alkali. Knowing that it encounters strong light or hot topic, it changes its properties slightly, and it is still stable in weak acids and weak bases.
As for its use, it can enter the dyeing industry, adding color is very wonderful, and the dyeing color is bright and long-lasting. And it has potential value in pharmaceutical research, I hope it can grow in the future.
Although it has achieved something today, the road ahead is still far away. Want to study its nature, expand its use, and hope to work together with all colleagues to promote the progress of this industry, so that it can have outstanding achievements in various fields such as work and medicine, and be used by the world to achieve great things.

Toxicity Research

Today, there is a substance named 4,4-dinitrostilbene-2,2-disulfonic acid. I am a chemical researcher to explore its toxicity. This substance may be useful in various fields of chemical industry, but the study of its toxicity is crucial.
Observe various experiments to observe its effect on living beings. Or touch the skin, or breathe, you can detect the clues of its toxicity. If it acts on microinsects, observe the change of their vitality; if it is applied to plants and trees, observe its state of prosperity and withering. After many attempts, it has been proved that its signs of toxicity are harmful to the growth and reproduction of living beings.
Although the research is incomplete, the state of toxicity is already known. In the future, we should take a more careful approach to investigate the toxicity of this 4,4-dinitrostilbene-2,2-disulfonic acid in detail, in order to avoid disasters for those who use this product, for the safety of the environment and the health of life, and make every effort to make sure that the truth is revealed.

Future Prospects

Wuguanfu 4,4 - Dinitrostilbene - 2,2 - Disulfonic Acid This product has great potential in the field of chemical industry. Although the methods used at present may be difficult, looking to the future, there is much room for improvement.
The rise of new technologies will make the preparation easier and the cost can be reduced. In materials, printing and dyeing, etc., it will definitely be able to develop its talents and add new brilliance. And with the deepening of research, it may be able to find more wonderful uses and open up unprecedented realms.
With time, refined craftsmanship, and optimized character, we will be able to meet the needs of the times, emerge in the forest of industries, and become the bright star of the future chemical industry.

Frequently Asked Questions

What is the main use of 4,4-dinitrostilbene-2,2-disulfonic acid?

4,4-diaminosilane-2,2-disulfonic acid, often referred to as DSD acid, has a wide range of main uses. In the dye industry, DSD acid is a key intermediate. Many brilliant direct dyes and reactive dyes are synthesized with DSD acid as the starting material. With its unique molecular structure, it can endow dyes with excellent dyeing properties, such as high color fastness, bright color, etc., making fabrics more beautiful and durable after dyeing.
DSD acid also plays an important role in the paper industry. The dyes prepared by it can be used for paper dyeing, improve the appearance quality of paper, meet the color requirements of different paper products, and make paper more unique in packaging, printing, etc.
In addition, in the field of organic synthesis, DSD acid is used as a basic raw material to open up the way for the synthesis of many organic compounds. Because of its amino and sulfonic acid groups, it can ingeniously react with a variety of reagents to derive organic compounds with diverse structures, providing rich materials and possibilities for the development of organic synthesis chemistry. In short, DSD acid, with its indispensable characteristics, plays a key supporting role in many industrial fields, promoting the continuous progress and innovation of related industries.

What are the production methods of 4,4-dinitrostilbene-2,2-disulfonic acid?

4,4-diaminobiphenyl-2,2-disulfonic acid is an important organic compound, which is widely used in dyes, medicine and other fields. Its preparation method has been studied by chemists over the years. The following common preparation methods are briefly described:
One is to use benzidine as the initial raw material. Benzidine is sulfonated with sulfuric acid under specific conditions. In this reaction, sulfuric acid performs the function of a sulfonating agent, and the hydrogen atom at a specific location in the benzidine molecule is replaced by a sulfonic acid group, thereby generating 4,4-diaminobiphenyl-2,2-disulfonic acid. The raw materials for this route are relatively easy to obtain, and the reaction process is relatively clear. However, benzidine has strong carcinogenicity, strict safety protection requirements during operation, and considerable environmental hazards.
The second is to use nitrobenzene as the starting material. Nitrobenzene can be obtained by reduction reaction of aniline, and aniline is further diazotized and coupled, and then sulfonated to obtain the target product. This route avoids the drawbacks of benzidine and is relatively more green and environmentally friendly. However, there are many reaction steps, and the reaction conditions at each step need to be precisely controlled, and the reaction equipment and technical level are required to be high, otherwise the yield and purity will be affected.
The third is the coupling reaction catalyzed by transition metals. Select a suitable organic small molecule containing an amino group and a sulfonic acid group, and a coupling reaction occurs under the action of a transition metal catalyst to synthesize 4,4-diaminobiphenyl-2,2-disulfonic acid. This method has the advantages of mild reaction conditions and high selectivity, which can effectively reduce side reactions. However, transition metal catalysts are usually expensive and difficult to recover and repurpose, which limits their large-scale industrial application to a certain extent.

What are the physical properties of 4,4-dinitrostilbene-2,2-disulfonic acid?

4,4-diaminobiphenyl-2,2-disulfonic acid is an organic compound with many physical properties. Its appearance is mostly white to light gray crystalline powder, which is characterized by light scattering and absorption due to the arrangement of atoms and chemical bonds in the molecular structure.
From the perspective of solubility, the substance is soluble in water, because the sulfonic acid group is a strong hydrophilic group, which can be combined with water molecules by hydrogen bonding and other actions, so it is easily soluble in polar solvent water.
In terms of stability, it is generally stable under normal conditions. The chemical bond energy within the molecule is relatively high, and the structure is relatively stable. However, when encountering strong acids, strong bases or strong oxidants, the stability will be affected. Due to the fact that both amino and sulfonic acid groups have certain reactivity, strong acids and bases will react with these groups to change the molecular structure; strong oxidants may change the valence of some atoms in the molecule, triggering oxidation reactions.
Melting point is also one of its important physical properties, and generally has a specific melting point range. This is because when the crystal material is heated, the molecular vibration in the lattice intensifies, reaching a specific temperature, the lattice can be overcome, and the crystal transforms into a liquid state. This temperature is the melting point. The melting point of 4,4-diaminobiphenyl-2,2-disulfonic acid is determined by its intermolecular forces and crystal structure.
Furthermore, the compound has certain hygroscopicity. Due to its hydrophilic group sulfonic acid group, it is easy to absorb moisture from the air, and in a high humidity environment, it may agglomerate or deliquescence due to moisture absorption.

What should be paid attention to when storing and transporting 4,4-dinitrostilbene-2,2-disulfonic acid?

For 4,4-diaminourea-2,2-disulfonic acid, there are many key things to pay attention to when storing and transporting.
The first thing to pay attention to is environmental conditions. This substance is very sensitive to temperature and humidity, and the storage place should be selected in a cool, dry and well-ventilated place. If the temperature and humidity are too high, it may cause its properties to change, and even cause chemical reactions, which will damage the quality. For example, if it is very hot in summer and the warehouse does not have suitable cooling and dehumidification equipment, the substance may deteriorate.
The second is the tightness of the packaging. The packaging must be strong and well sealed to prevent contact with outside air, moisture and other impurities. The packaging material should also be carefully selected, and it needs to be able to withstand the chemical properties of the substance and not react with it. If special corrosion-resistant plastic containers or metal drums lined with special materials are used, it is a way to ensure the stability of the packaging.
Furthermore, vibration and collision during transportation should not be underestimated. Proper fixing and buffering measures should be taken to avoid damage to the packaging due to turbulence. And the means of transportation should also be clean, without other residual substances that may react with it.
At the same time, personnel operation is also important. Personnel who come into contact with this object should be in front of appropriate protective equipment, such as gloves, goggles, protective clothing, etc., to prevent harm to the body. There should also be obvious warning signs in storage and transportation areas to remind everyone to pay attention to safety.
In addition, the storage period should also be closely monitored, and regular inspections should be carried out in accordance with relevant regulations. If there are signs of deterioration, they need to be properly handled in a timely manner, and they must not be used rashly or continue to be transported to avoid adverse consequences.

What are the effects of 4,4-dinitrostilbene-2,2-disulfonic acid on the environment?

In the case of 4,4-diaminoxanthan-2,2-disulfonic acid, the impact of this substance on the environment is quite complex.
It may interact with certain proteins and enzymes in the aquatic environment, causing many effects on aquatic organisms due to its chemical properties. If this compound enters rivers, lakes and seas, some aquatic organisms, such as fish, shellfish, etc., may be disturbed by it. The amino groups and sulfonic acid groups contained in its structure may interfere with the physiological functions of aquatic organisms, affecting their respiration, feeding, reproduction and other behaviors. For example, the presence of amino groups may interact with certain proteins and enzymes in organisms, causing changes in their activities, which in turn affect the normal growth and development of organisms.
In the soil environment, 4,4-diaminoxanthin-2,2-disulfonic acid may affect the soil microbial community. Soil microorganisms are crucial to the material cycle and nutrient transformation of the soil ecosystem. The presence of this compound may change the type and quantity of microorganisms, affect the fertility and structure of the soil. If it accumulates too much, it may inhibit the growth of some beneficial microorganisms and destroy the soil ecological balance.
In the atmospheric environment, although the possibility of direct volatilization entering the atmosphere is low, if it is not handled properly during production and use, it may enter the atmosphere in the form of aerosols. Once it enters, it may participate in complex chemical reactions in the atmosphere, affect the chemical composition of the atmosphere, or even affect air quality, and indirectly affect the health of humans and other organisms.
And this compound is difficult to degrade in time in the environment due to its stable structure or certain persistence, and is prone to accumulation. In the long run, the potential threat to the environment cannot be ignored.