8-Aminonaphthalene-2-Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	248436
Chemical Formula	C10H9NO3S
Molar Mass	223.25 g/mol
Appearance	white to light yellow crystals or powder
Solubility In Water	slightly soluble
Melting Point	287 - 290 °C
Density	1.52 g/cm³
Odor	odorless
Ph Aqueous Solution	acidic
Stability	stable under normal conditions
Hazardous Decomposition Products	sulfur oxides, nitrogen oxides

Packing & Storage

Packing	500 - gram bags of 8 - Aminonaphthalene - 2 - Sulfonic Acid, well - sealed for chemical storage.
Storage	8 - Aminonaphthalene - 2 - Sulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, open flames, and oxidizing agents. Store in a tightly sealed container to prevent moisture absorption and potential reactions. Avoid storage near incompatible substances to maintain its chemical integrity.
Shipping	8 - Aminonaphthalene - 2 - Sulfonic Acid is shipped in well - sealed containers. It's transported in accordance with chemical shipping regulations, ensuring proper containment to prevent spills and safeguarding the environment and handlers during transit.

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General Information

Historical Development

8-Aminonaphthalene-2-sulfonic acid, the prosperity of its products can be dated. In the past, the chemists spared no effort in the study of materials. The initial appearance of this acid depends on the exquisite methods and diligent exploration of various families. At the beginning, the craftsmen in the laboratory, with various materials, through complex reactions, to obtain the prototype of this acid. As the years go by, the researchers improve their skills and optimize the process, so that the yield gradually increases and the quality is better. From rare at the beginning, to gradually used in various fields, such as dyeing and weaving, with its properties, it adds brilliant color to the fabric. And in other parts of the chemical industry, it also develops its capabilities. The rise of this acid is a significant advance in chemical research, witnessing the wisdom and diligence of all sages, and also paving the way for future generations to use their materials and expand their domains.

Product Overview

8-Aminonaphthalene-2-sulfonic acid is in a crystalline state. Looking at its chemical properties, it has the characteristics of acid. In the field of chemical industry, it has a wide range of uses. It can be used as a raw material for dye synthesis. Through many delicate reactions, colorful dyes can be obtained. Applied to fabric printing and dyeing, the color is bright and lasting.
also plays a key role in the preparation of some chemical preparations. In its molecular structure, the synergy of amino groups and sulfonic acid groups gives unique chemical activity. However, when preparing, it is necessary to strictly control the reaction conditions, such as temperature, pH, etc., with a slight difference, or the product is impure. And because it has certain chemical activity, it needs to be properly disposed of during storage to prevent deterioration and affect its subsequent use.

Physical & Chemical Properties

8-Aminonaphthalene-2-sulfonic acid, its physical and chemical properties are crucial. Looking at its shape, at room temperature, it is often in a crystalline state, and the color is white, like the purity of frost and snow. Its taste is barely noticeable, hidden in the physical properties.
In terms of its solubility, it is soluble in water, just like salt in soup, but not infinite, moderate water can hold an appropriate amount of the substance. In organic solvents, there are also different performances. For example, in ethanol, it is slightly easier to dissolve, like fish getting water, while in benzene, it is quite difficult to dissolve, like a square chisel.
Its melting point, after accurate measurement, has a fixed number of existence, reaching a specific temperature, before it begins to melt, which is its inherent nature and the basis for identification and use. And its chemical properties are also unique. When encountering a specific agent, it can make subtle changes, or produce new things, or change its properties, all in accordance with the rules of chemistry and the principles of physical properties.

Technical Specifications & Labeling

8-Aminonaphthalene-2-sulfonic acid, prepared with its own technical specifications and standard identification (commodity parameters). For technical regulations, the choice of raw materials must be pure and suitable, the ratio must be accurate, and the temperature, time and pressure of the reaction must be fixed. Combine the materials in the kettle, the temperature control should be ± 2 ° C, and the duration should be three hours. When finished, analyze, filter, and wash them. For standard identification, look at its color, it should be white or slightly yellow, and the crystal state is uniform; measure its degree, the purity must reach more than 99%; check its impurities, and the amount of impurities should not exceed the limit. 8-Aminonaphthalene-2-sulfonic acid prepared according to this technical regulation and standard identification (commodity parameters) is suitable for use and can be used as the basis for various industries.

Preparation Method

The method of making 8-aminonaphthalene-2-sulfonic acid, the raw materials and process are essential. First take the naphthalene as the original, and then sulfonate it to obtain 2-naphthalene sulfonic acid. Then nitrify it to form 8-nitronaphthalene-2-sulfonic acid. This step requires controlling the conditions to ensure a smooth reaction. Later, by reducing the method, the nitro group is converted to the amino group, and a suitable reducing agent can be selected, such as iron filings and hydrochloric acid. After this step, 8-aminonaphthalene-2-sulfonic acid is obtained. During the process, each reaction step must be carefully operated, and the reaction conditions, such as temperature, time, and the proportion of reactants, must be strictly controlled to promote the complete reaction and improve the purity of the product. And in the production process, we should also consider the selection of equipment and the optimization of the process to achieve the purpose of efficient production.

Chemical Reactions & Modifications

In the field of chemistry, the reaction and modification of Guanfu 8-aminonaphthalene-2-sulfonic acid are the key. In the past, the preparation method may have complicated difficulties, and the reaction rate has not been optimized.
When we study, we carefully observe the mechanism of the reaction. Use suitable reagents to adjust the reaction conditions, hoping to get better results. Try different temperatures, pressures and solvents to observe their effects on the product.
After many tests, we have achieved results. The improved method makes the reaction more convenient and the yield is significantly improved. This chemical change is like clearing the clouds and seeing the sun, making the preparation of 8-aminonaphthalene-2-sulfonic acid a smooth path, paving the way for subsequent applications, which is actually the progress of chemical exploration.

Synonyms & Product Names

8-Aminonaphthalene-2-sulfonic acid, its synonymous name and the name of the commodity, are related to the importance of my chemical research. In the past, there were clouds, chemical substances, many names, and many people with different names. 8-Aminonaphthalene-2-sulfonic acid is no exception. Its synonymous name, or depending on its structural characteristics and reaction characteristics, also has aliases due to research history and regional habits. As for the name of the commodity, merchants recognize its characteristics, facilitate its circulation, or take a unique name. Although both refer to 8-Aminonaphthalene-2-sulfonic acid, they have their own uses in scientific research, commerce, etc. Clarifying its synonymous name and the name of the commodity allows us researchers to avoid confusion and engage in academic exchanges; in the industry, it facilitates trade and promotes industrial development.

Safety & Operational Standards

8-Aminonaphthalene-2-sulfonic acid product safety and operation code
Fu 8-aminonaphthalene-2-sulfonic acid, chemical products are also. It is related to safety and operation standards, and is of paramount importance.
Where this material is involved in the operation, the first priority is the suitability of the environment. It must be done in a well-ventilated place, covering it or having volatilization. If it accumulates in the room, it is easy to cause gas turbidity and harm people. And the place of operation must be kept away from fire and heat sources. Because of its flammability, there is a slight carelessness, and there is a risk of fire.
As for the operator, use protective equipment. Wear special clothes to prevent it from staining the skin; wear protective gloves on your hands to avoid contact with the skin; wear goggles to avoid eye damage. If you accidentally touch it, rinse it with plenty of water immediately. For those who touch the skin, rinse and observe the situation after rinsing, and seek medical attention for those who are serious; for those who enter the eye, you need to urgently seek medical treatment after rinsing.
Furthermore, when storing, you must abide by the norms. It should be placed in a dry and cool place, sealed properly to prevent it from getting damp and deteriorating, and to avoid chemical reactions with other miscellaneous places. When handling, handle it with care, so as not to damage the packaging and cause material leakage.
If this material leaks, do not panic. Small leaks, quickly cover them with inert materials such as sand and vermiculite, collect and deal with them properly. If there are large leaks, evacuate the surrounding people immediately, set up warning signs, report to relevant departments, and coordinate treatment.
In short, the safety and operation specifications of 8-aminonaphthalene-2-sulfonic acid should be carefully followed and followed without violation, so as to ensure that everything goes smoothly and is safe.

Application Area

8-Aminonaphthalene-2-sulfonic acid, this substance has a wide range of uses. In the field of dyes, it can be used as a key intermediate to help synthesize various colorful dyes, and dye fabrics with bright and lasting colors. The field of medicine is also indispensable. With its special structure and properties, or as the basis for the development of new drugs, it has emerged in the prevention and treatment of diseases. In the field of chemical analysis, because of its specific reactivity, it can be used as an analytical reagent to help scientists accurately determine and identify various substances. Furthermore, in the preparation of some fine chemical products, 8-aminonaphthalene-2-sulfonic acid also plays an important role, contributing to the improvement of product performance and quality. In short, it plays a key role in many application fields and promotes the development of related industries.

Research & Development

8-Aminonaphthalene-2-sulfonic acid has been studied by scholars throughout the ages. I have studied this substance for a long time, and I know its properties and uses well.
At the beginning, it was difficult to explore the method of its preparation. However, with unremitting research, I finally obtained a delicate technique. With naphthalene as a base, this acid can be obtained through sulfonation, nitrification, and reduction. Each step needs to be carefully controlled, and temperature, humidity, and dosage are all key.
Its use is also wide. In the dye industry, it can be used as a key intermediate to enhance color and make fabrics bright and lasting. In the field of medicine, it also has potential uses, or can help to form new drugs and heal patients.
We should make unremitting efforts to explore its potential in depth, expand the field of application, and hope to add new achievements to the academic and industrial circles, promoting the development of this material research and application, and benefiting the world.

Toxicity Research

The industry of chemical industry is related to people's livelihood, but the investigation of poisons in it cannot be ignored. Today's research on 8-Aminonaphthalene-2-Sulfonic Acid, the study of its toxicity, is particularly important.
Examine its properties in detail, explore its impact on things. Or enter the water, dye fish and shrimp; or disperse in the soil, hinder the growth of plants. Observe its contact with things, observe its changes, and investigate its harm. Although it is not fully understood, it has already felt that it is a threat to the ecology.
The study of toxicity is not a one-time effort. It must be done in a rigorous manner and repeated experiments to record its feelings in detail. Expect to obtain the true meaning, in order to understand its harm, so that everyone can avoid it, and the industry should take precautions against it, so as not to make it a disaster to the world, so as to live up to the heart of the researcher and ensure the safety of all things.

Future Prospects

8-Aminonaphthalene-2-sulfonic acid, the future prospect of this compound, is really the concern of my generation of chemical researchers. It is already emerging in the field of dye synthesis. Looking at today, many new dyes are based on this, with bright color and good fastness.
Looking to the future, with the advance of science and technology, this compound may bloom in more fields. First, in the field of optoelectronic materials, its unique structure may endow materials with extraordinary optical and electrical properties, opening up a new path for the development of new optoelectronic devices. Second, in the field of biomedicine, it may have the ability to target identification and drug delivery, bringing dawn for disease diagnosis and treatment.
Our chemical researchers, with the heart of exploration, unremitting research, with wisdom and sweat, to tap their potential, so that 8-aminonaphthalene-2-sulfonic acid will shine on the scientific stage of the future, benefiting all people.

Frequently Asked Questions

What is the chemical structure of 8-aminonaphthalene-2-sulfonic acid?

8-Amino-2-naphthol-3-sulfonic acid, its molecular structure is quite unique. This compound is based on a naphthalene ring, which is a fused aromatic hydrocarbon composed of two benzene rings fused together by sharing two adjacent carbon atoms. It has a high degree of stability and conjugation system.
At a specific location in the naphthalene ring, key functional groups are connected. The amino group (-NH2O) is introduced at the 8th position, which is a basic group with lone pair electrons, endowing the compound with certain nucleophilicity and the activity to react with other substances; the hydroxyl group (-OH) exists at the 2nd position, and the hydroxyl group is a highly active functional group, which can participate in a variety of chemical reactions, such as esterification, etherification, etc., and it can interact with other molecules through hydrogen bonds, which has a significant impact on the physical and chemical properties of the compound; the 3 position is connected to the sulfonic acid group (-SOH). The sulfonic acid group is a strong acidic group, which makes the compound have good water solubility and also plays an important role in the charge distribution and chemical reaction activity of the molecule.
These functional groups interact and cooperate with each other on the naphthalene ring, and together determine the unique chemical and physical properties of 8-amino-2-naphthol-3-sulfonic acid, which makes it show important application value in many fields such as dyes and medicine.

What are the physical properties of 8-aminonaphthalene-2-sulfonic acid?

8-Hydroxyquinoline-2-carboxylic acid, is a kind of organic compound. It has several unique physical properties, which are described as follows:
Looking at its properties, it is mostly in solid form under normal conditions, but the specific appearance may vary depending on the purity and crystallization conditions, or it is a white to light yellow crystalline powder with fine texture and a smooth touch.
When it comes to the melting point, it is about 210-220 ° C. At this temperature, the lattice structure of the substance is damaged by heat, and the molecular movement intensifies, gradually melting from solid to liquid. The melting point is stable, which is an important indicator for identification and purity detection.
In terms of solubility, the solubility in water is low. Water is a polar solvent, and the polarity of the compound is limited. According to the principle of "similarity and miscibility", the mutual solubility of the two is not good. However, it is soluble in some organic solvents, such as ethanol and dichloromethane. Ethanol has moderate polarity and hydrogen bonding, and can interact with 8-hydroxyquinoline-2-carboxylic acid molecules to disperse and dissolve; although dichloromethane has weak polarity, it can interact with the compound through van der Waals force to cause it to dissolve.
The density of 8-hydroxyquinoline-2-carboxylic acid is about 1.4-1.5 g/cm ³. The density reflects the mass per unit volume of the substance. This value indicates that it is slightly denser than water. When placed in water, it will sink to the bottom.
Its sublimation is also worth mentioning. Although it is not a sublimative substance, under certain conditions, such as high vacuum and proper heating, some molecules can be directly converted from solid to gaseous. This property may have application value in the field of material purification and analysis.
In addition, the compound has a certain volatility, but the volatility is weak. At room temperature and pressure, a small amount of molecules escape into the air, and the temperature rises, and the volatility or enhancement.

What are the industrial applications of 8-aminonaphthalene-2-sulfonic acid?

8-Hydroxyquinoline-2-carboxylic acid is widely used in industry and has a wide range of applications.
First, it has a significant effect on metal ion chelating agents. Its unique structure allows it to form stable chelates with many metal ions, such as copper, zinc, aluminum, etc. This property is widely used in analytical chemistry and can be used for the separation, enrichment and determination of metal ions. For example, in water quality monitoring, it can accurately separate and measure trace metal ions in water, providing key data for water quality assessment. In the metallurgical industry, it can help extract and separate specific metals from ore leaching liquids, improving the purity and efficiency of metal refining.
Second, in the field of materials science, it also plays an important role. 8-hydroxyquinoline-2-carboxylic acid and its metal chelate are often used as luminescent materials or electroluminescent materials. After rational design and synthesis, materials with specific luminescent properties can be prepared for optoelectronic devices such as organic Light Emitting Diodes (OLEDs). These materials have high luminescent efficiency and adjustable color, which can bring new opportunities for display technology and lighting, and promote the development of related industries.
Third, in the field of catalysis, 8-hydroxyquinoline-2-carboxylic acid can act as a ligand and combine with metal catalysts to regulate the activity and selectivity of catalytic reactions. In organic synthesis reactions, such as oxidation reactions, reduction reactions, etc., by selecting suitable metals and combining the ligand, precise control of the reaction path can be achieved, and the yield and purity of the target product can be improved, which will contribute to the development of organic synthesis chemistry.
Fourth, in terms of corrosion and mildew prevention, 8-hydroxyquinoline-2-carboxylic acid has shown a certain ability. Because of its inhibitory effect on some microorganisms, it can be added to coatings, wood preservatives and other products to prevent materials from being eroded by microorganisms, prolong the service life, and ensure the quality and stability of industrial products.

What are the preparation methods of 8-aminonaphthalene-2-sulfonic acid?

8-Aminoquinoline-2-carboxylic acid is an important organic compound, which is widely used in the fields of medicine and chemical industry. Its preparation methods are various, and the following are common ones:
1. Quinoline is used as the starting material
Quinoline is nitrified and nitro is introduced at a specific position. For example, in the mixed system of concentrated sulfuric acid and concentrated nitric acid, the appropriate temperature and reaction time are controlled to obtain nitroquinoline. Subsequently, the nitro is converted into an amino group by reduction means. Common reducing agents include iron filings and hydrochloric acid, hydrogen and catalysts (such as palladium carbon), etc., to obtain 8-aminoquinoline. 8-Aminoquinoline can be prepared by carboxylation reaction, for example, in the presence of suitable catalysts (such as some transition metal catalysts), with carboxylation reagents such as carbon dioxide. The raw materials for this route are easy to obtain, but there are many reaction steps, and the reaction conditions of each step need to be carefully controlled.
2. Adopt a cyclization reaction strategy
Select suitable nitrogen-containing and carbon-containing organic small molecules, such as specific aniline derivatives and carboxylic acid derivatives with appropriate functional groups. Under appropriate catalysts and reaction conditions, the quinoline ring structure is constructed by intramolecular cyclization reaction. For example, under the catalysis of transition metals, a series of reactions such as cyclization and hydrolysis of anthranilic acid derivatives and carboxylic acid esters containing alkenyl or alkynyl groups are used to form an 8-aminoquine-2-carboxylic acid skeleton. This method has high atomic economy and relatively compact steps, but it requires strict requirements for raw material design and reaction conditions.
3. With the help of biosynthetic methods
, the catalytic properties of microorganisms or enzymes are used to realize the synthesis of 8-aminoquine-2-carboxylic acids. Specific microbial strains are screened or constructed to convert simple carbon sources, nitrogen sources and other substrates into target products by regulating the metabolic pathway of microorganisms. Or specific enzymes, such as some oxidases, transaminases, etc., are used to catalyze the synthesis of 8-aminoquine-2-carboxylic acid from the substrate under mild reaction conditions. Biosynthesis has the advantages of green and mild, but it is difficult to select strains and separate and purify enzymes, and the yield is sometimes difficult to meet large-scale demand.

What are the storage conditions for 8-aminonaphthalene-2-sulfonic acid?

8-Hydroxyquinoline-2-sulfonic acid is an important organic compound, and its storage conditions are crucial, which is related to the stability and quality of the substance.
According to the principles stated in "Tiangong Kaiwu", this compound should be stored in a cool, dry and well-ventilated place. A cool environment can avoid changes in its chemical properties due to high temperature. Due to excessive temperature, or the enhancement of molecular activity, a chemical reaction is triggered, causing it to decompose or deteriorate.
Drying conditions are indispensable. 8-Hydroxyquinoline-2-sulfonic acid has a certain hydrophilicity, and it is easy to absorb moisture in a humid environment. After moisture absorption, it may dissolve or agglomerate, which affects its purity and performance. And moisture exists or catalyzes some side reactions, which damages its structure and function.
Good ventilation is also critical. It can disperse harmful gases that may be volatilized in time to prevent danger caused by excessive local concentration. At the same time, good ventilation can maintain fresh air in the storage environment and avoid abnormal temperature and humidity caused by lack of air circulation.
In addition, the container for storing this compound should also be carefully selected. Corrosion-resistant materials, such as glass or specific plastic containers, should be used. Because 8-hydroxyquinoline-2-sulfonic acid contains acidic groups, it may react with ordinary metal containers, causing corrosion of the container and affecting the quality of the compound.
When storing, it should be stored separately from oxidants and bases to avoid chemical reactions caused by mixed storage. The corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment should also be prepared to prevent accidents. In this way, Fangbao 8-hydroxyquinoline-2-sulfonic acid is stable during storage for subsequent use.