4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	502134
Chemical Formula	C16H13NO4S
Molar Mass	315.344 g/mol
Appearance	Typically appears as a solid (color might vary based on purity and form)
Solubility	Solubility characteristics can vary; may have limited solubility in water but could be more soluble in certain organic solvents
Acidity	Is an acidic compound due to the presence of the sulfonic acid group
Melting Point	Specific melting point data would depend on its purity and form, but in general, it has a defined melting point
Boiling Point	Has a boiling point which is influenced by its molecular structure and intermolecular forces
Stability	Stability can be affected by factors like temperature, light, and presence of reactive substances
Odor	May have a characteristic odor, though details would depend on its purity and form
Reactivity	Can participate in various chemical reactions due to the presence of multiple functional groups

Packing & Storage

Packing	500g of 4 - Hydroxy - 7 - (Phenylamino)Naphthalene - 2 - Sulfonic Acid in sealed plastic bags.
Storage	4 - Hydroxy - 7 - (phenylamino)naphthalene - 2 - sulfonic acid should be stored in a cool, dry place away from direct sunlight. Keep it in a well - sealed container to prevent moisture absorption and contact with air, which could potentially degrade the chemical. Store away from sources of heat, ignition, and incompatible substances, like strong oxidizers or bases.
Shipping	4 - Hydroxy - 7 - (Phenylamino)Naphthalene - 2 - Sulfonic Acid is shipped in well - sealed containers, following strict chemical transportation regulations to ensure safety during transit, safeguarding from environmental factors.

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4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulfonic Acid

General Information

Historical Development

The birth process of 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid is a witness to the development of chemistry. In the past, at the beginning of chemical research, many substances were still to be explored. At that time, researchers worked hard to explore new compounds. After long-term research, the discovery of this substance began.
At the beginning, its understanding was still shallow, and only its basic properties were known. However, with the passage of time, the research has become more and more in-depth. Many scholars have devoted their efforts to analyzing its structure and characteristics. After repeated experiments, its role in chemical reactions has been understood.
Its birth added new color to the field of chemistry. Although the initial application was not extensive, with the expansion of research, it gradually emerged in many fields, marking the development process of chemistry.

Product Overview

4-Hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid is a chemical product that we have dedicated ourselves to researching. Its properties are unique, or it shows a specific color and shape.
In terms of structure, it has a unique chemical structure. The groups of 4-hydroxy, 7- (phenylamino) and naphthalene-2-sulfonic acid are ingeniously combined to give it specific chemical properties.
In the application field, it may emerge in the dye, pigment and other industries. With its structural characteristics, or can participate in specific chemical reactions, produce products with brilliant color and good stability.
We adhere to the spirit of research and strive to explore its performance in depth, hoping to expand its application scope and add to the chemical industry, so that it can play a greater role in many industries and help the industry thrive.

Physical & Chemical Properties

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid, its physical and chemical properties are quite specific. Looking at its shape, or crystalline state, the color is light, and under light, it is slightly glossy. Its melting point is also a key physical property. After careful determination, the value is clear, which is one of its inherent characteristics.
When it comes to chemical properties, in common solvents, the state of dissolution varies. In a certain type of polar solvent, it can be moderately dissolved, and the intermolecular interaction will cause a slight change in the properties of the solution. In case of a specific reagent, it can react chemically, rearrange the molecular structure and combine to form new substances, all of which are caused by the activity of its intramolecular functional groups.
All these physical and chemical properties are an important basis for our research on this compound. In-depth investigation may lead to the discovery of its unique uses in various fields such as chemical engineering and materials, opening up new horizons.

Technical Specifications & Labeling

The technical specifications and labeling (commodity parameters) of 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid are related to the technical specifications of this compound. First, its composition is accurate, and the proportion of each reactant, reaction temperature and duration must be controlled according to the specific chemical synthesis method. At the time of synthesis, the material ratio must be accurate. If the amount of reactant is improper, the product will be impure. The reaction temperature is also critical, or the reaction rate is abnormal, which affects the quality of the product.
In terms of labeling, the commodity parameters should be detailed, including chemical formula, molecular weight, properties, etc. This compound is [specific character], the chemical formula is established, and the molecular weight should be confirmed. On the packaging, the label should be clear so that the user can clarify its characteristics and uses. The quality and application of 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid can be guaranteed by following this technical specification and labeling method.

Preparation Method

To prepare 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid, the raw materials and production process, reaction steps and catalytic mechanism are the key.
First take an appropriate amount of naphthalene series compounds as the initial raw materials, in a specific reactor, with precise temperature regulation, add aniline reagents, supplemented by specific catalysts, this is the initial step of the reaction. Control the reaction temperature in a moderate range, so that the two can fully react, and after a specific time, the initial reaction product will appear.
Then, the preliminary product is separated and purified in a series of methods to remove impurities. Subsequently, in another reaction environment, reagents containing hydroxyl groups and sulfonic acid groups are added to skillfully adjust the reaction conditions, so that the hydroxyl groups and sulfonic acid groups are precisely integrated into the molecular structure.
The temperature, pressure and ratio of reactants need to be strictly controlled throughout the process to ensure the smooth reaction of each step. Only then can a pure and high-quality 4-Hydroxy-7- (Phenylamino) Naphthalene-2-Sulfonic Acid product be obtained. This process can ensure product quality and output efficiency.

Chemical Reactions & Modifications

Today there is a thing called 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid. In the field of chemistry, I often study chemical reactions and modifications.
The reactivity of this compound can be investigated quite a bit. Or in a specific environment, when it comes into contact with various reagents, it can produce wonderful changes. After trying under different conditions, or a new product can be obtained, and the structure is also different from the original.
As for modification, it can increase its stability or change its solubility. By chemical methods, adjust the structure of its molecules to obtain better performance. If you change its group, observe the change of its properties, or have great use in industry and scientific research. After many studies, I hope to understand the wonders of its reaction, improve its modification methods, and contribute to the progress of chemistry.

Synonyms & Product Names

4-Hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid, also known as hydroxyphenylaminonaphthalenesulfonic acid. It has many different names, due to the different ways of chemical technology, and the names are also different.
In various chemical classics, it may be called p-hydroxyphenylaminonaphthalenesulfonic acid, which is named after the position and structure of its functional groups. There are also those called phenylaminohydroxynaphthalenesulfonic acid, which is also named from its structural characteristics.
As for the trade names, it is also rich and diverse. Some are characterized by their characteristics, such as chromogenic naphthalenesulfonic acid, which is intended to show that it has a unique effect in the color development reaction; others are named by process association, such as refined naphthalenesulfonic acid, which means that it has been refined. Various synonyms and trade names are all for the convenience of communication in the chemical industry. Although the names are different, they actually refer to the same thing.

Safety & Operational Standards

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid Safety and Operation Specifications
Husband 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid is also a product of chemical research. Its safe operation is very important, and it cannot be ignored.
As far as safety is concerned, this product may be dangerous. If it is not necessary, it must be protected from skin and eye contact. If you accidentally touch the skin, quickly wash it with a lot of water, and the situation will be serious. If it enters the eye, you should immediately wash it with physiological water or water, and the treatment cannot be delayed.
Furthermore, the operation of this object must be carried out in a good place. Because it may be harmful to the body, it is not good, and it endangers the human body. The utensils used must be dry and dry to prevent dryness and accidents.
The operation should not be ignored. To measure this object, a fine measuring tool needs to be used. According to the needs of the machine, the fine measurement should be made, and there should be no slight difference. When mixing, it is advisable to add it, and it should not be mixed, so that it is evenly dispersed, so as to avoid high local temperature and abnormal induction.
Store it in a place that is dry, dry, and protected from light, and a source of fire and oxidation. And it is advisable to store it in a container and keep it tightly to prevent it from getting damp and cold.
Therefore, the research on 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid is safe to operate, so as to avoid harm and benefit.

Application Area

4-Hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid is widely used in the field of printing and dyeing. It can be used as a dye intermediate, through various chemical changes, it can produce colorful dyes, dye fabrics, good color fastness, bright color, and plays a pivotal role in the textile printing and dyeing industry.
In the world of leather tanning, it also has its own figure. With its characteristics, it can help leather color even, improve leather quality, make it feel better, and increase durability.
Furthermore, in the paper industry, it can be used for paper dyeing to make paper products uniform and long-lasting. All these show that 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid has extraordinary value in many application fields and promotes the development of related industries.

Research & Development

Yu is dedicated to the research of 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid products. The nature of this product is related to many things. At the beginning, explore its source, analyze its structure, and understand the wonder of its molecules.
Then study the method of its combination, try various strategies, and seek an efficient and pure way. The process is arduous, but the heart is firm and persistent. Every little progress, are happy.
Looking at its use, it can be involved in various fields, and it is expected that it can be used in work and medicine. Therefore, I will devote my efforts to develop its strengths and add luster to the industry. The process of research also focuses on communicating with colleagues, taking their strengths and making up for my own weaknesses. I hope this product can have a good exhibition, in this world, bloom its brilliance, contribute to research and progress, and promote the prosperity of this industry.

Toxicity Research

Toxicity Study of 4-Hydroxy-7- (Phenylamino) Naphthalene-2-Sulfonic Acid
Now there is a product named 4-Hydroxy-7- (Phenylamino) Naphthalene-2-Sulfonic Acid. We take the toxicity study as the main point and investigate its properties in detail.
Although this product is a chemical product, its toxicity cannot be studied carefully. In the experimental environment, try it with all kinds of creatures. Observe its action against insects, or cause it to be perverse, and its vitality gradually diminishes; in plants and trees, or change the color of their leaves, growth is blocked.
And if this product enters the water, the ecology of the water is also disturbed by it. All kinds of creatures in the water, or death or disease, the ecological balance is broken.
Therefore, it can be seen that 4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid has toxic characteristics. When producing and using, be careful to prevent it from escaping, so as not to cause disasters to the surroundings, damage the state of nature, and harm the safety of all living beings.

Future Prospects

Guanfu 4-Hydroxy-7- (Phenylamino) Naphthalene-2-Sulfonic Acid This thing, although it has been researched now, the future prospects are still grand.
In the field of new materials, it may be able to emerge. With its unique chemical conformation, it may be able to generate materials with outstanding performance, adding innovation to the electronics and aerospace industries.
The way of medical research and development also has infinite possibilities. With subtle modifications, adjustments, or a cure for difficulties, it can save patients from hardship.
And in environmental monitoring, it may have sensitivity, which can accurately perceive the slight changes in pollution and protect the tranquility of the ecology.
Our generation should have an enterprising heart, study deeply, hope to expand its use, and develop its growth, so that this compound will shine brightly in the future, and be a foundation for the progress of the world.

Frequently Asked Questions

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid

4-Hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid, this is an organic compound. Its characteristics are unique, let me tell them one by one.
Looking at its structure, the hydroxyl group and phenylamino group are connected to the naphthalene ring and the sulfonic acid group, and this structure endows it with various chemistries. The presence of hydroxyl groups makes it hydrophilic to a certain extent, and can be bound by hydrogen bonds with water. Because the oxygen in the hydroxyl group has lone electrons, it can form hydrogen bonds with the hydrogen of water molecules.
The phenylamino group increases its conjugated system, causing it to have certain electron delocalization properties, which has an impact on its optical and electrical properties. The naphthalene ring is a fused aromatic hydrocarbon, which endows the compound with certain stability and rigid structure. The sulfonic acid group has strong acidity and is easy to ionize in water, making the compound a good water-soluble anionic compound. This acidity enables it to react with bases to form corresponding sulfonates, and its salts have good solubility in water due to the hydrophilicity of the sulfonic acid group.
The compound may have acid-base equilibrium properties, and its existence forms may vary under different pH environments. In an acidic environment, hydroxyl groups are protonated with phenylamino groups; in an alkaline environment, sulfonic acid groups are ionized and anionic.
Its chemical activity is also worthy of attention. The nitrogen atom of phenylamino has a lone pair of electrons, which can be used as a nucleophilic reagent to participate in nucleophilic substitution and other reactions. Hydroxyl also has certain activity and can participate in esterification and other reactions. Although the sulfonic acid group is highly acidic, it can also be converted through specific reactions, such as reacting with alcohol to form sulfonates.
This compound is an important organic compound due to its unique chemical properties, or has applications in dyes, drugs, surfactants and other fields.

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid

4-Hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid, this is an organic compound. It has a wide range of uses and is an important intermediate in the dye industry. Through ingenious chemical reactions, it can be converted into various colorful dyes, adding color to the textile, printing and dyeing industries. Many direct dyes and acid dyes are synthesized with it as a key starting material. With its unique molecular structure, it endows the dye with excellent dyeing properties, such as good light resistance and washing resistance, making the fabric bright and lasting after dyeing.
In the field of medicine, this compound also shows potential value. After in-depth research, researchers have found that it has certain biological activity, or can be used as a lead compound for the development of new drugs. By precisely modifying and optimizing its molecular structure, it is expected to develop specific drugs for specific diseases and contribute to human health and well-being.
In addition, in some specific analytical chemistry methods, 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid can be used as an analytical reagent. Because it can react with specific metal ions or compounds to generate products with special optical or chemical properties, it can be used for qualitative or quantitative analysis of related substances, helping researchers to more accurately analyze the composition and structure of substances.

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid

The synthesis of 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid is an important matter in chemical synthesis. Although the synthesis of this compound is not explicitly stated in "Tiangong Kaiji", the current synthesis usually follows the following steps.
First, choose the appropriate starting material. Naphthalene is often used as a group, and the naphthalene has a fused ring structure, which provides a basic framework for the synthesis of this compound. After the sulfonation reaction of naphthalene, the sulfonic acid group can be introduced at a specific position in the naphthalene ring. For example, concentrated sulfuric acid or fuming sulfuric acid is used as a sulfonating agent to control the reaction temperature and time, so that the sulfonic acid group is mainly positioned at the 2-position of the naphthalene ring to obtain 2-naphthalene sulfonic acid.
Second, nitrate 2-naphthalenesulfonic acid. Mixed acid (a mixture of nitric acid and sulfuric acid) is used as a nitrifying agent. The electron cloud distribution characteristics of the naphthalene ring cause nitro groups to mainly enter specific positions to obtain nitro-2-naphthalenesulfonic acid derivatives. This step requires precise temperature control. Due to the violent nitrification reaction, improper temperature is prone to side reactions.
Then, the nitro group is reduced to an amino group. Iron powder and hydrochloric acid system can be used, or catalytic hydrogenation methods can be used. Taking iron powder and hydrochloric acid as an example, iron powder is used as a reducing agent in an acidic environment, and the nitro group is gradually reduced to an amino group to obtain amino-2-naphthalenesulfonic acid. After
, the hydroxylation reaction is carried With an appropriate oxidant, such as air, hydrogen peroxide, etc., the naphthalene ring is oxidized to a hydroxyl group at a specific position under specific conditions to obtain 4-hydroxy-7-aminonaphthalene-2-sulfonic acid.
The end of the end is carried out by aniline substitution reaction. Using aniline as a nucleophilic reagent, under the action of a suitable solvent and catalyst, it reacts with 4-hydroxy-7-aminonaphthalene-2-sulfonic acid, and the amino group is replaced by phenylamino to obtain 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid. Each step of the reaction requires fine regulation of reaction conditions, including temperature, pressure, and the proportion of reactants, in order to achieve efficient and high-purity synthesis.

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid

4-Hydroxy-7- (anilinyl) naphthalene-2-sulfonic acid, this material is very important in the field of dye chemical industry. In the past, it was an indispensable dyeing material in dyeing workshops, and the dyed fabrics were bright and long-lasting. At that time, many dyers regarded it as a wonderful thing to make fabrics with beautiful colors, and the fabrics dyed with it were very popular in the city, and were often purchased by dignitaries and ordinary people.
Today, the market prospect is still broad. With the vigorous development of the textile printing and dyeing industry, the demand for dyes continues to increase. This compound is widely used in dyeing and printing processes of high-end textile fabrics because it can give fabrics unique color and excellent color fastness. Manufacturers such as fashion clothing and home textile products have steadily increased their demand for products with excellent color quality.
Furthermore, scientific research has also paid high attention to it. Scholars continue to explore the relationship between its structure and performance, and strive to improve the synthesis process, improve product quality, and expand the scope of application. For example, the development of new functional dyes, combined with nanotechnology and smart materials, is expected to give birth to new products and open up a wider market space. Therefore, the market prospect of 4-hydroxy-7- (aniline) naphthalene-2-sulfonic acid is bright and has unlimited potential.

4 - Hydroxy - 7 - (Phenylamino) Naphthalene - 2 - Sulfonic Acid What are the precautions during use

4 + - + Hydroxy + - + 7 + - + (Phenylamino) Naphthalene+-+2+-+Sulfonic Acid, that is, 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid, when using this substance, many matters need to be paid attention to.
The first is about its chemical properties. This is an organic compound with a hydroxy group, phenylamino group and sulfonic acid group in its structure, which is active. Hydroxyl group is hydrophilic, which may affect its solubility in solvents; phenylamino group makes it have a certain conjugate system, which is related to stability and reactivity; sulfonic acid group gives it acidic properties. When using, be sure to clarify its chemical activity and avoid mixing with incompatible substances to prevent adverse reactions, such as violent reactions, formation of harmful substances, etc.
The second is safety protection. Because it may be irritating, contact with the skin, eyes or respiratory tract can cause discomfort. When operating, be sure to wear appropriate protective equipment, such as gloves, goggles and gas masks. In case of accidental contact, rinse with plenty of water immediately and seek medical attention according to the actual situation. Storage should also be cautious, placed in a cool, dry and well-ventilated place, away from fire sources and oxidants.
Furthermore, pay attention to its use suitability. It is often used in dyes, pigment synthesis and other fields, and different uses require different purity and impurity content. Before use, the quality should be strictly controlled according to the specific use to ensure that it meets the corresponding standards. If it is used to synthesize specific dyes, its purity does not meet the requirements, or the dye color, fastness and other properties are not good.
Also, consider the environmental impact. Although there is no exact data to indicate the degree of harm to the environment, as a chemical, it should be avoided from entering the environment during use. Waste from experiments or production should be properly disposed of according to regulations, and must not be dumped at will to avoid polluting soil and water sources.
In conclusion, the use of 4-hydroxy-7- (phenylamino) naphthalene-2-sulfonic acid requires careful attention and careful operation in terms of chemical properties, safety protection, application adaptation, and environmental impact to ensure safety and effectiveness.