4-Hydroxy-7-(Phenylamino)-2-Naphthalenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	967860
Chemical Formula	C16H13NO4S
Molecular Weight	315.34
Appearance	Solid (usually powder)
Solubility In Water	Slightly soluble
Solubility In Organic Solvents	Soluble in some polar organic solvents
Ph Aqueous Solution	Acidic due to sulfonic acid group
Odor	Odorless or very faint odor
Stability	Stable under normal conditions, may decompose under extreme heat or strong oxidizing agents

Packing & Storage

Packing	250 - gram bottle, sealed, for 4 - Hydroxy - 7 - (Phenylamino) - 2 - Naphthalenesulfonic Acid.
Storage	4 - Hydroxy - 7 - (phenylamino)-2 - naphthalenesulfonic acid should be stored in a cool, dry place, away from sources of heat and ignition. Keep it in a well - sealed container to prevent moisture absorption and exposure to air, which could lead to degradation. Store separately from incompatible substances like strong oxidants and bases to avoid chemical reactions.
Shipping	4 - Hydroxy - 7 - (phenylamino)-2 - naphthalenesulfonic acid is shipped in accordance with strict chemical regulations. It is packed securely in suitable containers to prevent spillage and ensure safe transportation.

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4-Hydroxy-7-(Phenylamino)-2-Naphthalenesulfonic Acid

General Information

Historical Development

4-Hydroxy-7- (anilinyl) -2-naphthalenesulfonic acid is also a chemical substance. Trace its source, study it at the beginning, and go through various explorations. In the past, scholars worked hard to study this acid. At that time, the instrument was not as fine as it is today, but everyone worked tirelessly. After many tests, its properties and reactions were observed. From ignorance to clarity, its understanding gradually deepened. The process has also improved with the years. The initial method is crude and simple, and after pondering, it has become more delicate, and the yield and purity have increased. Its use in chemical industry, printing and dyeing and other fields has gradually expanded. In the past, the research and application of this acid have been increasingly refined, and it has emerged in the forest of industry, and its achievements have gradually become apparent.

Product Overview

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is the key product of our chemical research. Its color is elegant and fine in texture. Looking at its properties, it is often in the state of powder and has special physical properties.
This product has a unique structure. The phenylamino group is cleverly connected with the hydroxyl group and the naphthalenesulfonic acid group to build a complex and delicate molecular structure. In terms of chemical properties, due to its special structure, it shows unique reactivity and can participate in many organic reactions. It is widely used in dyes, medicine and other fields. When
is prepared, multiple processes are required to precisely control the reaction conditions. Temperature, time, and raw material ratio are all key. A slight difference will affect the purity and yield of the product. After repeated trials and fine regulation, this high-quality product is expected to open up a new path for related fields and contribute to scientific research and industrial development.

Physical & Chemical Properties

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, this compound is related to its physical and chemical properties, and there is much to be studied. Looking at its shape, it may be in a specific state at room temperature, or in a crystalline state, with a specific color, which is related to the orderly arrangement of its molecular structure. In terms of its solubility, it varies in various solvents, due to the different intermolecular forces and the interaction of solvent molecules. Its melting point is also one of its characteristics, determined by the intermolecular binding force. And chemically active, because it contains hydroxyl, amino and sulfonic acid groups and other functional groups, it can involve many reactions, either nucleophilic or electrophilic, and has potential applications in the field of organic synthesis. Exploring these properties can pave the way for their industrial applications, material research and development, etc., making them more useful to the world.

Technical Specifications & Labeling

4-Hydroxy-7- (anilinyl) -2-naphthalenesulfonic acid is the chemical we are dedicated to studying. Its process specifications and identification (product parameters) are really the key.
Those who standardize the process must choose pure and high-quality materials from the selection of raw materials, and the impurities must be minimal. The method of synthesis requires precise control of temperature, pressure, reaction time and other factors. During the reaction, the temperature should be maintained in a specific range. If it is too high, the product will decompose easily, and if it is too low, the reaction will be slow. The pressure also needs to be adapted to make the reaction smooth. The duration cannot be ignored. If it is too short, the reaction will not be completed, and if it is too long, it will consume resources. In terms of
labeling (product parameters), the purity must meet the highest standards, and the color, crystal form, etc. should also comply with the established regulations. In this way, we can ensure that this chemical is of high quality and plays its due role in many fields such as industry and scientific research.

Preparation Method

Preparation of 4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid (raw materials and production process, reaction steps, catalytic mechanism)
The husband wants to prepare 4-Hydroxy-7- (Phenylamino) - 2 - Naphthalenesulfonic Acid, the first heavy raw material is selected. Naphthol, aniline, etc. are used as base materials, and the two need to be pure and free of impurities to be a good material.
As for the production process, first make naphthol and sulfuric acid co-heat, and carry out a sulfonation reaction. Control the temperature to a moderate level, and do not overheat it to cause other changes. After the sulfonation is completed, introduce aniline, and then adjust the temperature to cause a condensation reaction. The reaction steps should be slow, and the changes in color and smell should be observed to prove the progress of the reaction.
The catalytic mechanism is also the gist. A specific catalyst can be added to promote the rate of the reaction and increase the purity of the product. However, the amount of catalyst must be carefully weighed, more will be damaged, and less will be less effective. In this way, according to this preparation method, 4-Hydroxy-7 - (Phenylamino) -2 - Naphthalenesulfonic Acid can be formed to meet the needs of all parties.

Chemical Reactions & Modifications

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is also a key substance in chemical synthesis. Its chemical reaction is the core of investigation. To understand its transformation, it is necessary to study all the reaction conditions in detail. The temperature, the amount of reagents, and the length of the reaction all affect the properties of the product.
When the temperature is adjusted at a high temperature, the activity of the reactants increases, and the reaction rate also accelerates. If it is too high, it may cause side reactions to grow and damage the purity of the product. The same is true for the proportion of reagents. Only by accurately blending can the reaction move towards the expected direction. It is also necessary to control the duration. If it is too short, the reaction will not be completed, and if it is too long, it will cause the product to deteriorate
Optimizing this reaction can improve the properties of the product. Enhancing purity can make the product more useful in various fields. Enhancing stability, facilitating its storage and transportation. By continuously studying the beauty of the reaction and adjusting all factors, we will be able to obtain products with better performance, which has far-reaching implications for chemical research and industrial applications.

Synonyms & Product Names

4 - Hydroxy - 7 - (Phenylamino) - 2 - Naphthalenesulfonic Acid, which also has many other names. Although the ancient chemistry was not as precise as today's system, the ancestors also gave different names for it because of their wisdom.
Or "p-hydroxy-7-anilinyl-2-naphthalenesulfonic acid", which is named in concise terms according to its structural characteristics. Also known as "4-hydroxy-7-phenylamino-2-naphthalenesulfonic acid", although the expression is slightly different, they all refer to the same.
As for the trade names, they are also rich and diverse. In the past, merchants gave unique names to their characteristics and uses, hoping to have something else in the market and attract attention. For example, "a certain euphronaphthalenesulfonic acid" is intended to recognize its excellent quality; and "special naphthalenesulfonic acid" is used to highlight its characteristics. Although the names are different, they are all 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid. Although the names are different, the quality is the same, which adds to the chemical research and application.

Safety & Operational Standards

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, this is a chemical I have recently studied. The safety and operating practices of this chemical are of paramount importance, and I will elaborate.
First, safety, this chemical has specific chemical properties, and it may come into contact with other substances or cause reactions. When storing, be sure to keep it in a dry, cool and well-ventilated place, away from fire, heat and strong oxidants. When handling, handle it with care to prevent leakage due to damaged packaging. In case of accidental leakage, immediately isolate the scene, evacuate unrelated people, etc. At the same time, according to the corresponding disposal process, properly clean up, must not allow it to spread wantonly, so as not to endanger the surrounding environment and personal safety.
In terms of operation specifications, operators must be professionally trained and familiar with the operation process and precautions. When operating, be sure to wear appropriate protective equipment, such as protective gloves, goggles and protective clothing, to prevent it from contacting the skin and eyes. During the experiment or production process, strictly control the reaction conditions, precisely control the temperature, pressure and reactant ratio and other factors to ensure that the reaction proceeds as expected. After the experiment, thoroughly clean the instruments and equipment used and store them properly for next use.
Overall, for chemicals such as 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, only by strictly adhering to safety and operating standards can we ensure that the research and production process is smooth and harmless to people and the environment. This is the responsibility of our chemical researchers.

Application Area

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is widely used in the field of printing and dyeing. It can be used as a dye intermediate. It can be used as a dye intermediate. It can be used to make colorful dyes through delicate synthesis. It can dye fabrics with bright colors and good color fastness. It can be used in clothing, home textiles and other fabrics with outstanding effect.
In the leather tanning industry, it is also useful. It can assist tanning agents to make leather flexible and durable, and has the effect of enhancing color, making leather products look more exquisite.
In the paper industry, it also helps. It can improve paper color, increase paper whiteness and brightness, and improve its quality. From this perspective, 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid plays a key role in many practical fields and makes significant contributions.

Research & Development

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is one of the chemical substances. I have been studying it for a long time. This substance has unique properties and is related to many chemical reactions.
Past research, focusing on exploring its synthetic path. After repeated experiments, trying various raw materials and conditions, we gradually obtained effective methods. Although the process is difficult, every breakthrough is a joy.
As for development, this substance has great potential in the fields of dyes, medicine and so on. In the field of dyes, it can cause bright and lasting colors; in the field of medicine, it may have curative effects on specific diseases. I will continue to study and expand its application, adding to the chemical field, making this substance more useful and promoting the development of the industry.

Toxicity Research

The identification of material properties is of great importance to people's livelihood. Today, there is a thing called 4 - Hydroxy - 7 - (Phenylamino) - 2 - Naphthalenesulfonic Acid, which is also of concern to researchers in the field of chemistry.
To investigate the toxicity of this thing is actually a priority. The study of toxicity is not an overnight effort, and requires rigorous methods and careful observation.
To observe the structure of its molecules, or to be able to speculate on the signs of toxicity. However, based on the structure alone, no conclusion can be drawn. It must be based on experiments and evidenced by data.
Apply this thing to the body of an animal, observe its reaction, and observe its physiological changes. From the state of eating, the state of action, and even the signs of the organs, it should not be ignored.
If you see it has discomfort, physiological violation, this is a sign of toxicity. And when the toxicology is analyzed in detail, it is necessary to find out whether its action path in the body is to damage the membrane of the cell, or to disrupt the order of metabolism.
The study of toxicity aims to clarify its harm, prevent its danger, and provide warnings for the world when using this product to protect their health.

Future Prospects

I have studied this product of 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid. Looking at the current situation, this product has shown its use in various fields, but my heart looks forward to the future, and I still have a broad outlook.
In the future, technology is new, and this product may shine in the field of medicine. With the tide of precision medicine, or according to its characteristics, new drugs for treating diseases can be developed to relieve diseases. In the field of materials, it is also expected to become the foundation of new materials, endow materials with specificity, and expand the boundaries of their application.
With the growing popularity of environmental protection, this product may be improved to have the ability to protect the environment and show its skills in the industry of pollution. Although there may be obstacles ahead, I firmly believe that with time and diligent research, this product will be able to shine in the future, benefit everyone, and achieve unfinished business.

Frequently Asked Questions

What is the main use of 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid?

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, this substance has a wide range of uses. In the field of dyes, it is often used as a key intermediate. Due to its special chemical structure, it can be transformed into many dyes with bright colors and excellent fastness through various chemical reactions. After a delicate synthesis process, reactive dyes suitable for fabric dyeing can be prepared, making fabrics uniform in color and lasting in color. It is very useful in the textile printing and dyeing industry.
In the pigment industry, it is also an important raw material. With special processing, it can be converted into high-quality organic pigments, which are widely used in the production of inks, coatings, etc. The ink produced is bright in color and the printing effect is clear and realistic; the paint produced is not only rich in color, but also has good weather resistance and hiding power, which adds color to many objects and also plays a protective role.
Furthermore, in some drug research and development fields, it may have potential uses. Due to its specific chemical structure, it may participate in the construction of drug molecules, and after in-depth research and modification, it may become a pharmaceutical ingredient with specific pharmacological activities, providing new opportunities for the development of the pharmaceutical industry.
In addition, in the manufacture of some fine chemical products, 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is also indispensable. Or as a catalyst carrier, with its unique structure, it can provide a suitable environment for catalytic reactions, improve reaction efficiency and selectivity; or play a role in surfactant synthesis, optimize surfactant performance, and make it more effective in industrial production and daily life cleaning.

What are the physicochemical properties of 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid

4-Hydroxy-7- (anilinyl) -2-naphthalenesulfonic acid, this is an organic compound. Its physicochemical properties are quite critical and have important uses in many fields.
Looking at its physical properties, under room temperature and pressure, it is mostly in the form of a solid. Its color may be white to light yellow powder, which varies depending on the production process and impurity content. The substance has a certain solubility and is soluble in water, but the solubility may vary with temperature. When heating up, the solubility often increases, and due to the increase in temperature, the thermal motion of molecules intensifies, and the solute molecules are more easily dispersed between solvent molecules. In organic solvents, such as ethanol, acetone, etc., it also has a certain solubility, which is very useful in organic synthesis and separation and purification.
On its chemical properties, the presence of hydroxyl groups and sulfonic acid groups in 4-hydroxy-7- (aniline) -2-naphthalenesulfonic acid endows it with specific reactivity. Hydroxyl groups have certain acidity and can neutralize with bases to form corresponding salts. Sulfonic acid groups are more acidic and can be completely ionized in aqueous solution, making the compound acidic. This acidic property can be used as a catalyst in some chemical reactions to accelerate the reaction process. At the same time, the phenylamino group has certain nucleophilic properties due to the conjugate structure of phenyl ring and amino group, and can participate in nucleophilic substitution reactions. Under appropriate conditions, it can react with electrophilic reagents such as halogenated hydrocarbons to introduce new functional groups, thereby deriving a variety of compounds and providing a rich path for organic synthesis.
In addition, the stability of the compound to light and heat also needs to be paid attention to. In light or high temperature environments, its structure may change, affecting its performance and use. Therefore, when storing and using, care should be taken to control environmental conditions to ensure that the properties of the substance are stable and maintain its due function.

What is the synthesis method of 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid

The synthesis of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is an important matter in chemical preparation. In the past, the method was mostly based on classical organic synthesis.
Naphthalene is first taken as the initial material, and the sulfonation method is used to introduce the sulfonic acid group at the specific position of the naphthalene. In this step, a suitable sulfonation reagent, such as concentrated sulfuric acid or fuming sulfuric acid, needs to be selected. Control its temperature and duration, so that the sulfonation reaction precisely falls on the 2-position of the naphthalene ring to obtain 2-naphthalenesulfonic acid intermediates.
Then, the obtained intermediate is hydroxylated. Hydroxyl groups can be introduced into the 4-position of the naphthalene ring by nucleophilic Among them, it is crucial to choose a suitable nucleophilic reagent, and to adjust the acid-base environment and temperature conditions of the reaction.
Then the phenylamino group is introduced into the 7-position by the method of aromatization. This goal is often achieved by means of condensation reactions such as aniline as raw materials. During the reaction, the choice of catalytic system is very critical, either catalyzed by acid or catalyzed by base, depending on the specific situation.
After each step of the reaction, it needs to be separated and purified, such as recrystallization, column chromatography, etc., to remove impurities and improve the purity of the product. Such steps, in sequence and carefully regulated, can obtain pure 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid. Although there are many steps in the ancient method, careful steps can provide a foundation and reference for today's synthesis.

What is the price of 4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid in the market?

In today's market, the price of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is difficult to determine. The level of its price is determined by various factors.
First, the price of raw materials is the main reason. If the various raw materials of this product are made, the difficulty of picking and refining is different, and the price fluctuates accordingly. If the raw materials are thin and difficult to obtain, the cost will be high, and the price of this product will rise; on the contrary, the raw materials are abundant, and the price will decrease.
Second, the complexity of the process also affects its price. If the method of making is cumbersome, requires exquisite tools and skilled workmanship, and is time-consuming and laborious, the price of the goods will be high; if the craftsmanship is simple and easy, economical and efficient, the price may be close to the people.
Third, the state of supply and demand has a deep impact on the price. If there are many people in the city who need this thing, but there are few people who supply it, the so-called "rare things are expensive", the price will be high; if the supply exceeds the demand, merchants will reduce the price to attract customers in order to sell their goods.
Fourth, the change of the current situation and the difference in taxation are also related to its price. When times are peaceful, commerce is smooth, and prices are stable; if there is turbulence, transportation is blocked, and costs increase, prices will rise. If taxes are heavy, merchants will turn them negative to prices, and prices will also rise.
Looking at the past "Tiangong Kaiwu", the prices of various things vary from time to time, place to place, and situation to situation. Today, 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid is in the market, and its price also follows these laws, or changes from time to time, or varies from situation to situation, and it is difficult to have a constant price. In order to know the exact price, we must carefully consider the current situation of raw materials, technology, supply and demand, and timely taxation, and comprehensively weigh and balance to obtain a more accurate figure.

4-Hydroxy-7- (Phenylamino) -2-Naphthalenesulfonic Acid

4-Hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, which is an important chemical raw material in the field of organic synthesis, is often used in dyes, pigments and other industries. Its manufacturers are all over the world, and today there are several well-known ones. In ancient Chinese, the details are as follows:
First, BASF (BASF). This is a global chemical leader with profound heritage and extraordinary technology. In the manufacture of organic compounds, it is known for its excellence. In the production of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, the craftsmanship is exquisite, the products produced are of high quality, and they are highly praised in the global market. They are sold all over the world and are regarded as the best choice for many downstream industries.
Second, DuPont (DuPont). It is also a chemical giant, with strong R & D power and continuous innovation. In the production of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, it adheres to a rigorous attitude, integrates advanced technology, and has excellent product performance. It is the leader in the high-end market and is favored by many high-end dyes and pigment manufacturers. It is regarded as a symbol of quality and reputation.
Third, there are also many manufacturers involved in this industry. For example, Zhejiang Longsheng has a long-standing reputation in the field of dye chemicals. Its production of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, with its local advantages and unremitting research, the process is becoming more and more mature. The products are not only supplied to China, but also exported to overseas, expanding the international market for our chemical products and making great contributions.
Fourth, Leap Tu Co., Ltd. is also a leader in Huaxia Chemical Industry. In the manufacture of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, a lot of investment, focusing on quality control, the products produced, cost-effective, in the market, quite competitive, providing a stable source of raw materials for many domestic related enterprises.
These companies, or international giants, or domestic elites, in the production of 4-hydroxy-7- (phenylamino) -2-naphthalenesulfonic acid, each shows its strengths and promotes the prosperity of this industry.