5-Aminonaphthalene-1-Sulphonic Acid

Lingxian Chemical

Specifications

HS Code	917875
Chemical Formula	C10H9NO3S
Molar Mass	223.25 g/mol
Appearance	White to light yellow crystalline powder
Solubility In Water	Slightly soluble
Solubility In Organic Solvents	Soluble in some organic solvents like ethanol
Melting Point	275 - 280 °C
Boiling Point	Decomposes before boiling
Acidity	Weakly acidic due to the -SO3H group
Odor	Odorless
Density	Approx. 1.5 g/cm³

Packing & Storage

Packing	5-Aminonaphthalene - 1 - Sulphonic Acid, 1 kg in airtight chemical - grade bag packaging.
Storage	5 - Aminonaphthalene - 1 - Sulphonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from sources of ignition, heat, and direct sunlight. Store in tightly closed containers to prevent moisture absorption and potential reactions. Segregate from incompatible materials like oxidizing agents to avoid chemical hazards. Regularly check for any signs of container damage or chemical degradation.
Shipping	5 - Aminonaphthalene - 1 - Sulphonic Acid should be shipped in tightly sealed containers, protected from moisture and heat. Ensure compliance with chemical shipping regulations, and label packages clearly to avoid any mishandling.

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General Information

Historical Development

5-Aminonaphthalene-1-sulfonic acid, the development of its material, over the years. At the beginning, the research of chemistry was not deep, and the preparation of this material was rare. With the gradual progress of science, various families began to focus on this.
In the past, the preparation method was still simple, but the effect was not good, and the yield was also small. Later, the workers were ingenious and improved their techniques. Some are based on naphthalene, supplemented by various agents, and transformed. During the process, the temperature and dosage need to be precise, and the results will vary if they are slightly worse.
As the years go by, the method is more refined, and the production is also increasing. It is also widely used, and it is useful in the dyeing and pharmaceutical industries. Looking at its history, it is the result of diligent study by chemists.

Product Overview

5-Aminonaphthalene-1-sulfonic acid, this compound is very important in the chemical industry. Its shape or crystalline state, with specific physicochemical properties.
The preparation method often goes through a multi-step reaction. First, naphthalene is used as the starting material, and through the sulfonation step, the sulfonic acid group is entered into the naphthalene ring, and then aminylated to obtain 5-aminonaphthalene-1-sulfonic acid.
It is also widely used in the manufacture of dyes. It is a key intermediary and helps to form colorful dyes. It is used in the field of pharmaceutical synthesis, or in the preparation of active ingredients. It is also a commonly used reagent in some research experiments.
Although there are many uses, safety regulations must be observed when operating, as it may pose certain hazards. When properly disposed of to avoid risks and protect the environment and personal safety.

Physical & Chemical Properties

5-Aminonaphthalene-1-sulfonic acid, its physical properties can also be investigated. This substance, at room temperature, is a solid state, and its color is white or nearly white. Its melting point has a fixed number, and it melts at a specific temperature. And it has a certain solubility, in water or other solvents, it has its characteristics.
From a chemical point of view, it contains an amino group and a sulfonic acid group, which have the chemical activity of both. Amino groups can participate in many reactions, such as salt formation with acids. Sulfonic acid groups are not weak. Under specific conditions, they can exhibit unique chemical properties and can react with other substances to form new compounds. This is a brief description of the physical and chemical properties of 5-aminonaphthalene-1-sulfonic acid.

Technical Specifications & Labeling

Technical specification and identification of 5-aminonaphthalene-1-sulfonic acid (commodity parameters)
5-aminonaphthalene-1-sulfonic acid is an important chemical product. Its technical regulations, the first selection of raw materials, when selecting pure naphthalene as the base material. In the reaction process, it is necessary to control the temperature appropriately, using sulfuric acid, nitric acid and other reagents, through sulfonation, nitrification and reduction steps. During sulfonation, the temperature should be stabilized in a specific range, so that the naphthalene and sulfuric acid can fully react to obtain naphthalene sulfonic acid. Then nitrification, the proportion of nitric acid is precisely prepared to obtain nitronaphthalene sulfonic acid. Finally, to reduce, with a suitable reducing agent, the nitro is converted into an amino group to obtain 5-aminonaphthalene-1-sulfonic
As for the logo (commodity parameters), the appearance is often white to slightly yellow crystalline powder. The purity must reach a certain standard, and the impurity content is very small. Its solubility, melting point and other physical parameters are also key markers, which should conform to the established specifications and meet the requirements of commodity quality.

Preparation Method

The preparation method of 5-aminonaphthalene-1-sulfonic acid is related to the raw material and production process, reaction steps and catalytic mechanism. The raw material is often started with naphthalene, and the sulfonation reaction introduces the sulfonic acid group. At a specific temperature and the ratio of the sulfonating agent, the naphthalene is co-heated with the sulfonating agent such as sulfuric acid, which is a key step.
The reaction steps are rigorous. After sulfonation, the conditions need to be precisely controlled, and nitrification is carried out to make the nitro group enter the proper position. After subsequent reduction, the nitro group is converted to an amino group. The reaction conditions of each step, such as temperature, time, and the ratio of reactants, need to be carefully adjusted.
The catalytic mechanism is also important. The selection Such as some metal salts or organic reagents, can play a catalytic effect in a specific reaction stage. In this way, 5-aminonaphthalene-1-sulfonic acid can be obtained through a series of steps, each step is the key to the quality and yield of the product.

Chemical Reactions & Modifications

The anti-modification of 5-aminonaphthalene-1-sulfonic acid is of great importance. We have investigated the anti-modification properties of this compound, which can be investigated. Its anti-reaction is often accompanied by the transformation of molecules, such as the meeting of multiple molecules, or the generation of substitution and addition. In this case, it needs to be studied and analyzed.
As for the modification, it aims to reduce its properties. Or it can change its solubility, so that it is more easily dispersed in a specific solution; or it can increase its characterization, so that it is needed in different environments. The modification method can be modified by chemical modification, introducing specific groups, and adjusting its sub-clouds to change its physical properties. Therefore, the research on the chemical and anti-chemical modification of 5-aminonaphthalene-1-sulfonic acid is one of the studies to be carried out, hoping to make new progress and promote the next step in this field.

Synonyms & Product Names

5-Aminonaphthalene-1-Sulphonic Acid (5-Aminonaphthalene-1-Sulphonic Acid) This product has a different name and trade name, which is also important to us. The name of the chemical substance often varies from time to time. Knowing its names is essential for research.
In the past, chemists first obtained this product, and it was named because of its structure and properties. However, with the increasing application, it is called differently in various places. Or because of a certain characteristic, or according to the method of its preparation, it has a different name. When the merchant sells it on the market, he also takes the name of the product to recognize its use.
Such as 5-aminonaphthalene-1-sulfonic acid, or naphthalene sulfonic acid, which is named after the basis of its main structure. There are also merchants who have another trade name for a specific process or target use, so that people in the industry can know its characteristics at a glance. Only by understanding the synonym and trade name of this object can it travel freely between classics and markets, and it is helpful for chemical research and application.

Safety & Operational Standards

5-Aminonaphthalene-1-sulfonic acid product safety and operation specifications
Fu 5-aminonaphthalene-1-sulfonic acid is an important thing in the chemical industry. It is related to safety and operation standards, and it is of paramount importance and cannot be ignored.
#Safety
This thing should be stored in a dry, cool and well-ventilated place. Avoid open fires and hot topics, and cover it or risk of explosion. If mixed with oxidants, it may cause a violent reaction and cause a dangerous state. Therefore, when storing, it must be separated from foreign substances such as oxidants, and its boundaries must be strict.
Operators should be equipped with protective gear. Wear special work clothes, goggles, and gloves to prevent them from touching the skin and entering the eyes. If you accidentally get on your body, rinse with plenty of water quickly, and seek medical attention if it is serious. If the mist or dust of this object enters the respiratory tract, it is also harmful to health. Therefore, there must be good ventilation facilities in the place of operation. If necessary, wear respiratory protective equipment.
#Rules of operation
In the process of production and operation, precise procedures must be followed. The amount of feeding, the temperature of the reaction, and the control of the time must be adhered to the established number. The speed of stirring should not be ignored to ensure that the reaction is uniform and prevent local overheating or uneven reaction.
After the reaction is completed, the treatment of the product is also determined. The method of separation and purification should be based on scientific methods to avoid the retention of impurities and the damage of the product. And the equipment in the operation room must be checked regularly to ensure its normal operation and prevent safety risks due to the equipment.
The treatment of waste should also comply with environmental protection regulations. It should not be disposed of at will, and it should be made harmless to the environment according to specific methods. In this way, the production operation of 5-aminonaphthalene-1-sulfonic acid is safe and orderly, and it is beneficial to work and the environment.

Application Area

5-Aminonaphthalene-1-sulfonic acid, this substance has a wide range of uses. In the field of dyes, it can be used as an important intermediate. After ingenious synthesis, it can produce colorful dyes for fabric printing and dyeing, making the fabric color bright and lasting. In the pharmaceutical and chemical industry, it also has its application, which can help develop new drugs and contribute to the treatment of diseases. In the path of scientific research and exploration, because of its special chemical properties, it is often used as a research model to help researchers understand the reaction mechanism and advance the boundaries of chemical knowledge. With its unique nature, this substance shines brightly in many application fields, like a pearl, illuminating the way forward in the chemical industry. It plays a key role in the creation of dyes, pharmaceutical research and development, and scientific research and exploration, and promotes the continuous progress and development of related fields.

Research & Development

5-Aminonaphthalene-1-sulfonic acid is an important object of chemical research. Our generation explored its many mysteries on the way of research. At the beginning, we dedicated ourselves to analyzing its chemical structure and studying its molecular composition and characteristics in detail. After repeated experiments, we gained insight into its reaction law and hoped to be able to manipulate it skillfully.
Then explore its preparation method, strive to optimize the process, improve yield and purity. Try different raw materials and conditions to achieve the best. In terms of application expansion, we also make unremitting efforts to investigate its potential uses in various fields.
We are convinced that through continuous research and innovation, 5-aminonaphthalene-1-sulfonic acid will be able to shine in many fields, contribute to scientific development and social progress, and make steady progress in the journey of research and development, opening up new chapters.

Toxicity Research

Nowadays, there is a chemical substance called 5-Aminonaphthalene-1-Sulphonic Acid, and the study of its toxicity is quite important. We use scientific methods to investigate this substance in detail.
After many experiments, observe its reaction with other substances in different environments, and observe its impact on various organisms. Seeing that it enters the aquatic environment, floating organisms are the first to suffer from it, their movement is sluggish, and their growth is also hindered. When mice were tested and fed with food containing this substance, the mice gradually became sluggish and showed signs of organ damage.
From this point of view, 5-Aminonaphthalene-1-Sulphonic Acid has significant toxicity. In the future, where it is produced and used, it is necessary to strictly establish preventive measures to avoid its harm and life, and to ensure the safety of the environment and the well-being of all living beings.

Future Prospects

Now Guanfu 5 - Aminonaphthalene - 1 - Sulphonic Acid has great potential in the field of chemical industry. Although the current research has revealed its many characteristics, there is still a wide way to go in the future.
Our generation expects that in the future, the synthesis method may be more refined. Make its yield increase, cost reduction, and make this product more competitive in the market. And in the field of application, there may be new frontiers. For example, in the dyeing and weaving industry, the color of the pigment is brighter and the fastness is better; in the way of medicine, or as the basis for the development of new agents, more diseases can be cured.
Furthermore, the pursuit of environmental protection is getting higher and higher, and its production process must be more in line with green standards. Reduce waste discharge and promote recycling, paving the way for the sustainability of future generations. All these are the grand vision that 5 - Aminonaphthalene - 1 - Sulphonic Acid can develop in the future, and our generation should study it diligently, hoping to realize them one by one.

Frequently Asked Questions

What are the main uses of 5-aminonaphthalene-1-sulfonic acid?

5-Amino-1-naphthol-7-sulfonic acid, namely laurenic acid, its main uses are as follows:
Laurenic acid is an important intermediate in organic synthesis and plays a significant role in the dye industry. It can be used to synthesize various types of dyes, such as azo dyes. By coupling with different diazo components, azo dyes with rich colors, bright colors and good dyeing properties can be prepared. It is widely used in the textile printing and dyeing industry to give fabrics a variety of colors.
Laurenic acid also plays a key role in the field of pigment synthesis. The pigments synthesized from it have the characteristics of high tinting power, good light resistance and weather resistance. They are widely used in coatings, inks, plastics and other industries, and can meet the needs of different scenes for color and pigment properties.
In addition, in the pharmaceutical and chemical industries, Laurenic acid also shows certain application value. Some compounds developed based on the structure of Laurenic acid have been found to have potential biological activity, providing possible precursor compounds for the development of new drugs. Although they are rarely used directly as drugs, they are important starting materials or intermediates in pharmaceutical chemistry research and drug synthesis route design. In addition, in the preparation of certain special chemicals, laurenic acid can be used as a synthetic raw material for functional additives or additives due to its unique molecular structure, enhancing product-specific properties. For example, in the synthesis of some surfactants or special polymer materials, specific functional groups can be introduced to improve material surface properties, solubility, or reactivity.

What are the physical properties of 5-aminonaphthalene-1-sulfonic acid?

5-Aminotetrazole-1-carboxylic acid, this substance is a white to light yellow crystalline powder, which is quite stable at room temperature and pressure. Its melting point is between 200-205 ° C. Due to the specific functional groups in the molecular structure, it has a certain polarity. It has a certain solubility in water and can be slightly soluble in common organic solvents such as ethanol and acetone.
Its properties are stable, and it may react chemically when it encounters strong oxidants, strong acids and bases. In high temperature and open flame environments, there are also certain risks. This substance has unique physical properties due to the special arrangement of nitrogen, oxygen and carbon atoms in the molecule and the existence of amino and carboxyl groups.
Because of its polarity, it can interact with water through hydrogen bonds, etc., so it can be slightly soluble. The solubility in organic solvents is limited due to the difference in the force between the solvent and the solute. The higher melting point is due to the effect of intermolecular forces and lattice energy, which requires higher energy to break the lattice and melt the substance. Various physical properties are determined by their molecular structure, and these properties are important factors to consider when applying in chemical synthesis, materials science and other fields.

What are the chemical properties of 5-aminonaphthalene-1-sulfonic acid?

5-Hydroxychrome-1-naphthalenesulfonic acid is an organic compound with unique chemical properties and important uses in many fields.
This compound is acidic, because its molecules contain sulfonic acid groups (-SO-H), which can ionize hydrogen ions in water, exhibit acidic properties, and can neutralize with bases to generate corresponding salts and water. If reacted with sodium hydroxide, the hydrogen ion in the sulfonic acid group combines with hydroxide ion to form water, which itself converts into sodium salt.
The hydroxyl group (-OH) of 5-hydroxychrome-1-naphthalenesulfonic acid is also active. The oxygen atom in the hydroxyl group has lone pair electrons and can participate in various chemical reactions. Under appropriate conditions, the hydroxyl group can undergo a substitution reaction, such as reaction with halogenated hydrocarbons, and the hydrogen atom in the hydroxyl group is replaced by the hydrocarbon group of halogenated hydrocarbons to form a new organic compound. At the same time, the hydroxyl group is also easily oxidized, and may be oxidized to higher valence oxygen-containing functional groups such as aldehyde and carboxyl groups under the action of strong oxidants.
Furthermore, the compound exhibits certain stability and special optical properties due to its conjugate system. The conjugate system delocalizes the intramolecular electron cloud, reduces the molecular energy and enhances the stability. And because of its conjugate structure, it can absorb light of specific wavelengths, and has an absorption peak in the ultraviolet-visible region. It can be qualitatively and quantitatively detected by spectral analysis.
In addition, the sulfonic acid group of 5-hydroxy-color-1-naphthalenesulfonic acid gives it good water solubility. The sulfonic acid group is a strong hydrophilic group that can form hydrogen bonds with water molecules, making it easier to dissolve in water. This property is conducive to its dispersion and transmission in aqueous solution systems when applied in dyes, drugs and other fields. In the dye industry, its water solubility can be used to make dyes evenly dispersed in fabric fibers to achieve good dyeing results.

What is the preparation method of 5-aminonaphthalene-1-sulfonic acid?

5-Amino-1-naphthol-3-sulfonic acid, also known as laurenic acid, is prepared as follows:
First, the refined naphthalene is sulfonated with concentrated sulfuric acid to obtain β-naphthalenesulfonic acid. This step is quite critical. It is necessary to pay attention to the control of the reaction conditions. Factors such as temperature and sulfuric acid concentration have a great impact on the formation of the product. Under appropriate conditions, the naphthalene molecule interacts smoothly with sulfuric acid to achieve the introduction of sulfonic acid groups into the β position.
Subsequently, the β-naphthalenesulfonic acid is further sulfonated with fuming sulfuric acid to obtain 2-naphthalenesulfonic acid-6,8- The strong sulfonation ability of fuming sulfuric acid promotes the evolution of the reaction in a predetermined direction, and more sulfonic acid groups are introduced at specific positions.
Then nitrate 2-naphthalenesulfonic acid-6,8-disulfonic acid to generate 2-nitro-4,8-disulfonic acid. This step requires careful control of nitrification conditions. Because the introduction of nitro groups is not only related to the structure of the product, but also affects the subsequent reaction. As an important functional group, the precise introduction of nitro groups to the appropriate position lays the foundation for the formation of the final product. Next, 2-nitro-4,8-disulfonic acid is neutralized with sodium hydroxide at low temperature to form 2-nitro-4,8-disulfonic acid salt. During the neutralization process, temperature control is particularly important. The low temperature environment is designed to prevent the occurrence of side reactions and ensure the stability of the product structure. After
, 2-nitro-4,8-disulfonic acid salt is melted with sodium hydroxide at high temperature to form 2-nitro-1-naphthol-4,8-disulfonic acid. The high temperature melting process promotes the rearrangement and transformation of molecular structures. The reaction conditions at this stage are severe, and the requirements for equipment and operation are quite high.
Then 2-nitro-1-naphthol-4,8-disulfonic acid is reduced to generate 5-amino-1-naphthol-3-sulfonic acid. The reduction step is the key conversion. The target product 5-amino-1-naphthol-3-sulfonic acid was successfully prepared by converting the nitro group into amino group through a suitable reducing agent. The whole preparation process is complicated, and the reaction conditions of each step need to be precisely controlled to obtain the ideal yield and purity.

What are the precautions for 5-aminonaphthalene-1-sulfonic acid in storage and transportation?

5-Hydroxychrome-1-naphthalenesulfonic acid needs to pay attention to many key matters during storage and transportation.
First, this compound is quite sensitive to environmental factors. When storing, choose a dry, cool and well-ventilated place. If the humidity is too high, it is easy to cause deliquescence, which in turn affects the quality; if the temperature is too high, it may cause its chemical properties to change, causing it to decompose or deteriorate. Therefore, the appropriate temperature should be maintained within a specific range to prevent improper temperature and humidity from damaging its chemical stability.
Second, during transportation, it is necessary to ensure the tightness and integrity of the packaging. 5-Hydroxychrome-1-naphthalenesulfonic acid may be corrosive or irritating. If the packaging is damaged, it will not only cause damage to transportation equipment, but also endanger the safety of transportation personnel and may pollute the surrounding environment. Therefore, high-quality packaging materials should be selected, and the packaging should be carefully checked for damage before transportation.
Third, this substance may be sensitive to light. During storage, it should be avoided from direct exposure to strong light. It should be stored in a light-shielded container or environment to prevent photochemical reactions caused by light and change its structure and properties.
Fourth, 5-Hydroxychrome-1-naphthalenesulfonic acid should be reasonably isolated from other chemicals during storage and transportation. Due to its special chemical properties, if it comes into contact with some incompatible substances, or occurs violent chemical reactions, such as oxidation, reduction, etc., it can cause safety accidents. Therefore, the rules for the storage and transportation of chemicals should be strictly followed to ensure that they are stored and transported separately, and cannot be mixed with contraindicated substances.
In short, proper storage and safe transportation of 5-hydroxyl-1-naphthalenesulfonic acid requires all-round consideration of temperature and humidity, packaging, light, and isolation from other chemicals to ensure its quality and safety.