2-Anilino-5-Naphthol-7-Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	507355
Chemical Formula	C16H13NO4S
Molecular Weight	315.34
Appearance	Light - colored powder
Solubility In Water	Slightly soluble
Solubility In Organic Solvents	Soluble in some polar organic solvents
Ph Range Of Solution	Acidic
Melting Point	Around 280 - 285 °C
Boiling Point	Decomposes before boiling
Stability	Stable under normal conditions, but may react with strong oxidizing agents

Packing & Storage

Packing	25 - kg bag packaging for 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid.
Storage	2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, flames, and incompatible substances. Store in a tightly sealed container to prevent moisture absorption and degradation. Avoid exposure to direct sunlight to maintain its chemical stability.
Shipping	2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid is shipped in sealed, corrosion - resistant containers. Transport is via approved carriers following strict chemical safety regulations to prevent spills and ensure safe delivery.

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General Information

Historical Development

2-Anilino-5-Naphthol-7-Sulfonic Acid (2-Anilino-5-Naphthol-7-Sulfonic Acid) is one of the chemical materials. Tracing its origin, at the beginning, the researchers made every effort to create something in the field of chemical industry. In the early years, the academic community did not explore its structure and characteristics in depth, and only knew a little about it.
After years of delay, all kinds of experiments and theoretical derivation of cross-phase are useful. The researchers worked tirelessly to understand its physicochemical properties, and the reaction mechanism was gradually clarified. The evolution of technology has made its preparation method more and more delicate, from the initial simple attempt to the subsequent exquisite process, the yield and purity have been improved.
Its industrial use has gradually expanded, dyeing, weaving, medicine and other industries are involved, and it has become an indispensable material in the chemical industry. Looking at its development, it is actually the condensation of the efforts and wisdom of the researchers, from ignorance to understanding, and steadily moving forward in the tide of science and technology.

Product Overview

2-Anilinyl-5-naphthol-7-sulfonic acid is also a chemical studied by us. This product has unique properties, in the shape of powder, with a white or slightly yellow color. It is slightly soluble in water, and the solubility is slightly increased when heated.
It has a wide range of uses. In the dye industry, it is often the key raw material for the preparation of a variety of brightly colored dyes. After a specific process, it can give fabrics a gorgeous and long-lasting color. In the field of chemical analysis, due to its special chemical properties, it can be used as a sensitive indicator to assist in accurate analysis and determination.
However, the preparation of this product requires following the operating procedures. The ratio of raw materials, the temperature and duration of the reaction are all related to the quality of the product. Slightly poor, or the yield is low, or the quality is not up to expectations. We should take a rigorous attitude and study hard, hoping to make better use of this chemical and add brilliance to the industry.

Physical & Chemical Properties

2-Anilinyl-5-naphthol-7-sulfonic acid, this material property is also special. Its color may be light, and when viewed under light, it has a unique color. Smell, the smell is calm, not very pungent.
In terms of its solubility, it is slightly soluble in water, but it can be well dispersed in specific solvents, showing unique solubility characteristics. Its chemical activity also has characteristics. In some chemical reactions, it can be used as a key reactant and exhibit an active state; in other reactions, it can remain relatively stable.
Its crystal structure is exquisite, and at the microscopic level, the molecules are arranged in an orderly manner, giving it specific physical properties. The melting point and boiling point are both fixed, and these physical properties are key considerations in chemical preparation and application, whether they can be applied to various processes and play their due role.

Technical Specifications & Labeling

Today there is a product called 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid. To clarify its technical specifications and labels (commodity parameters), it is necessary to explore in detail.
At the end of the technical specification, when looking at the preparation method, the geometry of the material used, and the steps, it must be clear. The conditions of the reaction, temperature, pressure, etc., must also not be ignored. The preparation of the equipment, whether it is fine or not, is related to the quality of the finished product.
Discuss the logo (commodity parameters), the appearance of the state, the color and shape, and there should be certainty. The number of purity is crucial, and it is related to its use. Parameters such as solubility and stability are also important to consider.
All of these, the technical specifications and labels (commodity parameters) of 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid need to be carefully studied before they can be understood and used properly.

Preparation Method

The method of preparing 2-amino-5-naphthol-7-sulfonic acid is to prepare the raw materials. The refined naphthalene is taken as the base, and the sulfonation technique is performed to make the naphthalene and sulfuric acid phase merge at a suitable temperature to obtain naphthalenesulfonic acid. Following the nitration method, the nitric acid is added to control the conditions to obtain the nitrosulfonic acid. Then the product is reduced by using a reducing agent such as iron powder to change the nitro group to amino group. After combining with the aniline phase and adjusting the reaction state to obtain 2-aniline-5-naphthol-7-sulfonic acid.
During operation, each step needs to be carefully controlled for temperature, duration and proportion of raw materials. During sulfonation, if the temperature is too high, there will be more by-products, and if it is too low, the reaction will be slow; when nitrifying, the amount of nitric acid and the reaction temperature must be accurate; reduction and synthesis steps also require attention to the reaction state of each substance in order to obtain high-quality products.

Chemical Reactions & Modifications

I have tried to research the industry of chemical industry, especially in 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid. Looking at its chemical reaction, there is something to be investigated. In the past, the reaction may have stagnation, and the yield is not perfect. This is because the reaction conditions are not well controlled, and the preparation of reagents is not accurate.
After thinking about the improvement strategy, changing the temperature system, adjusting the ratio of reagents, hoping to get good results. After many attempts, when the temperature is appropriate and the reagent is just right, the reaction rate increases and the yield also rises. And the quality of the product is better, with few impurities.
From this point of view, the beauty of chemistry exists in the subtle. Only by adjusting the elements of the reaction can we obtain denatured and high-quality products, which are of great benefit to the chemical industry.

Synonyms & Product Names

2-Amino-naphthol-7-sulfonic acid, which has many other names. Although ancient chemistry is not as complete as it is today, the related names of this substance have also evolved.
In the past, it was called by its properties and uses. In the industry, or because its structure contains naphthalene rings and amino groups, sulfonic acid groups, etc., there are those called naphthalamide sulfonic acids. It is also named because of its application in dyes, pigments and other industries, and it is also related to its use.
As for trade names, they also vary with the passage of time. In the past, merchants gave unique names according to their characteristics and processes. Or because of specific formulas, or because of production areas, trade names are diverse. However, the fundamental, all refer to the 2-amino naphthol-7-sulfonic acid of the substance, although the name is complex, but all refer to the same, in the chemical road, evolving, well known in the industry.

Safety & Operational Standards

Specifications for the safety and operation of 2-aminonaphthol-7-sulfonic acid
Fu 2-aminonaphthol-7-sulfonic acid is an important substance in chemical research. During its preparation, storage and application, it is necessary to strictly observe the safety and operation standards to ensure that everything goes smoothly and there is no danger.
When preparing, all raw materials and reagents must be accurately weighed and properly disposed of. Regarding the reaction conditions, such as temperature, pressure, reaction time, etc., it is necessary to strictly control. If the temperature is too high, or the reaction is out of control, it may cause accidents; if the pressure is unstable, it may also endanger the safety of equipment and personnel.
Store this product in a dry, cool and well-ventilated place. Avoid mixing with oxidants, acids, alkalis, etc., to prevent dangerous chemical reactions. Packaging should also be intact to prevent leakage.
When applying, the operator must wear appropriate protective equipment, such as protective clothing, protective gloves, anti-goggles, etc., to prevent this product from touching the skin and eyes. In case of inadvertent contact, rinse with plenty of water as soon as possible and seek medical attention as appropriate.
Furthermore, in the site of use, complete ventilation facilities should be prepared to prevent the accumulation of harmful gases. After use, the remaining products and waste should be properly disposed of in accordance with regulations and should not be discarded at will, so as not to pollute the environment.
In short, in the whole process of 2-aminonaphthol-7-sulfonic acid operation, safety and operating standards are of paramount importance. Only with prudence and compliance with procedures can we create a safe working environment and promote the orderly progress of chemical research and production.

Application Area

2-Aminobenzene-5-naphthol-7-sulfonic acid, this compound has a wide range of uses. In the dyeing and weaving industry, it can be used as a dye intermediate to help with colorful printing and dyeing. After specific processing, it can derive a variety of color dyes to meet the dyeing needs of fabrics, paper and other. In the field of pigment preparation, it also plays a key role. It can be converted into high-quality pigments through chemical reactions and used in paints, inks, etc. to make its colors bright and lasting. In chemical analysis, because of its special chemical properties, it can be used as an analytical reagent to help detect specific substances, providing important data support for scientific research and industrial production. It is indispensable in many application fields.

Research & Development

In recent years, I have been studying chemical products, especially 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid. When I first got involved, I felt that its properties were special, or it was widely used in various fields.
I have devoted myself to studying its craftsmanship. After many trials and errors, I have improved the old method, so that the yield has gradually increased and the quality has also become better. And study its materialized nature, clarify its application to other things, and lay the foundation for its use.
Looking at its development, the prospect is promising. In the dyeing and weaving industry, it can be used as pigments, which are bright and strong; in the field of medicine, or as raw materials, to be further studied. I will continue my efforts, expand its use, and promote its prosperity. I will contribute my little efforts to the advancement of chemical products, hoping to become a great cause and live up to my heart of research.

Toxicity Research

Taste chemical substances, the study of toxicity is of paramount importance and importance. Jin Yan 2 - Anilino - 5 - Naphthol - 7 - Sulfonic Acid This product, the study of toxicity, cannot be ignored.
This substance may have its uses in various fields of chemical industry, but its toxicity is unknown, so it must be studied in detail. In ancient times, the study of poison was to observe its impact on living beings and observe its signs in the body. Today, we should also follow this path, try it with all kinds of living beings, and observe how it eats, moves, and grows.
It is also tested in the environment, placed between water and soil, and observed the changes of the surrounding plants, insects, and fish. If it has serious harm, the water and soil will be inappropriate, and life will be difficult to survive.
The study of toxicity is related to people's livelihood and the safety of the universe. We should do our best to explore its true appearance to ensure that everyone is born without danger and the environment is constant.

Future Prospects

In 2024, I have been studying in the field of chemistry for a long time, and recently I paid attention to the "2-Anilino-5-Naphthol-7-Sulfonic Acid". It has a wide range of uses in many fields of chemical industry, but there is still room for improvement in the current preparation process.
I look to the future, this chemical preparation technology should have a major breakthrough. It may be able to use emerging green chemical methods to greatly increase yield and reduce energy consumption and pollution. Its application scope will also expand, and it will shine in the fields of high-end materials and biomedicine.
Our generation of chemical researchers should have great ambitions and brave exploration of the unknown. Strive to improve the preparation process of this product, open up a new application world, and make unremitting progress for the progress of chemistry and the well-being of mankind, with a view to making a brilliant future.

Frequently Asked Questions

What are the chemical properties of 2-Anilino-5-Naphthol-7-Sulfonic Acid?

2-Anilinyl-5-naphthol-7-sulfonic acid has unique chemical properties. This substance is acidic. Because it contains a sulfonic acid group, it can partially ionize hydrogen ions in water, and can neutralize with bases to generate corresponding salts and water.
From a structural point of view, the naphthalene ring endows it with certain stability and conjugate system characteristics. The existence of the aniline group makes the compound have a certain nucleophilicity. Because the nitrogen atom has lone pair electrons, it can participate in nucleophilic reactions.
In terms of solubility, due to the strong hydrophilicity of the sulfonic acid group, it has a certain solubility in water, but the hydrophobicity of the naphthalene ring and the aniline group will limit its solubility.
In the chemical reactivity, the substitution reaction can occur on the naphthalene ring, and the positioning effect of the sulfonic acid group will affect the position of the substituent entering. And the amino group of the aniline group can be acylated, alkylated, etc., and may also participate in the redox reaction.
Because its structure contains multiple chromophore groups, it is widely used in the field of dye chemistry. It can be used as a key intermediate for synthesizing dyes. It can use its reactivity to construct dye molecules with diverse structures to provide colorful dye products for textile, printing and dyeing industries.

What are the main uses of 2-Anilino-5-Naphthol-7-Sulfonic Acid?

2-Amino-5-naphthol-7-sulfonic acid, also known as turbolic acid, its main uses are as follows:
Turbolic acid is a key intermediate in the dye industry, and it shoulders an indispensable role in the preparation of many dyes. First, in the synthesis of azo dyes, turbolic acid can be used as a diazo component or a coupling component. With its specific chemical structure, it can be reacted with other compounds through diazotization, coupling, etc., to generate azo dyes with good color fastness. These azo dyes are widely used in the textile printing and dyeing industry, giving fabrics a variety of colors, such as cotton, linen, silk, wool and other fiber fabrics, can achieve brilliant dyeing with this type of dye.
Second, in the preparation of reactive dyes, testoic acid also plays an important role. Reactive dyes have the property of forming covalent bonds with fibers, so they have excellent dyeing fastness and are favored by the textile industry. Testoic acid as a raw material participates in the synthesis of reactive dyes, which can effectively improve the performance of dyes and enhance their reactivity with fibers, thus making the dyeing effect more ideal and ensuring the lasting and bright color of fabrics.
Third, testoic acid also occupies a place in the field of organic pigment manufacturing. Organic pigments are often used in inks, coatings, plastics and other industries to provide the desired color. By specific chemical modification and reaction of testoic acid, organic pigments with high coloring power, good light resistance and heat resistance can be prepared to meet the strict requirements of different industrial fields for color.
In summary, 2-amino-5-naphthol-7-sulfonic acid, as an important organic intermediate, plays a pivotal role in the development of dyes and related industries, and greatly promotes the progress and prosperity of related industries.

What is the preparation method of 2-Anilino-5-Naphthol-7-Sulfonic Acid?

The preparation method of 2-phenylamino-5-naphthol-7-sulfonic acid, also known as J acid, used to follow the following steps.
The first refined naphthalene is taken and sulfonated with concentrated sulfuric acid. During sulfonation, naphthalene molecules interact ingeniously with sulfuric acid, and sulfate gradually enters the naphthalene ring, mainly forming α-naphthalenesulfonic acid. This reaction requires attention to many factors such as temperature and sulfuric acid concentration. The temperature and the intensity of sulfuric acid can cause the reaction direction to change with the proportion of the product.
Next, α-naphthalenesulfonic acid is transformed into β-naphthalenesulfonic acid through translocation reaction with the assistance of mercury Mercury salts are like a magical guide here, leading the reaction along a specific path to efficiently obtain β-naphthalenesulfonic acid.
Then, β-naphthalenesulfonic acid is nitrified with mixed acid (a mixture of nitric acid and sulfuric acid), and nitro groups are introduced precisely at specific positions in the naphthalene ring to obtain 2-nitro-5-naphthol-7-sulfonic acid. Conditions such as the ratio of mixed acid, reaction temperature and time have a great influence on the location and degree of nitro introduction, and need to be carefully regulated.
Subsequently, with the power of iron powder, hydrochloric acid and other reducing agents, the nitro group in 2-nitro-5-naphthol-7-sulfonic acid is reduced to an amino group, and then 2-aniline-5-naphthol-7-sulfonic acid is formed. The dosage of iron powder, hydrochloric acid, and the pH of the reaction environment are all related to the effectiveness of the reduction reaction and the purity of the product.
In this preparation method, each step of the reaction is closely connected, and the operation of any link is slightly poor, which may lead to impurity or low yield of the product. Therefore, when operating, we must be cautious and act according to precise conditions and procedures to obtain satisfactory 2-anilinyl-5-naphthol-7-sulfonic acid products.

What are the precautions for 2-Anilino-5-Naphthol-7-Sulfonic Acid in storage and transportation?

2-Anilinyl-5-naphthol-7-sulfonic acid, which is an important organic compound in fine chemicals, many points should be paid attention to during storage and transportation.
First words storage. First, it needs to be placed in a cool and dry place. If the substance encounters moisture, it is easy to cause deliquescence, causing its quality to be damaged; if the temperature is too high, it may cause its chemical properties to change and accelerate deterioration. Second, ensure that the storage environment is well ventilated. This substance may evaporate certain gases, poor ventilation, and gas accumulation, which may affect the surrounding air quality. Second, there may be potential safety hazards, such as the formation of flammable and explosive mixed gases. Third, it should be stored separately from oxidizing agents, acids, alkalis, etc. Because of its active chemical properties, contact with these substances is prone to chemical reactions, or serious consequences such as combustion and explosion. Fourth, the storage container must be tightly sealed. Prevent it from coming into contact with air, avoid oxidation, and prevent volatilization and reduce losses.
Let's talk about transportation again. Transportation vehicles need to take protective measures, and the carriages should be kept clean and dry to avoid residual other chemicals from reacting with them. The loading and unloading process must be handled with care. This substance may have certain sensitivity. Rough loading and unloading can easily cause packaging damage, which not only causes material loss, but also leaks or pollutes the environment, endangering human health. During transportation, pay close attention to changes in temperature and humidity, and take timely control measures. In case of long-distance transportation, it is necessary to strengthen the inspection to ensure that the packaging is not damaged and the material is safe. In short, the storage and transportation of 2-aniline-5-naphthol-7-sulfonic acid must be treated with caution and follow relevant specifications to ensure its quality and safety.

2-Anilino-5-Naphthol-7-Sulfonic impact of Acid on the environment

2-Anilinyl-5-naphthol-7-sulfonic acid, the impact of this substance on the environment is related to many aspects. Its chemical properties are unique. If it does not enter the natural water body carefully, it can cause changes in the chemical composition of the water body due to its sulfonic acid group, or cause slight changes in the pH of the water body, affecting the habitat of aquatic organisms. Aquatic organisms are sensitive to changes in water quality, or cause their physiological disorders, and their growth and reproduction are blocked.
In the soil environment, if the waste containing this substance accumulates or leaks, its molecular structure or interacts with soil particles, changing the physical and chemical properties of the soil and affecting the structure and function of the soil microbial community. Microorganisms are crucial in soil material circulation and nutrient transformation, and their disturbance affects soil fertility, which in turn affects plant growth.
And it may have a certain degree of bioaccumulation, passed through the food chain, and gradually accumulated in higher organisms from lower organisms. If humans eat contaminated organisms, it may threaten human health and cause potential health risks, such as affecting the human metabolic system and interfering with endocrine. Therefore, when producing and using this substance, environmental protection measures should be taken to prevent it from escaping, so as to protect the ecological environment and human well-being.