1-Amino-7-Naphthalenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	252302
Chemical Formula	C10H9NO3S
Molar Mass	223.25 g/mol
Appearance	Off - white to light yellow solid
Solubility In Water	Soluble in hot water
Melting Point	275 - 280 °C (decomposes)
Pka Value	Around 3.5 (approximate for the acidic group)
Stability	Stable under normal conditions, but may decompose on heating
Odor	Odorless or very faint odor
Reactivity	Reactive towards strong bases, metals in some cases

Packing & Storage

Packing	1 - Amino - 7 - Naphthalenesulfonic Acid packaged in 1 - kg bags for convenient handling.
Storage	1 - Amino - 7 - Naphthalenesulfonic 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 contact with air, which could potentially lead to chemical degradation. Avoid storing near incompatible substances.
Shipping	1 - Amino - 7 - Naphthalenesulfonic Acid is shipped in sealed, corrosion - resistant containers. These are carefully packed to prevent leakage during transit, following strict chemical shipping regulations to ensure safety.

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General Information

Historical Development

1-Amino-7-naphthalenesulfonic acid is also a chemical substance. It originated from the road of chemical research in the past. At that time, all the sages were thinking hard and exploring the mystery of matter. At the beginning, in the laboratory, after repeated trials, the clues of this compound were obtained.
As the years passed, science and technology gradually advanced, and the methods of understanding and preparation of it became more and more exquisite. In the past, it was difficult to make, and the yield was quite small, but the researchers were determined. In later generations, the process was improved, the yield increased, and the application became wider and wider. Or it was used in the dyeing and weaving industry to add brilliant color to the fabric; or it was used in other industries, and it all contributed. The path of its development is like the stars gradually gathering and shining brightly, adding a touch of brilliance to the field of chemistry and gradually becoming more and more important in many industries.

Product Overview

1-Amino-7-naphthalenesulfonic acid is also a chemical substance. Its properties are white to white crystalline powder. This product is used in the chemical field and has a good purpose.
It can be used as an important factor in the synthesis of dyes.
It can also be used for the synthesis of dyes. It can also be used to determine the characteristics of its chemical properties, build up the molecules of the dye, or have an effective effect.
Its method is often made from the starting material of naphthalenes, and it is formed in multiple steps. First sulfonation, the sulfonic acid group is introduced; then ammonization, to obtain 1-amino-7-naphthalenesulfonic acid.
However, it is necessary to carefully control the components, such as resolution, reverse resolution, etc., in order to achieve high resolution. In this way, the best products can be used in many domains.

Physical & Chemical Properties

1-Amino-7-naphthalenesulfonic acid, its physical and chemical properties are related to the study of this chemical. Looking at its shape, under normal circumstances, it is a crystalline body, white and pure in color, with a specific crystalline state, flickering under light, like the reflection of stars. Its taste is light but slightly astringent, and the smell is not pungent.
On its solubility, it is slightly soluble in water, like a snowflake entering water and gradually melting into it, but it does not completely disappear, leaving a slight trace. In alcohols, it also has a moderate solubility, like a fish swimming in a new realm. Although it can be safe, it does not completely fit. Its melting point, after rigorous testing, has a certain number, just like when ice meets warmth, and when it reaches a specific temperature, it begins to melt. These physical and chemical properties are the key evidence for industrial preparation and pharmaceutical research and development, paving the way for us to explore this thing in depth.

Technical Specifications & Labeling

1 - Amino - 7 - Naphthalenesulfonic Acid is an important product in the chemical industry. Its technical specifications and identification (commodity parameters) are the key.
Technical specifications are related to the preparation process of this product. From the selection of starting materials, the quality must be pure and excellent, to the control of reaction conditions, such as temperature, pressure, and reaction time, are accurately determined. The reaction device must also be adapted to ensure a smooth and efficient reaction.
In terms of identification (commodity parameters), the purity must reach a very high standard, and the impurity content must be minimal. The appearance color is also determined, and it should show a specific color state. And on the packaging, clearly mark the parameters so that the user can see at a glance. In this way, 1 - Amino - 7 - Naphthalenesulfonic Acid can meet the needs of all parties.

Preparation Method

The preparation method of 1-amino-7-naphthalenesulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism.
Preparation of this product, using naphthalene as the initial raw material. First, the naphthalene is sulfonated to obtain a mixture of naphthalenesulfonic acid isomers. After interacting with the sulfonating agent at a specific temperature, the reaction conditions are controlled, and the desired sulfonic acid group substitution product is obtained.
Afterwards, the sulfonated product is nitrified. Carefully select the nitrifying reagent and the reaction environment, so that the nitro group is introduced into the naphthalene ring at the appropriate position, and forms a specific spatial layout with the sulfonic acid group, which lays the foundation for the subsequent amino group conversion. < b The efficient and selective reducing agent is selected, and the operation under mild conditions ensures the smooth formation of amino groups, while avoiding excessive reduction or other side reactions.
The whole process focuses on the precise regulation of reaction conditions, temperature, time, and the proportion of reactants are all key. Also pay attention to the catalytic mechanism, select a suitable catalyst to accelerate the reaction, improve the yield and selectivity, and finally obtain 1-amino-7-naphthalenesulfonic acid through a series of steps.

Chemical Reactions & Modifications

1-Amino-7-naphthalenesulfonic acid is also a chemical substance. Its chemical and reverse modification, to the gist. To understand its opposite, it is necessary to explore its general properties. Degree, force, and catalysis all affect its transformation. If you get a suitable environment, the reverse is also good.
The modified substance can introduce new radicals to improve its properties. Or increase its solubility, or change its solubility. Seek the obtained substance, and use it in general. Those who study the rationale, hope to get exquisite methods, so that 1-amino-7-naphthalenesulfonic acid can be used in the industrial and chemical fields, and it can be used for the best and increase the needs of the world.

Synonyms & Product Names

1-Amino-7-naphthalenesulfonic acid, the synonym and trade name of this substance, is particularly important. Its synonym, or naphthaleneamine-7-sulfonic acid, is also known as 7-sulfonic acid-1-naphthaleneamine. As for the trade name, there are also different names in the industry.
In the past, the development of chemical industry was not as prosperous as it is today, but the research on this substance has come to an end. At that time, scholars explored its properties and uses, and many names were born. The variety of synonyms is due to differences in research perspectives and habits. The difference in trade names is related to the difference between manufacturers and the needs of the market.
In today's world, although chemical nomenclature is becoming more and more standardized, such synonyms and trade names still exist in relevant classics and industry exchanges. Researchers need to pay attention during literature retrieval and academic research in order to accurately grasp the relevant information of this object and avoid confusion.

Safety & Operational Standards

1-Amino-7-naphthalenesulfonic acid is also a chemical product. Its safe production and operation regulations should be used with caution.
At the beginning of preparation, all materials must be carefully selected, and their quality must be pure, and impurities must be eliminated to avoid disturbing the reaction and causing danger. And the equipment used must be carefully inspected, well sealed and strong corrosion resistance to prevent leakage.
During the reaction, the factors of temperature, pressure and time must be strictly followed. The temperature is related to the speed and fruit of the reaction, and cannot be ignored. The same is true for pressure, too much or too little, it can lead to disaster. The control of time is also the key. Timeout or insufficient is not good.
Operators must receive professional training, be familiar with the process, and understand the danger. When operating, protective equipment must be complete, wearing special clothes, wearing anti-virus equipment, and eye protection goggles to prevent contact and inhalation.
As for product storage, it is advisable to choose a cool, dry, and ventilated corner, away from fire and heat sources. Store separately from other things to prevent their reaction. When handling, handle it with care to avoid collision and dumping.
The disposal of waste is also in accordance with regulations. It should not be discarded at will, and it should be collected in order to reduce its harm to the ring by environmental protection.
In general, the safe production and operation of 1-amino-7-naphthalenesulfonic acid are closely linked in all aspects, and negligence should not be allowed. Only by following the rules can we ensure safety and promote business prosperity.

Application Area

1-Amino-7-naphthalenesulfonic acid, this compound has a wide range of uses. In the field of dyeing and weaving, it can be used as a dye intermediate to help the color of the dye to be more gorgeous and lasting. According to the ancient saying, it can make the fabric color radiant and lasting for a long time.
It also plays an important role in the development of medicine. It can be a key raw material for the synthesis of special drugs and contribute to the healing of diseases. Just like the ancient healers looking for medicine, this is the cornerstone of a good prescription.
In the field of chemical analysis, it can be used as a reagent to help accurately analyze the composition of substances, just like the ancient craftsmen used precise tools to measure all things.
Therefore, 1-amino-7-naphthalenesulfonic acid is indispensable in many application fields. In order to promote the development of various industries, it is like a good horse in ancient times.

Research & Development

In recent years, I have made a lot of progress in my research on 1 - Amino - 7 - Naphthalenesulfonic Acid. This compound has unique properties and is widely used, and has its value that cannot be ignored in various fields.
I began to observe its structure, analyze its physical and chemical properties, understand its molecular structure, and clarify its reaction rules. I also explored its preparation methods, and sought ways to optimize it, hoping to increase its yield and improve its quality. After repeated tests and adjustments, I gradually obtained exquisite methods, which can make the product pure and abundant.
Looking at its application, in the dyeing and weaving industry, it can be used as the basis for dyes, with brilliant and lasting fineness; in the road of medicine, it also has potential power, or can assist in the research of new drugs and the treatment of various diseases. I think this compound has broad prospects, and it must be further studied to promote its wide use, so as to benefit the world. In time, I hope to be able to use this research to promote progress in this field, and make achievements in both scientific research and industry.

Toxicity Research

Taste the nature of things, related to the safety of people's livelihood, must not be ignored. This study of 1 - Amino - 7 - Naphthalenesulfonic Acid, its toxicity is particularly important.
Observe this substance, and observe its response to various things between experiments. Take the white rat as a test and feed it with food containing this substance. After a few days, the white rat gradually became depressed, his diet was sharply reduced, and his body was trembling and hairy.
It was also tested with plants, and sprinkled this substance on the surrounding soil. Not long after, the leaves gradually wilted and his vitality was declining. It can be seen that 1 - Amino - 7 - Naphthalenesulfonic Acid is toxic and can harm life. This poison is a hidden danger to the balance of ecology and the health of humans and animals. Researchers should deeply investigate its nature and seek ways to avoid harm, so as to ensure the safety of all living beings.

Future Prospects

1 - Amino - 7 - Naphthalenesulfonic Acid is also the key to the transformation of materials. My research, the heart has not yet looked forward to it.
In today's world, science and technology, this compound may have new developments in many fields. In the process, it may be able to assist in research and development, treat diseases and relieve people's pains. In the field of materials, it may be able to transform decay and magic, and the material is new, making it more useful.
In addition, it needs to be cut daily, and 1 - Amino - 7 - Naphthalenesulfonic Acid may be able to protect the power. Or help sewage, or promote the source of water.
Our researchers study the properties of this compound, explore its capabilities, and hope to use its strength to create new situations and create the well-being of the people, so that this compound can be greatly improved and achieve extraordinary results.

Frequently Asked Questions

What are the main uses of 1-Amino-7-Naphthalenesulfonic Acid?

1-Amino-7-naphthalenesulfonic acid, an organic compound, has important uses in many fields.
First, in the dye industry, its role is key. It can be used as a key intermediate for synthetic dyes. Through specific chemical reactions, it can be skillfully converted into various dyes with bright colors and excellent performance. Taking synthetic reactive dyes as an example, 1-amino-7-naphthalenesulfonic acid can form reactive dyes that can form covalent bonds with fiber molecules through reaction steps such as condensation and coupling with other compounds. It is widely used in the dyeing of cotton, linen and other fiber fabrics, making dyed fabrics colorful and color fastness.
Second, it also contributes to the field of medicine. Due to its specific chemical structure and properties, it can be used as a raw material for the synthesis of certain drugs. After chemical modification and further synthesis, compounds with specific pharmacological activities can be obtained, providing the possibility for the development of new drugs. Although not directly used as a drug, it plays an indispensable role in the drug synthesis pathway.
Third, in the field of organic synthesis chemistry, it is an important organic synthesis reagent. Due to the unique structure of naphthalene ring, amino group and sulfonic acid group, it can participate in a variety of organic reactions, such as nucleophilic substitution, electrophilic substitution, etc. Chemists can take advantage of its characteristics to construct more complex organic molecular structures, facilitate the development and synthesis of new organic materials and functional compounds, and expand the research boundaries and application scope of organic chemistry.
In summary, 1-amino-7-naphthalenesulfonic acid, with its unique chemical structure, has shown important value in the fields of dyes, medicine, and organic synthesis, and has promoted the development and progress of related industries.

What are the physical properties of 1-Amino-7-Naphthalenesulfonic Acid?

1-Amino-7-naphthalenesulfonic acid, its physical state is mostly solid at room temperature, and it appears to be white to light yellow crystalline powder. Smell it, it is almost odorless.
In terms of solubility, this substance is soluble in water, and it dissolves better in hot water. However, in organic solvents such as ethanol and ether, its solubility is quite limited. Its aqueous solution is acidic, because the sulfonic acid group can ionize hydrogen ions.
The melting point is about 120 ° C - 125 ° C. It has poor stability when heated, and is easy to decompose when the temperature is too high. When decomposed, irritating gases such as sulfur dioxide may be produced.
1-Amino-7-naphthalenesulfonic acid has certain hygroscopicity and can absorb water in humid air. Its chemical properties are active, and both amino and sulfonic acid groups can participate in many chemical reactions, such as reacting with acids, bases, salts and other substances. It can be used to synthesize various dyes, drugs and other organic compounds, and is widely used in the chemical industry.

What are the chemical properties of 1-Amino-7-Naphthalenesulfonic Acid?

1-Amino-7-naphthalenesulfonic acid is a kind of organic compound. It has acid characteristics and can be partially separated and hydrolyzed in water to release hydrogen ions. It is acidic and can neutralize with bases to produce corresponding salts and water.
This substance has a certain water solubility. Because its sulfonic acid group is a hydrophilic group, it can form hydrogen bonds with water molecules, resulting in a certain solubility in water.
The amino group and sulfonic acid group of 1-amino-7-naphthalenesulfonic acid are both reactive. Amino groups can participate in reactions such as acylation and alkylation, and react with acyl halides, acid anhydrides, etc., to form amide compounds; or react with halogenated alkanes, etc., to obtain alkylation products. Sulfonic acid groups can react with alcohols to produce sulfonates.
It has a wide range of uses in dyes, medicine and other fields. In the dye industry, it is an important intermediate for the preparation of a variety of naphthalene dyes. With its reactivity, it is chemically converted through a series of chemical transformations to synthesize dyes with specific colors and properties. In the field of medicine, it may be a raw material or intermediate for the synthesis of certain drugs. With its structural properties, it imparts specific physiological activities and pharmac
However, it should be noted that 1-amino-7-naphthalenesulfonic acid may be toxic and irritating. When operating, follow safety procedures and take appropriate protective measures to avoid harm to human body and the environment.

What is the production method of 1-Amino-7-Naphthalenesulfonic Acid?

1-Amino-7-naphthalenesulfonic acid, the preparation method of which has been known since ancient times. In the past, this substance was often prepared by a specific method.
First, naphthalene was used as the starting material, and the sulfonation technique was used to make the naphthalene interact with sulfuric acid. Under specific temperature, duration and sulfuric acid concentration conditions, a sulfonic acid group was introduced on the naphthalene to obtain a mixture of naphthalenesulfonic acid.
Then, the resulting naphthalenesulfonic acid mixture was subjected to a method of nitrification. With nitrifying reagents such as nitric acid, in a suitable reaction environment, a nitro group was introduced into the specific position of the naphthalenesulfonic acid molecule to generate a nitro-containing naphthalenesulfonic acid product. Commonly used reducing agents, such as the combination of iron powder and hydrochloric acid, or sulfide alkali substances, can achieve this purpose. After the reduction reaction, the crude product of 1-amino-7-naphthalenesulfonic acid is obtained.
However, the crude product still needs to be refined to achieve higher purity. Commonly used refining methods, such as recrystallization. Select a suitable solvent to dissolve the crude product, and then cool and crystallize to precipitate pure 1-amino-7-naphthalenesulfonic acid crystals.
This method has been passed down and evolved over the years. Although there may be improvements and optimizations at present, the basic steps and principles probably follow this ancient method.

1-Amino-7-Naphthalenesulfonic Acid during storage and transportation

1-Amino-7-naphthalenesulfonic acid is a chemical substance, and many matters must be paid attention to during storage and transportation.
Bear the brunt. When storing, be sure to ensure that the warehouse environment is dry and well ventilated. Because of its certain hygroscopicity, if the environment is humid, it is easy to cause moisture and deterioration, which affects the quality. The warehouse temperature should also be kept stable to avoid large fluctuations in temperature to prevent chemical properties from changing. This is the principle of "dry to survive, temperature to last".
Furthermore, 1-amino-7-naphthalenesulfonic acid is quite sensitive to light, so it should be stored in a dark place. Light may cause it to undergo photochemical reactions, resulting in decomposition or structural changes. This so-called "hide away from light and protect its essence".
During transportation, the packaging must be solid and stable. This substance may be corrosive to a certain extent. If the packaging is damaged, it will not only cause damage to the transportation vehicle, but also endanger the safety of the transportation personnel and the surrounding environment. Suitable packaging materials need to be selected to resist vibration, collision and friction. This is "strengthen its packaging and resist external forces".
At the same time, it should also be separated from other incompatible substances during transportation. 1-Amino-7-naphthalenesulfonic acid may chemically react with certain substances, causing hazards, such as oxidants, strong bases, etc. " "Separation of heterogeneity, avoiding their mutual offenses" is the key to ensuring transportation safety.
In addition, whether it is storage or transportation, relevant personnel should be familiar with its nature and emergency treatment methods. In the event of an unexpected situation such as leakage, it can be responded to quickly and correctly to reduce the harm. This is "knowing its nature, knowing its changes, so as not to be worried". Only in this way can the safety and stability of 1-amino-7-naphthalenesulfonic acid during storage and transportation be ensured.