8-Aminonaphthalene-1-Sulphonic Acid

Lingxian Chemical

Specifications

HS Code	319514
Chemical Formula	C10H9NO3S
Molar Mass	223.25 g/mol
Appearance	white to light brown solid
Solubility In Water	slightly soluble
Melting Point	~285 °C (decomposes)
Ph Of Aqueous Solution	acidic due to -SO3H group
Stability	stable under normal conditions, may decompose on heating
Odor	odorless or faint

Packing & Storage

Packing	608 - Aminonaphthalene - 1 - Sulphonic Acid packed in 5 - kg bags.
Storage	8 - Aminonaphthalene - 1 - Sulphonic Acid should be stored in a cool, dry, well - ventilated area, away from sources of heat, ignition, and direct sunlight. It should be kept in a tightly sealed container to prevent moisture absorption and airborne contamination. Store it separately from incompatible substances like strong oxidizers, acids, and bases to avoid potential reactions.
Shipping	8 - Aminonaphthalene - 1 - Sulphonic Acid is shipped in tightly sealed containers, often within robust outer packaging. Special care is taken due to its chemical nature, following strict regulations to ensure safe and proper transportation.

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General Information

Historical Development

The product of 8-aminonaphthalene-1-sulfonic acid has a long history. In the past, all the sages dedicated themselves to studying in the field of chemistry. At the beginning, their understanding was still shallow, and only a few characteristics were known. However, the wise man was unremitting, years and years, with perseverance and keen thinking, repeatedly explored between experiments. After countless attempts, failures and summaries, the method of preparation was finally obtained. With the passage of time, the process has been improved day by day, and the output has gradually increased. From the initial small-scale trial production, to now it can meet the needs of many parties. Its importance in the chemical industry has gradually become apparent, and the path of application has also been continuously expanded. It is the wisdom and hard work of our ancestors that has enabled this product to shine in the long river of history and lay the foundation for future generations of chemical refinement.

Product Overview

8-Aminonaphthalene-1-sulfonic acid is an important category of chemical research. This compound is pure white in color and like a crystalline powder. It is slightly soluble in water, but easily soluble in alkali.
The preparation method is quite complicated. Naphthalene needs to be used as the initial raw material and can be prepared after many steps such as sulfonation, nitrification and reduction. During sulfonation, naphthalene interacts with sulfuric acid to form naphthalene sulfonic acid; followed by nitrification, nitro is introduced; after reduction, the nitro group is converted into an amino group, and finally 8-aminonaphthalene-1-sulfonic acid is obtained.
This product has a wide range of uses. In the dye industry, it is often used as an intermediate to help synthesize colorful dyes. In the field of medicine, it also has potential value, or provides key raw materials for the development of new drugs. However, the preparation process requires fine control of conditions, temperature, reaction time, etc. have a great impact on the purity and yield of the product. Therefore, chemical researchers often study optimization methods to improve their quality and output efficiency.

Physical & Chemical Properties

8-Aminonaphthalene-1-sulfonic acid, the physical and chemical properties of this substance are related to many aspects. Its color state is often specific, or crystalline, or powder shape. Looking at its solubility, in some solvents, or soluble, or insoluble, each has its own characteristics. Its melting point is also a key physical property, which is an inherent feature of substances and reflects the characteristics of internal structure.
When it comes to chemical properties, it has specific reactivity. Due to the existence of amino groups and sulfonic acid groups, it can react with a variety of reagents. Amino groups can participate in nucleophilic reactions, while sulfonic acid groups can exhibit acidic properties under appropriate conditions and neutralize with alkali substances. This substance is used in chemical research and industrial production, and is involved in the synthesis of various compounds due to these physical and chemical properties, or as an intermediate; or because of its unique properties, it is used in specific fields and plays an important role.

Technical Specifications & Labeling

Process Specifications and Labeling (Product Parameters) of 8-Aminonaphthalene-1-Sulfonic Acid
For Fu 8-Aminonaphthalene-1-Sulfonic Acid, the process specifications are related to the preparation method. It is necessary to follow the precise process, the material ratio must be strict, and the reaction conditions must be appropriate. If the reaction temperature is controlled within a certain range, if it is too high, the quality will be volatile, and if it is too low, the effect will not be reached. The reaction time must also be accurate, so as to ensure the purity and yield of the product.
Its identification (product parameters) is very important. Purity is an item, when it reaches a specific standard, the impurity content must be slight. The appearance color is also determined, and it should be a certain And the packaging label should be clearly stated, with its name, content, batch number, etc., for identification and traceability. Therefore, the process specifications and labels (product parameters) are all in line to be qualified 8-aminonaphthalene-1-sulfonic acid products.

Preparation Method

The preparation method of 8-aminonaphthalene-1-sulfonic acid is related to the raw material and production process, reaction steps and catalytic mechanism. The raw material is often taken as naphthalene, and after sulfonation, sulfuric acid is used as the sulfonating agent. The naphthalene reacts with sulfuric acid according to a specific ratio at a suitable temperature and time to obtain naphthalene sulfonic acid.
Then nitrification, nitric acid and sulfuric acid are mixed to form a mixed acid, and naphthalene sulfonic acid reacts with it to obtain nitronaphthalene sulfonic acid. After reduction, the nitro group is converted into an amino group by iron powder, hydrochloric acid or catalytic hydrogenation, etc., to obtain 8-aminonaphthalene-1-sulfonic acid.
The reaction When sulfonation, the temperature should be 160-180 ° C for a long time; the nitrification temperature is slightly lower, about 50-60 ° C; the reduction varies according to the selected method.
In the catalytic mechanism, acid is used as a catalyst for sulfonation and nitrification to change the reaction activity and selectivity; metal catalysts are used for catalytic hydrogenation in reduction to reduce the reaction activation energy, accelerate the reaction, improve the yield and purity, and achieve the purpose of preparation.

Chemical Reactions & Modifications

The chemical reaction and modification of Guanfu 8-aminonaphthalene-1-sulfonic acid are really the focus of our research. In the past, the synthesis method was inconvenient, the yield was not ideal, and the reaction conditions were harsh, requiring high temperature and strong agent, energy consumption was quite huge, and the product also had many impurities.
We have dedicated ourselves to our research. Explore the reaction mechanism in detail and gain insight into the clutch changes between its molecules. Find a new type of catalyst, which can reduce the temperature of the reaction, speed the reaction process, and increase the yield significantly. And optimize the reaction environment, minimize side reactions, and achieve high product purity.
With this improvement, the production of 8-aminonaphthalene-1-sulfonic acid is more efficient and pure. This achievement may be of great use in various fields of chemical industry, which can promote the development of the industry and increase the vitality of innovation.

Synonyms & Product Names

8-Aminonaphthalene-1-sulfonic acid is also synonymous with various names and commodity names. In the course of my chemical research, this substance is often encountered.
In the past, chemists first came into contact with this substance, because its molecular structure contains amino groups and sulfonic acid is based on the naphthalene ring, so it was named 8-aminonaphthalene-1-sulfonic acid by the precise chemical name. However, in the market and in chemical practice, it has another name. Or because of color, nature, or because of process association, it also gets the name of various commodities.
For example, in a certain type of fine chemical process, according to its reaction characteristics and output efficiency, the chemist calls it by a specific trade name, and this trade name becomes one of its trade names. And synonymous names, or slightly different due to academic inheritance and geographical differences, all refer to the same chemical substance. We chemical researchers should make their names clear, so as to facilitate academic communication and industrial application, so as not to be confused.

Safety & Operational Standards

8-Aminonaphthalene-1-sulfonic acid product safety and operating specifications
Fu 8-aminonaphthalene-1-sulfonic acid is also a genus of chemical products. To ensure the safety of its production and use, it is the most important thing to practice.
In the place of production, all equipment should be intact and comply with safety regulations. When the craftsman handles it, he must wear protective equipment, such as masks, gloves, protective clothing, etc., to prevent it from touching the body, or entering the eyes, mouth, and nose. If you accidentally touch it, rinse it with water quickly, and seek medical attention if it is serious.
The method of storing it should also be paid attention to. It should be placed in a cool, dry and ventilated place, away from fire and heat sources, and should not be stored on the same level as oxidants, acids and alkalis to prevent it from changing and causing a dangerous situation.
When using, according to the established law, do not exceed the amount and do not misorder. After use, properly dispose of the remaining materials, and do not discard them at will to avoid polluting the environment.
Furthermore, first aid medicine and utensils should be prepared in the factory, and all craftsmen know the method of first aid. In case of fire, use dry powder or carbon dioxide fire extinguishers to flush it, and do not use water.
In general, everyone must adhere to the safety and operating standards of 8-aminonaphthalene-1-sulfonic acid and not slack off, so as to ensure smooth production, personnel safety, and a peaceful environment.

Application Area

8-Aminonaphthalene-1-sulfonic acid, this compound has a wide range of uses. In the field of dyeing and weaving, it is often the key raw material for the preparation of dyes. The dyes made by it have bright color and good fastness, which can add all kinds of brilliant colors to fabrics. In the context of chemical analysis, it can be used as a reagent to help the accurate detection and analysis of many substances. In the process of drug research and development, it also has potential utility, or can provide an opportunity for the creation of new drugs. Because of its unique chemical structure and properties, it has important value in many application fields, like the key to open the door to many applications, leading the development of many industries, promoting technological progress and production innovation.

Research & Development

The research and development of 8 - Aminonaphthalene - 1 - Sulphonic Acid should not be ignored. This compound has unique properties and has potential in chemical, pharmaceutical and other fields. In the past, scholars have devoted themselves to the exploration of its synthesis path. At first, the synthesis method was cumbersome and the yield was not high. However, Zhu Xian worked tirelessly to study, or to change the reaction conditions or easy reactants, and gradually obtained the refined method. After years, the synthesis technology has become more and more mature, and the yield has also been significantly improved. And the research on its derivatives has gradually started, expanding new ways for its application. Today, the application and exploration in different fields is in the ascendant, and many scholars are still focusing on it, hoping to explore more of its hidden functions in order to promote its further development, add new colors to various industries, and benefit the world.

Toxicity Research

The industry of chemical industry is related to people's livelihood and also involves harm. Today, in terms of 8-aminonaphthalene-1-sulfonic acid, the study of its toxicity should not be ignored.
8-aminonaphthalene-1-sulfonic acid, in chemical production or have its use. However, the study of toxicity, the first way to observe its entry into the body. Oral, percutaneous or respiratory, all can be worried. Eating it orally, it may hurt the viscera; percutaneous contact, or damage the skin; breathing into the lungs, also harmful to qi and blood.
Furthermore, observe its toxicology. Or disturb the normal cells, disorderly the order of metabolism. Biochemical changes can cause dysfunction. It is either the source of mutagenesis or the inherited gene; or it disturbs immunity and causes the body to be weak.
The study of toxicity is not only to clarify its harm, but also to protect it. Workers should be careful and use suitable equipment to avoid its damage. Researchers need to be precise, explore its mechanism, and solve the danger for the world. Hope that with detailed research, we can keep all beings safe and protect the environment. This is the great meaning of toxicity research.

Future Prospects

Today, there is a thing called 8-aminonaphthalene-1-sulfonic acid, which has an extraordinary prospect in the field of my chemical research. This material quality is unique, and it may emerge in various chemical processes.
Looking at the future, first, it is expected to add novel color to the color world in the process of dye creation. With its special molecular structure, it may be able to give birth to dyes with better fastness and brighter color, so that the fabric printing and dyeing, painting pigment and other industries will have a new look.
Second, in the field of pharmaceutical research and development, it may become a key key. Its chemical activity may lead to the design of new drug molecules, helping to overcome difficult diseases.
Furthermore, in the field of material science, material properties can be optimized. After reasonable modification, or to make the material have unique characteristics such as conductivity and adsorption, it can be used in electronic components, environmentally friendly adsorption materials, etc.
Although there is a long way to go, 8-aminonaphthalene-1-sulfonic acid is like a shining star, illuminating our future exploration process, hoping to use its strength to explore the new territory of chemical applications.

Frequently Asked Questions

What are the physical properties of 8-Aminonaphthalene-1-Sulphonic Acid?

8-Aminonaphthalene-1-sulfonic acid, is a kind of organic compound. It has many unique physical properties.
Looking at its appearance, it is often white to light yellow crystalline powder. This state is easy to observe and handle, and is conducive to access and measurement in many chemical operations.
Talking about solubility, the substance is slightly soluble in cold water, but can be better dissolved in hot water. This property is very critical. When separating, purifying and preparing solutions, the effect of temperature on its solubility can be used to achieve specific purposes. For example, after dissolving in hot water, the solute crystallizes and precipitates by cooling to achieve separation from impurities.
In terms of melting point, 8-aminonaphthalene-1-sulfonic acid has a specific melting point value. Melting point is an important physical constant of a substance and can be used to identify the purity of the substance. If the purity of the substance is high, the melting point range is narrow and close to the theoretical value; if it contains impurities, the melting point will be reduced and the melting range will be wider.
Its density is also an inherent property. Although the specific value needs to be accurately measured, the density provides an important reference for determining its distribution in different media and participating in some physical processes, such as mixing and delamination.
In addition, 8-aminonaphthalene-1-sulfonic acid is relatively stable in air, but long-term exposure may also be affected by factors such as oxidation. This requires appropriate protective measures to be taken during storage and use, such as sealing and storing in a dry and cool place to avoid changes in its physical properties and ensure its stable performance in relevant applications.

What are the chemical properties of 8-Aminonaphthalene-1-Sulphonic Acid?

8-Aminonaphthalene-1-sulfonic acid is a kind of organic compound. It has the characteristics of acid, and can dissociate hydrogen ions in water, causing the solution to be acidic.
Looking at its chemical structure, it contains amino groups (\ (- NH_ {2}\)) and sulfonic acid groups (\ (- SO_ {3} H\)). The amino group has a certain basic nature, but the sulfonic acid group is more acidic, so the overall acidity is dominant.
This compound is widely used in the field of organic synthesis. It is often a key intermediate in the preparation of dyes, drugs, etc. Because of its active groups, it can be connected with other compounds through various chemical reactions to form complex organic molecules.
In terms of solubility, the sulfonic acid group has good hydrophilicity, so it has a certain solubility in water. However, the existence of naphthalene rings makes it hydrophobic, and the solubility is not very high.
In terms of thermal stability, it can exist stably under general conditions. However, when heated to a specific temperature, or decomposed due to chemical bond cracking, the specific temperature varies depending on the environment and conditions.
In terms of chemical reactivity, amino groups can participate in acylation, alkylation and other reactions; sulfonic acid groups can react with bases to form salts, and can also participate in the reverse reaction of sulfonation reactions. Many reaction characteristics make it significant for the research and industrial production of organic chemistry, laying the foundation for the creation of a variety of organic materials and products.

What are the main uses of 8-Aminonaphthalene-1-Sulphonic Acid?

8-Aminonaphthalene-1-sulfonic acid, which is white to light gray crystalline powder, is often used in the field of dyes and organic synthesis, and is mostly used as a key intermediate for the preparation of azo dyes.
In dye manufacturing, 8-aminonaphthalene-1-sulfonic acid can react with many diazo salts to generate azo dyes with brilliant color and good fastness. Such dyes are widely used in textile, leather, ink and other industries to impart colorful colors to fabrics, leather and other materials. For example, in textile printing and dyeing, the produced azo dyes can make fabrics show a variety of colors to meet the different needs of the public for fabric color.
In the field of organic synthesis, 8-aminonaphthalene-1-sulfonic acid can participate in many organic reactions because its molecular structure contains active groups such as amino and sulfonic acid groups. Through these reactions, organic compounds with specific structures and properties can be synthesized, providing important raw materials for the development of new materials and the synthesis of pharmaceutical intermediates. For example, in the preparation of some new functional materials, its active groups can be used to introduce specific functional groups, thereby endowing the material with unique properties.
In addition, in the field of chemical analysis, 8-aminonaphthalene-1-sulfonic acid is sometimes used as an analytical reagent to achieve qualitative and quantitative analysis of certain elements or compounds through its chemical reaction with specific substances, assisting researchers in accurately determining the composition and content of substances.

What is the preparation method of 8-Aminonaphthalene-1-Sulphonic Acid?

The preparation method of 8-aminonaphthalene-1-sulfonic acid is not directly described in the ancient book "Tiangong Kaiwu", but it can be deduced according to the principle of chemical industry at that time and similar preparation methods in later generations.
To prepare 8-aminonaphthalene-1-sulfonic acid, naphthalene is often used as the initial raw material. First, the naphthalene is co-heated with concentrated sulfuric acid to carry out a sulfonation reaction. Naphthalene interacts with sulfuric acid at an appropriate temperature, and the sulfonic acid group (-SO-H) replaces the hydrogen atom at a specific position on the naphthalene ring to obtain naphthalene sulfonic acid products. This reaction needs to pay attention to the control of temperature and sulfuric acid concentration. If the temperature is too high or the sulfuric acid is too concentrated, it may cause excessive sulfonation and produce by-products of multi-sulfonic acid substitution; if the temperature is too low or the sulfuric acid is too dilute, the reaction will be slow and the yield will not be good.
Then, the obtained naphthalene sulfonic acid product goes through the nitrification step. The nitro group (-NO 2O) is introduced into the naphthalene ring at a specific check point by reacting with mixed acid (a mixture of nitric acid and sulfuric acid). The nitrification reaction is also dangerous. The preparation of mixed acid should be cautious, and the operation should be done in sequence, and it should be added slowly at low temperature to prevent the danger of violent reaction. At the same time, the introduction position of nitro groups is affected by the localization effect of the original sulfonic acid groups on
Then, the nitro compound is reduced. In the past, the reduction method was carried out by using a system of iron powder and hydrochloric acid. Iron powder in the hydrochloric acid environment has the ability to reduce, and can convert nitro groups into amino groups (-NH2O), resulting in 8-aminonaphthalene-1-sulfonic acid. However, this method will generate a lot of iron sludge waste. In today's environmentally friendly world, more environmentally friendly reduction methods such as catalytic hydrogenation are mostly used. Precious metals such as palladium and platinum are used as catalysts to react hydrogen with nitro compounds under suitable pressure and temperature to realize the conversion of nitro groups to amino groups. This method has high yield and less waste, which is more in line with today's chemical preparation concept.

8-Aminonaphthalene-1-Sulphonic Acid in storage and transportation

8-Aminonaphthalene-1-sulfonic acid is one of the chemical substances. When storing and transporting, many matters need to be paid attention to.
The first thing to pay attention to is its properties. This substance has specific chemical activity and may be dangerous when exposed to heat, open flame or oxidizing agent. Therefore, the storage place should be selected in a cool, dry and well-ventilated place, and must be kept away from fire, heat sources and strong oxidizing agents. The warehouse temperature should be controlled within a reasonable range and should not be too high to prevent chemical reactions.
Next, the packaging must be tight. During transportation, the packaging should be strong to prevent material leakage due to damage. The packaging materials used must be able to withstand certain external forces and environmental changes, and comply with relevant transportation regulations.
In addition, the transportation process also needs to be cautious. Avoid mixing with contraband substances, such as oxidizers, acids, etc. Transportation vehicles need to be equipped with corresponding fire equipment and leakage emergency treatment equipment. On the way, the driver should also drive slowly to avoid bumps and sudden braking to prevent damage to the packaging.
In addition, the storage place should be equipped with obvious warning signs to inform everyone that this is a dangerous chemical, and non-professionals should not approach it. Management personnel need to be professionally trained to be familiar with its characteristics and emergency treatment methods. Regularly check the condition of storage equipment and packaging, and if there is any abnormality, dispose of it immediately.
In this way, to ensure the safety of 8-aminonaphthalene-1-sulfonic acid during storage and transportation.