4-Amino-1-Naphthalene Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	803637
Chemical Formula	C10H9NO3S
Molecular Weight	223.25 g/mol
Appearance	Light yellow to brownish crystals or powder
Solubility In Water	Slightly soluble
Melting Point	199 - 201 °C
Pka Value	Around 3 - 4 (approximate acidic dissociation constant)
Odor	Odorless or very faint odor
Density	Approx. 1.4 - 1.5 g/cm³
Stability	Stable under normal conditions, may decompose on heating
Reactivity	Reactive with strong oxidizing agents

Packing & Storage

Packing	25 - kg bags of 4 - Amino - 1 - Naphthalene Sulfonic Acid with secure chemical - resistant packaging.
Storage	4 - Amino - 1 - Naphthalene Sulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, flames, and oxidizing agents. Store in tightly - sealed containers to prevent moisture absorption and contact with air, which could potentially lead to decomposition or degradation of the chemical.
Shipping	4 - Amino - 1 - Naphthalene Sulfonic Acid is shipped in sealed, corrosion - resistant containers. It must be transported in accordance with hazardous chemical regulations, avoiding exposure to heat, moisture, and incompatible substances.

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General Information

Historical Development

4-Amino-1-naphthalenesulfonic acid, an ancient chemical. Its origin originated in the exploration of the past. At that time, all the sages studied the way of chemistry diligently, hoping to gain something.
At the beginning, the knowledge of the nature of matter and the law of change was still shallow. However, everyone was unremitting, with the determination of perseverance, to explore the details. After a long time of trial and error, summary, the beginning of this compound gradually became clear.
Years pass, technology is gradual. The craftsmen improved the production method and increased the output, so that 4-amino-1-naphthalenesulfonic acid was gradually used in various fields. It is an important process in the history of chemistry from the initial ignorance and inquiry to the ability to use it to add luster to production and life. Its development also testifies to the gradual deepening of human understanding of chemistry and the spirit of unremitting pursuit of progress.

Product Overview

4-Amino-1-naphthalenesulfonic acid is a kind of organic compound. Its shape or crystalline powder, white or yellowish in color. This compound is widely used in dyes, medicine and other fields.
In the preparation of dyes, 4-amino-1-naphthalenesulfonic acid is a key intermediate. By chemical synthesis, it can be converted into dyes of various colors, with bright color and good fastness. In medicine, it also has potential medicinal value, or participates in drug synthesis, and has auxiliary effects on the treatment of specific diseases.
Preparation of this compound, often using naphthalene as the starting material, is obtained by several steps of sulfonation, nitrification, reduction, etc. However, the preparation process requires fine control of reaction conditions, such as temperature, pH, etc., to ensure the purity and yield of the product.
In short, although 4-amino-1-naphthalenesulfonic acid is a tiny compound, it plays a significant role in many fields and contributes a lot to industrial production and scientific research development.

Physical & Chemical Properties

4-Amino-1-naphthalenesulfonic acid is also a chemical product. Its material has various physical and chemical properties. Looking at its color, it is often white to slightly yellow crystalline. In terms of its solubility, it has a certain degree of solubility in water and can be dispersed in liquid. This is because the molecular structure is in harmony with water.
In terms of its stability, it is still said to be stable at room temperature and pressure. However, when it encounters hot topics and strong oxidizing agents, it is easy to change, and the structure or breakage will also change. Its melting point is specific. As one of the evidence of this product, when heated to this temperature, the state of matter is changed from solid to liquid, and the force between molecules changes.
And its acidity is also an important property. Because it contains a sulfonic acid group, it can release protons in an appropriate environment and is acidic. This property has a great impact on the reaction, separation and purification processes.

Technical Specifications & Labeling

4-Amino-1-naphthalene sulfonic acid is an important product in the chemical industry. Its technical specifications and identification (commodity parameters) are related to the quality and application effect.
The production of this product requires a rigorous process. From the selection of raw materials, it is necessary to be pure and fine, and impurities are not present to ensure the purity of the product. During the reaction, temperature, duration, and material ratio are all key. High temperature makes the quality variable, short time should be incomplete, and wrong mix makes the yield low. On the
logo, the name and chemical formula should be clear, and 4-Amino-1-Naphthalene Sulfonic Acid cannot be wrong. The content of ingredients needs to be accurately marked, which is the certificate of quality. In addition, for storage and transportation, it is necessary to indicate anti-moisture, heat avoidance and other items to ensure its stability. In this way, it is accurate to meet the technical specifications and labels, so that the products can be used in the market for the needs of all parties.

Preparation Method

The preparation of 4-amino-1-naphthalenesulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism. To prepare this product, naphthalene is often used as the initial raw material. Naphthalene is first sulfonated, and sulfuric acid is used as the sulfonating agent. At a suitable temperature and time, naphthalene reacts with sulfuric acid to form naphthalenesulfonic acid isomers. Subsequently, through nitration reaction, nitro is introduced, and mixed acid of nitric acid and sulfuric acid is selected to precisely control the reaction conditions to obtain the product of nitro-containing naphthalenesulfonic acid. Then the nitro group is converted into amino group by reduction means. Reducers such as iron powder and hydrochloric acid can be used to obtain 4-amino-1-naph Finally, the pure 4-amino-1-naphthalenesulfonic acid product is obtained through separation, purification and other processes, such as crystallization, filtration, washing, etc. In this process, the choice of catalyst and the control of reaction conditions have a great influence on the purity and yield of the product.

Chemical Reactions & Modifications

The modification of 4-amino-1-naphthalenesulfonic acid has been in place since ancient times. In the past, in order to obtain this compound, it was necessary to do the same. Its inversion is also different due to the quality of the product and the quality of the product.
Initially, the sulfonic acid group was introduced by the method of naphthalenes and sulfonation, and the position and degree were controlled. If you want to add an amino group, the inversion process is difficult, and it is often necessary to use the appropriate catalysis to promote the inversion.
People think about the way of modification, or improve the solubility, or increase the quality. Repair with different bases to explore the properties of it. It is known that this compound can be modified in multiple domains, such as dyes and materials, all of which are effective in anti-modification.

Synonyms & Product Names

4-Amino-1-naphthalenesulfonic acid, which has many other names. Although the ancient books do not contain its name, the names of the chemical industry are different today. Or 1-naphthalamine-4-sulfonic acid, also known as p-aminonaphthalenesulfonic acid.
Various commodities in the market have different names. Merchants recognize their characteristics or take names that are easy to remember. In the industry, these nicknames and trade names are well known to people in the industry. 4-Amino-1-naphthalenesulfonic acid has a wide range of uses and is important in dyes, medicine and other industries. It is necessary to know its many nicknames and trade names, and to do everything in the industry.

Safety & Operational Standards

Safety and Handling Specifications for 4-Amino-1-naphthalenesulfonic Acid
4-Amino-1-naphthalenesulfonic Acid is a common substance in chemical research. If you want to use it properly, you must understand its safety and handling specifications.
In terms of storage, choose a cool, dry and well-ventilated place. Avoid co-storage with oxidants, acids, etc. to prevent their chemical reactions from causing danger. Sealed and stored, it can prevent moisture and air from invading, and keep its chemical properties stable.
During operation, all kinds of protection are essential. Protective clothing, protective gloves and goggles must be worn to prevent substances from contacting the skin and eyes. If you are working in a poorly ventilated area, you must prepare effective ventilation equipment or wear a gas mask to avoid inhaling harmful gases.
When using, the operation should be cautious. Measure the medicine, when using precise instruments, take the amount required by the experiment, not more or less. Stir and mix, the action should be slow, to avoid violent vibration caused by liquid splashing. If you accidentally contact the skin, rinse quickly with a lot of water. If the situation is serious, treat it urgently. If there is a material leakage, do not panic, stop the operation immediately and evacuate the personnel. Small leaks, absorb with inert materials such as sand and vermiculite; large leaks, containment and collection, and hand it over to professional institutions for treatment.
In short, in the research and use of 4-amino-1-naphthalenesulfonic acid, strict adherence to safety and operating standards can ensure personnel safety and ensure the smooth operation of the experiment.

Application Area

4-Amino-1-naphthalenesulfonic acid has a wide range of uses. In the dye industry, it can be used as a raw material for the preparation of a variety of fresh-colored dyes. The resulting dyes have good color fastness and are applied to fabric dyeing, which can make the color of fabrics last for a long time. In the field of medicine, it also has important uses. It can be used as an intermediate for the synthesis of specific drugs, helping to develop good drugs for treating various diseases, and providing more help for doctors to treat diseases. And in the field of chemical analysis, it also has a place, which can be used for qualitative and quantitative analysis of certain substances, making the analysis results more accurate and helping to deepen chemical research. From this perspective, 4-amino-1-naphthalenesulfonic acid plays an important role in various application fields and promotes the development of related industries.

Research & Development

Yu Yan Chemical Products, recently focused on 4 - Amino - 1 - Naphthalene Sulfonic Acid. This compound is of great significance in the field of chemical industry.
Yu scrutinized its characteristics and explored the preparation method. At the beginning, the selection of raw materials was cautious, and the conditions were finely regulated, but the process was difficult. The reaction rate and product purity are all difficult questions.
In order to solve the problem, I read books and visited various houses. Adjust the reaction temperature and pressure to make it easier to catalyze. After repeated tests, the method was gradually obtained. The purity of the product was improved, and the output also increased.
Looking to the future, we should continue to improve. Optimize the process, reduce costs and increase efficiency. This compound has a broad application prospect and may emerge in the fields of new materials and medicine. Yu should make unremitting efforts to promote its development and contribute to the chemical industry.

Toxicity Research

Today there is a product, named 4 - Amino - 1 - Naphthalene Sulfonic Acid, and we are studying its toxicity. This product has many applications in chemical fields, but the study of its toxicity is quite important.
After various tests, it can be known that it may have various effects on the body of living beings. In microscopic insects, the vitality is gradually lost when touched; in green plants, it also hinders its vitality, causing the leaf color to wither and growth to slow down.
And when it enters the water body, the ecological chaos of the water is chaotic, and the floating things are difficult to survive, and the water quality also changes. The strong toxicity can be viewed. Therefore, it is the important task of our chemical researchers to study its toxicity, find ways to prevent and avoid it, and make this substance suitable for use without harming life and nature.

Future Prospects

4-Amino-1-naphthalenesulfonic acid, the chemical substance of today. Our generation is looking forward to the future in the research and exploration of things.
This substance has unique chemical properties and may be useful in many fields. Looking at the progress of science and technology, with each passing day, 4-amino-1-naphthalenesulfonic acid may be able to emerge in the creation of materials, adding to the rise of new materials. In the field of chemical synthesis, it can optimize the path, increase efficiency and reduce wear and tear.
Furthermore, there are also opportunities in the way of pharmaceutical research and development. If it can be used well, it may help the birth of new drugs and cure diseases for the world. Although the road ahead is long, we scientific researchers should explore the future possibilities of 4-amino-1-naphthalenesulfonic acid with determination and fearlessness, hoping to open up new horizons and benefit the world.

Frequently Asked Questions

What are the main uses of 4-Amino-1-Naphthalene Sulfonic Acid?

4-Amino-1-naphthalenesulfonic acid, this substance has a wide range of uses. In the dyeing and weaving industry, it is often used as a dye intermediate. Due to its unique structure, it can undergo various chemical reactions to produce a wide variety of dyes, such as azo dyes, which add color and brightness to fabrics, with rich color and good fastness.
In the field of medicine and chemical industry, it also has important uses. Its molecular properties can be used as raw materials or intermediates for the synthesis of specific drugs, helping to develop new drugs and contributing to the healing of diseases.
In the field of chemical research, it is an important organic synthesis reagent. Scientists use it to carry out various reaction explorations, gain insight into reaction mechanisms, and expand organic synthesis methods, which has greatly contributed to the progress of organic chemistry theory and practice.
In addition, in some industrial production processes, or as an auxiliary agent, optimize the production process and improve product quality. In summary, 4-amino-1-naphthalenesulfonic acid plays an indispensable role in many industries, with a wide range of uses and key uses.

What are the physical properties of 4-Amino-1-Naphthalene Sulfonic Acid?

4-Amino-1-naphthalenesulfonic acid, its physical properties are quite unique. Looking at its shape, at room temperature, it is mostly in the state of white to slightly yellow crystalline powder, just like the first snow in winter, delicate and pure. It smells, but has no obvious smell, like an indifferent thing hidden in the world, without showing its own breath.
When it comes to solubility, this substance is soluble in water, and dissolves more smoothly in hot water, just like a fish getting water and can quickly melt with water. In organic solvents, such as ethanol, ether, etc., its solubility is poor, as if there is an invisible barrier between these organic solvents, making it difficult to combine intimately.
Then again, its melting point is about 280 ° C, and it needs a considerable amount of heat to convert it from solid to liquid. The high melting point also highlights the stability of its structure, just like a strong fortress, which requires a strong external force to break its original form.
Its density is about 1.62g/cm ³, and it has a certain sense of quality. Although it is invisible, it shows its existence with its density characteristics when interacting with other substances. The physical properties of 4-amino-1-naphthalenesulfonic acid make it have unique uses in many fields, silently contributing its own strength to the process of industry and scientific research.

4-Amino-1-Naphthalene chemical properties of sulfonic acid

4-Amino-1-naphthalenesulfonic acid is a special category of organic compounds. It has the characteristics of acid. In aqueous solution, it can be slightly ionized and release hydrogen ions, showing acidity. This acidity enables it to neutralize and react with alkali substances to generate corresponding salts and water.
Furthermore, the presence of amino groups in this compound gives it a certain alkalinity. The nitrogen atom of the amino group has a lone pair of electrons, which can be combined with protons and exhibit basic characteristics under specific conditions. It can react with acids to form salts.
The sulfonic acid group and amino group of 4-amino-1-naphthalenesulfonic acid are both active functional groups. The sulfonic acid group can participate in the reverse reaction of the sulfonation reaction, etc.; the amino group can participate in the amidation reaction, etc., and interact with the acylation reagent to form amide compounds. At the same time, due to the existence of the conjugate system of the naphthalene ring, this compound has certain stability and special optical properties, and shows unique performance in light absorption. Because its structure contains multiple reactive functional groups, it is often used as a key intermediate in the field of organic synthesis to prepare a variety of organic compounds with different functions, and is widely used in dyes, medicine and other industries.

What is the production method of 4-Amino-1-Naphthalene Sulfonic Acid?

The method of preparing 4-amino-1-naphthalenesulfonic acid used to follow the method of sulfonation and amination in the past. First, naphthalene is used as the starting material, and 1-naphthalenesulfonic acid is prepared by sulfonation reaction. This reaction requires specific temperature and catalyst conditions, and sulfonation reagents such as sulfuric acid are used to react with it. 1-naphthalenesulfonic acid is obtained after repeated nitration reaction to obtain 1-nitro-4-naphthalenesulfonic acid. This step requires attention to the control of the reaction conditions to ensure that the nitro group is introduced into the desired position accurately.
Then, a reduction step is applied to 1-nitro-4-naphthalenesulfonic acid to obtain 4-amino-1-naphthal The method of reduction is often the system of iron powder and hydrochloric acid, or the method of catalytic hydrogenation. Taking the system of iron powder and hydrochloric acid as an example, the iron powder generates ferrous ions under the action of hydrochloric acid, and the ferrous ions can gradually reduce the nitro group to the amino group to achieve the preparation of the target product.
Another way is to nitrate the naphthalene to obtain 1-nitronaphthalene, and then sulfonate it. Introduce the sulfonic acid group at the 4 position, and then reduce the nitro group to the amino group. The same 4-amino-1-naphthalene sulfonic acid can be obtained.
During the preparation process, the reaction conditions at each step need to be carefully regulated. Factors such as temperature, the proportion of reactants, and reaction time all have a significant impact on the yield and purity of the product. And after each step of the reaction, it is often necessary to separate and purify the product by means of recrystallization and extraction to obtain high-purity 4-amino-1-naphthalenesulfonic acid.

4-Amino-1-Naphthalene Sulfonic Acid in storage and transportation

4-Amino-1-naphthalenesulfonic acid is a commonly used chemical substance. During storage and transportation, many matters need to be paid attention to.
First words storage. This substance should be stored in a cool, dry and well-ventilated place. If the environment is humid, it is easy to cause moisture and deterioration, which affects the quality. And it needs to be kept away from fires and heat sources to prevent fires. In addition, it should be stored separately from oxidants and alkalis, and must not be mixed. The cover should be stored because it encounters these substances or has a violent chemical reaction, which endangers safety. At the same time, the storage place should be prepared with suitable materials for containing leaks to prevent accidents.
As for transportation, caution is also required. The transport vehicle must ensure that the vehicle is in good condition, and equipped with the corresponding variety and quantity of fire-fighting equipment and leakage emergency treatment equipment. During transportation, it should be protected from exposure to the sun, rain, and high temperature. When handling, it should be lightly loaded and unloaded, and it is strictly forbidden to drop and heavy pressure to avoid material leakage caused by package damage. During transportation, it is also necessary to drive according to the specified route, and do not stay in densely populated areas and busy cities for a long time. In this way, 4-amino-1-naphthalene sulfonic acid can be safely stored and transported, and it will not cause harm.