8-Amino-2-Naphtalenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	941207
Chemical Formula	C10H9NO3S
Molecular Weight	223.25
Appearance	White to light yellow crystalline powder
Solubility In Water	Slightly soluble
Melting Point	180 - 185 °C
Boiling Point	Decomposes before boiling
Pka Value	Around 3.5
Density	1.45 g/cm³
Stability	Stable under normal conditions
Odor	Odorless

Packing & Storage

Packing	500g of 8 - Amino - 2 - Naphtalenesulfonic Acid packaged in a sealed plastic bag.
Storage	8 - Amino - 2 - Naphthalenesulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from sources of heat, ignition, and direct sunlight. Store in tightly closed containers to prevent moisture absorption and exposure to air, which could lead to degradation. Also, segregate from incompatible substances like strong oxidizing agents to avoid potential reactions.
Shipping	8 - Amino - 2 - Naphthalenesulfonic Acid is shipped in well - sealed containers, compliant with chemical transport regulations. Special care is taken to prevent exposure to moisture and heat during transit to maintain its chemical integrity.

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General Information

Historical Development

The origin of 8-amino-2-naphthalenesulfonic acid can be traced back to the research of chemistry in the past. In the past, all the sages tried their best to explore the novelty and use of the substance. When organic chemistry was gradually emerging, this compound was entered into the research.
At the beginning, the researchers only knew its basic properties, but after years of study, it became clear that its structure was exquisite. With the progress of experiments, various synthetic methods have emerged. The method at the beginning is complex and difficult, and the yield is also low. However, the researchers persevered and made unremitting improvements.
To modern times, chemical technology has advanced greatly, and the synthesis method has become simpler and the yield has also increased. Its use is also expanding, in dyes, medicine and other industries, are useful. Looking at its development process, just like a long stream of water, surging forward, the researcher's work must not be absent.

Product Overview

8-Amino-2-naphthalenesulfonic acid is also an organic compound. Its color is white or nearly white, and it is like a powder. It can be used in the field of organic synthesis and is a key raw material for the preparation of dyes, medicine, etc.
The preparation method often involves various reactions such as sulfonation, nitrification, and reduction of naphthalenes. Naphthalenesulfonic acid is obtained by first sulfonation of naphthalenes, followed by nitrification to introduce nitro groups, and then the nitro group is converted to amino groups by reduction, so 8-amino-2-naphthalenesulfonic acid is obtained.
This compound has certain chemical activity and needs to be properly disposed of and stored according to its characteristics in chemical production. Due to its significant role in many fields, it is an important direction of chemical research to explore the method of synthesis optimization and expand the application.

Physical & Chemical Properties

8-Amino-2-naphthalenesulfonic acid, its physical and chemical properties can be studied. Looking at its shape, it is often in a crystalline state, with a white or slightly different color, and the texture is purer. Its melting and boiling point also has characteristics. The melting point is quite high, and it needs to reach a specific temperature before it can melt. This is an important characterization of its thermal strength.
In terms of solubility, it is soluble in water, but the solubility varies depending on water temperature. In organic solvents, there are also specific solubility conditions, which are related to the interaction between molecular structure and solvent. Its chemical properties are also active, and amino groups and sulfonic acid groups can participate in various reactions, such as salting with bases and substituting with certain reagents. It is widely used in the field of organic synthesis.

Technical Specifications & Labeling

8-Amino-2-naphthalenesulfonic acid is an important category of chemical industry. Its process specifications and identification (commodity parameters) are the key.
In the process specification, when preparing, various conditions need to be controlled. The material ratio must be accurate, the reaction temperature is also fixed, or in a specific range, in order to ensure the smooth reaction and obtain a high-purity product. And the reaction time cannot be ignored, and the appropriate value must be reached to make the reaction complete.
When it comes to the identification, the commodity parameters are clear and clear. Purity is a specific standard, and the impurity content is strictly limited. The appearance color is also characterized, or a specific color, particle size and other parameters are also marked in detail, so that the supplier can clarify its quality and make good use of it according to needs. In this way, the chemical can be used in various fields and play its role.

Preparation Method

The preparation method of 8-amino-2-naphthalenesulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism, which is quite critical. Its raw materials are commonly used in naphthalenes, etc., which are prepared by sulfonation, nitration, reduction and other steps.
First take naphthalene as the group, sulfonate with sulfuric acid, so that naphthalenes can obtain sulfonic acid groups. This step requires temperature control and reaction time. Because the temperature is too high or the time is too long, it is easy to cause polysulfonation products. After the sulfonation is completed, nitrification is carried out, and nitro is introduced. Suitable nitrifying agents and conditions need to be selected to ensure that the nitro is accurately placed at the target position.
Subsequently, the nitro group is reduced to When reducing, pay attention to control the reaction conditions to avoid excessive reduction or side reactions. During each step, the product needs to be purified to remove impurities and maintain the purity of the final product. In terms of catalytic mechanism, or use a specific catalyst to increase the reaction rate, reduce the severity of the reaction conditions, and improve the yield and selectivity. In this way, after various steps and considerations, 8-amino-2-naphthalenesulfonic acid can be obtained.

Chemical Reactions & Modifications

8-Amino-2-naphthalenesulfonic acid is also one of the chemical products. In the field of chemistry, its reaction and modification are the key. In the past, the preparation of this product often encountered many difficulties. The reaction conditions are harsh, and it is not easy to obtain pure products.
Looking at the reaction, many factors interact. The temperature is slightly different, the quality and quantity of the product change; the ratio of reagents also affects the path of the reaction. It is by precise control that the best effect can be obtained.
As for the modification, it is designed to expand its use. The modified 8-amino-2-naphthalenesulfonic acid has outstanding performance in the dye, pharmaceutical and other industries. It can make the color of the dye brighter and stronger, and it may have new effects in medicine. This is the result of unremitting research by chemical researchers to improve the reaction and modification.

Synonyms & Product Names

8-Amino-2-naphthalenesulfonic acid is also a chemical product. Its synonym is quite important in the industry.
The title of this product covers many similarities and differences. Or the name 8-amino-2-naphthalenesulfonic acid, also known as the trade name. The variety of synonyms originates from different stages of research and development and application, and the appellation habits of all parties are different.
In the past, when this product was first obtained, it was named according to its chemical structure, so it was called 8-amino-2-naphthalenesulfonic acid. After the market change, merchants established another trade name in order to recognize its characteristics or promote it. However, both refer to the same.
All kinds of synonyms have an impact on communication and research. Therefore, it is indispensable to distinguish their names in the chemical industry. Practitioners should carefully observe their names to avoid confusion, so as to promote research and development and application.

Safety & Operational Standards

Safety and Handling Specifications for 8-Amino-2-naphthalenesulfonic Acid
Fu8-amino-2-naphthalenesulfonic Acid is an important substance in chemical research. The process of its research and preparation requires safe and standardized operation.
First of all, it is about storage. When this substance is placed in a dry, cool and well-ventilated place, it should be kept close to fire and heat sources to prevent accidents. Because of its certain flammability, a little carelessness can lead to disaster.
Furthermore, when operating, appropriate protective equipment must be worn. Such as wearing protective gloves to avoid skin contact, allergies or other damage; wearing protective goggles to protect your eyes from splashing damage.
In the preparation process, strictly follow the established steps. The ratio of materials, the temperature and time of the reaction must be precisely controlled. A slight deviation, or cause abnormal reaction, not only affect the quality of the product, but also endanger safety.
In addition, after the experiment is completed, properly dispose of the waste. Do not discard at will, collect and dispose of in accordance with relevant regulations to prevent environmental pollution.
In short, in the research and operation of 8-amino-2-naphthalenesulfonic acid, be sure to keep safety awareness in mind and strictly abide by the operating norms. In this way, we can ensure the smooth progress of research, the safety of personnel, and the cleanliness of the environment.

Application Area

8-Amino-2-naphthalenesulfonic acid has a wide range of uses. In the field of dyes, it can be used as a raw material for synthesizing a variety of fresh dyes, so that the fabric can be dyed in a colorful way, such as weaving brocade, which is dazzling. In the field of medicine, or involved in the preparation of some pharmaceutical intermediates, it adds to the prescription for curing diseases. In chemical analysis, because of its unique chemistry, it can be used for the detection and analysis of specific substances, just like a discerning eye, which can distinguish subtle differences. And in many industrial processes, it also has its own application, helping various production processes to be smooth, just like gears are indispensable for machinery. This substance shows its important value in various application fields and promotes the development of various industries, such as a boat on water, helping to move forward.

Research & Development

In modern times, chemistry has advanced, and material exploration has deepened. 8 - Amino - 2 - Naphtalenesulfonic Acid This compound has been studied by me for a long time.
At the beginning, its synthesis method was not good, and the yield was quite low. We worked hard, checked the classics, and tried new recipes again and again. Or change the temperature of the reaction, or something that is easy to participate in, after several years, we finally got a good method. The yield is gradually increasing, and the quality is also excellent.
This achievement has been applied more and more widely, adding color and luster to the industry of dyes; in the field of medicine, it also has potential. However, the road of exploration is endless, and I will continue to study it, hoping that it will shine in more fields, be used by the world, and promote the development of chemistry to reach new realms.

Toxicity Research

There is a thing today, named 8 - Amino - 2 - Naphtalenesulfonic Acid, and our generation focuses on the study of poisons. The toxicity of this substance is related to the health of living beings and cannot be ignored.
Observe its properties and analyze it in detail. Between experiments, observe its response to various things, and explore its change into the body. Or observe its effect on the skin, or observe its response to the abdomen, or test its effect of entering the qi.
After many trials, I know its toxicity. Or damage the ability of the viscera, or disrupt the flow of qi and blood, or disturb the peace of the mind. However, if you want to know the details, you need to study it carefully, and you must not neglect it.
We must study the toxicity of this product with a cautious heart, avoid disasters for the world, and ensure the peace of all beings, so as to live up to the intention of our generation's research.

Future Prospects

8-Amino-2-naphthalenesulfonic acid has made its mark in the field of chemistry today, and its future is limitless. This substance has unique properties and has potential for application in many industries.
The current scientific and technological progress of the company is very rapid, and 8-amino-2-naphthalenesulfonic acid may be able to shine in the process of material research and development. It may help create more tough and durable new materials, which can be used in construction and machinery industries to improve the quality of products.
Furthermore, in the field of medicine, after in-depth investigation, its unique pharmacological activity may be discovered, opening up a new path for the research and development of new drugs.
Although the use of 8-amino-2-naphthalenesulfonic acid has not been fully demonstrated at present, with the speed of technological evolution, it will definitely be able to expand its use in the future, bloom brilliantly, and contribute to the progress of mankind.

Frequently Asked Questions

What are the main uses of 8-amino-2-naphthalenesulfonic acid?

8-Amino-2-naphthalenesulfonic acid, also known as peripheral acid, is a crucial raw material in organic synthesis and is widely used in many fields.
In the dye industry, its role is crucial. It can be used as a key intermediate in the synthesis of a variety of dyes. Through a series of chemical reactions, it can be combined with other compounds to construct dye molecules with specific structures and colors. For example, when synthesizing some azo dyes, the amino group and sulfonic acid group of 8-amino-2-naphthalenesulfonic acid can participate in the reaction, which determines the key properties such as color and fastness of the dye, so that the fabric will show a bright color after dyeing and will not fade for a long time.
In the field of medicine, it also plays an important role. Because of its special chemical structure, it can be used as a starting material or intermediate for the synthesis of specific drugs. By modifying and modifying its structure, it endows drugs with specific physiological activities to achieve the purpose of treating diseases. Although not directly used as a drug, it provides an indispensable basis for drug research and development.
In the field of organic synthesis, 8-amino-2-naphthalenesulfonic acid can act as a multifunctional synthesizer due to the activity of amino groups and sulfonic acid groups it contains. It can participate in many organic reactions, such as nucleophilic substitution reactions, condensation reactions, etc., to construct more complex organic molecular structures, laying the foundation for the synthesis of new organic materials, functional compounds, etc., and promoting the development of organic synthetic chemistry.
In summary, 8-amino-2-naphthalenesulfonic acid, with its unique chemical structure, plays a key role in the fields of dyes, medicine, and organic synthesis, and is of great significance to the development of related industries.

What are the physical properties of 8-amino-2-naphthalenesulfonic acid?

8-Hydroxy-2-quinolinecarboxylic acid is a very important organic compound. Its physical properties are unique:
Looking at its appearance, under room temperature and pressure, 8-hydroxy-2-quinolinecarboxylic acid is often light yellow to yellow crystalline powder. This color characteristic makes it easy to distinguish at the visual level, and its purity and state can be preliminarily determined in many chemical experiments and industrial production scenarios.
When it comes to solubility, its solubility in water is relatively limited. However, in some organic solvents, such as ethanol and acetone, it shows good solubility. This difference in solubility is of great significance in the separation, purification and related chemical reaction operations of compounds. For example, in a specific reaction system, a suitable solvent can be cleverly selected according to its solubility characteristics to promote the smooth progress of the reaction or to achieve the purpose of efficient product separation.
Besides the melting point, 8-hydroxy-2-quinolinecarboxylic acid has a specific melting point range. Accurate determination of its melting point is not only the key basis for identifying the compound, but also reflects its purity. If the purity of the compound is very high, the melting point value is relatively stable and in good agreement with the theoretical value; if it contains impurities, the melting point is often deviated, or the melting range is widened. By measuring the melting point, the quality of the product can be effectively controlled to ensure that it meets the corresponding standards and requirements. The physical properties of 8-hydroxy-2-quinolinecarboxylic acid, whether it is appearance, solubility or melting point, play an indispensable role in its research, production and application in the field of chemistry, providing an important reference for relevant workers to carry out various experiments and practical applications.

What are the chemical properties of 8-amino-2-naphthalenesulfonic acid?

8-Amino-2-naphthalenesulfonic acid is an organic compound. Its chemical properties are unique and it has important uses in many fields.
This compound is acidic. Because it contains a sulfonic acid group (-SO-H), this group can dissociate hydrogen ions (H-H) in water, so it is acidic. Its acidity allows it to neutralize with bases to form corresponding salts. For example, when reacting with sodium hydroxide (NaOH), the hydrogen ion in the sulfonic acid group combines with hydroxide ion (OH-H) to form water, while the sulfonic acid group combines with sodium ion (Na-H) to form a sodium salt.
The amino group in 8-amino-2-naphthalenesulfonic acid has a certain alkalinity. The nitrogen atom in the amino group has an unshared electron pair and can bind hydrogen ions, showing weak alkalinity. Under appropriate conditions, it can react with acids to form salts. Like interacting with hydrochloric acid (HCl), the amino group binds hydrogen ions to form positively charged ammonium ions (-NH 🥰 🥰), which are combined with chloride ions (Cl) to form salts.
The compound also has the activity of substitution reaction. The hydrogen atom on the naphthalene ring can be replaced by other atoms or groups under appropriate conditions. Because the amino group and the sulfonic acid group have an impact on the distribution of the electron cloud in the naphthalene ring, the hydrogen atom at a specific position on the naphthalene ring is more easily replaced. For example, under suitable catalysts and reaction conditions, halogenation reactions can occur, and halogen atoms replace hydrogen atoms on naphthalene rings.
In addition, 8-amino-2-naphthalenesulfonic acid can participate in various condensation reactions due to its amino and sulfonic acid groups. For example, amino groups can condensate with compounds containing carboxyl groups (-COOH) to form amide bonds (-CONH -); sulfonic acid groups can also condensate with some alcohol compounds under certain conditions to form sulfonate compounds.
Due to its special chemical properties, 8-amino-2-naphthalenesulfonic acid is widely used in dyes, medicine and other industrial fields, providing key raw materials for the synthesis of many important compounds.

What is the production method of 8-amino-2-naphthalenesulfonic acid?

The preparation of 8-amino-2-naphthalenesulfonic acid is a key skill in the field of chemical preparation. Its preparation follows the path of chemical synthesis and often involves many delicate steps and reactions.
One method is to use naphthalene as the initial raw material. Naphthalene is first sulfonated. Under specific conditions, it interacts ingeniously with sulfuric acid to introduce sulfonic acid groups to obtain naphthalenesulfonic acid intermediates. This step requires precise temperature control, timing control, and concentration and dosage of sulfuric acid. The temperature may be hundreds of degrees Celsius. The reaction takes several hours to make the sulfonic acid group just as needed, and is connected to the naphthalene ring in the right position to build a solid foundation for the subsequent reaction.
Then, the naphthalenesulfonic acid intermediate is applied to nitrification reaction. The mixed acid of nitric acid and sulfuric acid is used as the nitrifying reagent. Under the action of mixed acid, naphthalenesulfonic acid introduces nitro groups to obtain naphthalene derivatives containing nitro groups and sulfonic acid groups. This step requires strict temperature control to prevent side reactions from breeding and causing impure products.
Furthermore, the reduction reaction of naphthalenesulfonic acid derivatives containing nitro groups is carried out. Nitro groups are reduced to amino groups in a system of metals and acids, such as iron and hydrochloric acid, or by catalytic hydrogenation, and 8-amino-2-naphthalenesulfonic acid is finally obtained. In the metal and acid system, iron filings react with hydrochloric acid to generate new hydrogen, which has strong reductivity and can reduce nitro groups; catalytic hydrogenation law uses suitable catalysts, such as palladium carbon, to realize the conversion of nitro to amino groups in hydrogen atmosphere. During the preparation process of
, the precise regulation of each step of the reaction conditions, such as temperature, pressure, reactant ratio and reaction time, is the key. A slight difference in the pool will affect the purity and yield of the product. And after each step of the reaction, it needs to be separated and purified to remove impurities and obtain pure 8-amino-2-naphthalene sulfonic acid, which can meet the needs of subsequent industrial applications or scientific research.

What are the precautions for 8-amino-2-naphthalenesulfonic acid in storage and transportation?

For 8-amino-2-naphthalenesulfonic acid, many matters need to be paid attention to during storage and transportation.
First, moisture resistance is the key. If this substance is damp, it is easy to cause quality deterioration. Due to the intrusion of water vapor, or the initiation of chemical reactions, its purity is reduced, which affects the effect of subsequent use. Therefore, the storage place must be dry, and the packaging should be tightly closed to prevent moisture penetration.
Second, heat avoidance is also important. High temperature environment can make 8-amino-2-naphthalenesulfonic acid unstable. Excessive temperature may cause it to decompose, or accelerate its reaction rate with surrounding substances. Therefore, during storage and transportation, it should be kept away from heat sources and placed in a cool place. If conditions permit, the temperature should be controlled in a suitable range.
Third, anti-oxidation cannot be ignored. This compound has certain reducing properties and is prone to oxidation reaction with oxygen in the air. After oxidation, its chemical structure may change and its function may also be affected. Therefore, the package can be filled with inert gas to isolate oxygen, and the time of contact with air should be shortened as much as possible during storage.
Fourth, shock resistance during transportation is quite important. 8-Amino-2-naphthalene sulfonic acid is subject to severe vibration, or the package may be damaged, which may lead to leakage and other problems. Therefore, the transportation process needs to be smooth, and the loading and unloading should also be handled with care to ensure that the packaging is intact.
Fifth, avoid contact with incompatible substances. 8-Amino-2-naphthalenesulfonic acid will have adverse reactions with specific chemical substances. When storing and transporting, do not mix with acids, alkalis and other substances that may react with it, to prevent accidents.
All of these are for the storage and transportation of 8-Amino-2-naphthalenesulfonic acid should be paid attention to, so as to ensure its quality and safety.