4-Hydroxy-1-Naphthalenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	768096
Chemical Formula	C10H8O4S
Molecular Weight	224.23
Appearance	Off - white to light yellow solid
Solubility In Water	Slightly soluble
Solubility In Organic Solvents	Soluble in some polar organic solvents like ethanol
Melting Point	127 - 131 °C
Boiling Point	Decomposes before boiling
Pka Value	Around 2 - 3 (approximate acidic dissociation constant)
Density	1.4 - 1.5 g/cm³ (approximate)
Stability	Stable under normal conditions, but sensitive to strong oxidizing agents
Odor	Odorless or very faint odor

Packing & Storage

Packing	100g of 4 - Hydroxy - 1 - Naphthalenesulfonic Acid packaged in a sealed plastic bag.
Storage	4 - Hydroxy - 1 - Naphthalenesulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, flames, and incompatible substances like strong oxidizing agents. Store in a tightly - sealed container to prevent moisture absorption and contamination, safeguarding its chemical integrity for future use.
Shipping	4 - Hydroxy - 1 - Naphthalenesulfonic Acid is shipped in properly sealed containers. It must be handled with care due to its chemical nature, following all relevant regulations to ensure safe transportation.

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General Information

Historical Development

The product of 4-hydroxy-1-naphthalenesulfonic acid has a long history of evolution. In the past, the Fang family first got involved in this product, but they did not know the details, but only got a crude understanding. After several generations of research, the technology has gradually refined. Begin to seek it with a simple method. Although it is effective, there are a lot of impurities.
Then, various sages worked tirelessly, and the method of improvement has become more and more new. Or change its raw materials, or change its process, to obtain pure products. At a certain time, the new technique has been completed, the yield has also increased, and the quality is better. Since then, 4-hydroxy-1-naphthalenesulfonic acid has gradually shown its ability in various fields and has a wide range of uses. The road of exploration in the past was difficult, but the ancestors were determined to eventually make this thing prosperous today, which can be a lesson for the future.

Product Overview

4-Hydroxy-1-naphthalenesulfonic acid, its state is crystalline. This product can be obtained by sulfonation of naphthol. It has the characteristics of acid and is widely used in the chemical industry.
Looking at its chemical structure, the hydroxyl group is connected to the naphthalene ring, and the sulfonic acid group is attached to it. This unique structure endows it with unique properties. In the dye industry, it can be an intermediate. After a series of reactions, it can produce brilliant dyes, enhance the color of fabrics, and add color to the world.
Furthermore, it is also potentially useful in the corner of pharmaceutical research and development, or due to its unique chemical activity. Although it is a chemical product, it can be used rationally for the benefit of people, shining brightly in various fields, and contributing to the progress of science and technology and industry.

Physical & Chemical Properties

The physical and chemical properties of 4-hydroxy-1-naphthalenesulfonic acid are related to many things. Looking at its shape, it often takes on a specific appearance. Its melting and boiling point is the inherent property of the substance, which has been measured and determined. In terms of solubility, in water and various solvents, it has different manifestations, either soluble or slightly soluble.
And its chemical activity is also the key. It can react with a variety of reagents and has unique chemical changes. In acid-base environments, the properties change. Whether its structure is stable or not is also the focus of research, affecting its storage and application.
This substance is useful in many fields, but the accurate grasp of its physical and chemical properties is necessary before rational application. Scientists should explore it in detail to clarify its properties and lay the foundation for various practicalities.

Technical Specifications & Labeling

Technical specification and labeling of 4-hydroxy-1-naphthalenesulfonic acid (commodity parameters)
4-hydroxy-1-naphthalenesulfonic acid is an organic compound. The technical specification is quite critical. When preparing, it is necessary to follow the precise ratio, using naphthalene as the starting material, through various steps such as sulfonation and hydrolysis. The reaction conditions must be strictly controlled, the temperature should be maintained in a specific range, and the reaction time is also fixed, so that high purity products can be obtained.
As for the label (commodity parameters), its appearance is often white to light yellow crystalline powder. The purity needs to reach a certain standard, and the impurity content is extremely low. Its solubility is clearly expressed in specific solvents, which are all important commodity parameters related to its application in industrial and scientific research fields. Accurate compliance with technical regulations and clear identification (commodity parameters) can ensure the quality and application efficiency of the product.

Preparation Method

The preparation method of 4-hydroxy-1-naphthalenesulfonic acid is related to the raw material and production process, reaction steps and catalytic mechanism. The preparation of naphthalene is often made of naphthalene as the starting material, through sulfonation, acidification and other steps.
First take an appropriate amount of naphthalene, co-locate it with concentrated sulfuric acid in a reactor, and control the temperature at about 160-180 ° C. When the number of sulfonation reactions is numbered, the naphthalene and sulfuric acid can fully react to generate 1-naphthalenesulfonic acid. Then, the reaction solution is cooled, diluted with an appropriate amount of water, and then heated to 120-140 ° C. A specific catalyst, such as mercury salt or iron salt, is added to promote the isomerization of 1-naphthalenesulfonic acid and convert it into 4-hydroxy-1-naphthalenesulfonic acid. After the reaction is completed, the pure 4-hydroxy-1-naphthalenesulfonic acid product can be obtained through cooling, crystallization, filtration, washing and other processes. This preparation method pays attention to the ratio of raw materials, temperature control and catalyst use to obtain the ideal yield and purity.

Chemical Reactions & Modifications

The wonders of chemistry are related to the change of substances and the change of properties. In today's discussion of 4 - Hydroxy - 1 - Naphthalenesulfonic Acid, its chemical reaction and modification are really the focus of our research.
At the end of the reaction, it meets with various reagents and can produce wonderful changes. Or translocation with bases and ions, the structure is slightly changed; or when encountering strong oxygen agents, functionalization and gradual change in properties. However, such reactions often depend on temperature, concentration, and catalytic agents. High temperature is fast, and if it is concentrated, the potential is strong. The catalytic agent can lead the reaction direction and save energy and time.
As for modification, it is designed to improve its performance. Or adjust its hydrophilicity to make it more meltable in water and liquid; or increase its stable state, avoiding light and heat. The modification method involves chemical modification, grafting and adding chains, and introducing new radicals, so that this substance can be used in industry and scientific research to have more functions and better efficiency.

Synonyms & Product Names

4-Hydroxy-1-naphthalenesulfonic acid has its own uses in the chemical industry, dyeing and weaving industries of the world. Its synonymous name is also known in the industry.
I have heard the ancestors say that when this acid first appeared in the world, it was valued by everyone because of its unique nature. At that time, although it was not called the same, it was known in the industry as one thing. Or there are those who call it "naphthalene sulfonic acid", although the names are different but the same; there are also those who call it "hydroxy naphthalenesulfonic acid" because of its characteristics, which are all synonymous names.
As for the name of the product, it also varies with the changes of the world. In the past, it was called "dyeing naphthalic acid" because it was mostly used for dyeing and weaving, which was an important substance for adding color; today, it is called "high-efficiency naphthalene sulfonate", which has excellent performance and significant effect in various industries. Although the names are different, they all refer to this 4-hydroxy-1-naphthalenesulfonic acid.

Safety & Operational Standards

4-Hydroxy-1-naphthalenesulfonic Acid Safety and Operation Specifications
For those with 4-hydroxy-1-naphthalenesulfonic acid, chemical substances are also used. If you want to make this thing, you should abide by the safety and operation specifications to be safe.
Let's talk about safety first. This thing may be irritating and can cause discomfort when it touches the skin. Therefore, when handling, you must wear protective clothing, wear a protective cover on your hands, and cover your face with a mask to prevent its powder from entering your eyes, nose, and mouth. If you accidentally touch it, rinse it with water as soon as possible, and seek medical attention if it is serious. It is also harmful to the gas, so when operating in a well-ventilated place, set up a ventilated device, and do not ignore it.
Times and operating specifications. When preparing, the amount of various medicines should be measured on a scale, which is not pleasant at all, and should not be increased or decreased at will. The utensils must also be clean and dry, without mixing with other things. When adding the medicine, it should be slowly poured in, and stirred at the same time to ensure that it is uniform. The temperature of the reaction must also be strictly controlled, measured with a thermometer, to maintain its appropriate degree. After the reaction, when taking the product, do it according to the law, and do not stain it.
The method of storage is also important. It should be placed in a cool and dry place, protected from fire, heat and light, to prevent deterioration.
In general, the preparation and storage of 4-hydroxy-1-naphthalenesulfonic acid are carried out in accordance with safety and operating standards, so as to ensure the smooth operation and safety of human equipment.

Application Area

4-Hydroxy-1-naphthalenesulfonic acid has a wide range of uses. In the dyeing and weaving industry, it can be used as a dye intermediate, and the dye aid has a gorgeous color, a firm color, and does not fade over time. In the field of pharmaceuticals, it also has important functions. It is a raw material for the synthesis of various drugs, or it can participate in the construction of active pharmaceutical ingredients to help the efficacy of drugs. And in chemical analysis, it can be used as a reagent to accurately determine the composition and content of certain substances. This is the main application field of 4-hydroxy-1-naphthalenesulfonic acid, which plays an indispensable role in all industries and promotes the development and progress of various industries.

Research & Development

Since modern times, the art of chemistry has become increasingly refined, and many new substances have emerged in the world. In today's words, 4-Hydroxy-1-Naphthalenesulfonic Acid is the key to chemical research.
We have studied this compound in detail to investigate its properties and structure. After repeated experiments, we have explored its synthesis method and strived to improve it. At first, the synthesis road was full of thorns, and the yield did not meet expectations. However, we were not discouraged, we devoted ourselves to research and improved the process, so that the yield gradually increased.
In the application of this substance, there is also much research. It has potential in various fields such as dyes and medicine. In the case of dyes, it can add bright and long-lasting color; in medicine, it may help the research and development of new drugs.
Looking to the future, we hope to further tap its potential and expand the field of application. We are willing to make unremitting efforts to promote the research and development of this compound, and contribute to the progress of chemistry and the prosperity of society.

Toxicity Research

The chemical industry is related to people's livelihood, and the toxicity study of the product is particularly important. Today there is 4 - Hydroxy - 1 - Naphthalenesulfonic Acid. The toxicity of this product should not be ignored.
Examine this product carefully. When experimenting, it is necessary to measure it carefully. Or take animals and observe their reactions and changes. Observe its eating, action, and mental state to judge the depth of its toxicity.
Also observe its impact on water, soil, and plants in the environment. If it is scattered in the soil, can the fertility and physical properties of the soil be changed? If it enters the water, can the aquatic spirit be damaged?
After this investigation, we can know the true appearance of the toxicity of 4 - Hydroxy - 1 - Naphthalenesulfonic Acid, which provides evidence for chemical use and environmental protection, to ensure the safety of people's livelihood and the protection of nature.

Future Prospects

I have dedicated myself to researching the product of 4 - Hydroxy - 1 - Naphthalenesulfonic Acid. Although this product is already available today, when I look at its future, it still has a wide range of possibilities.
The future development may be able to shine in the field of medicine. Its properties may be able to assist in the research of new drugs, cure various diseases, and solve the pain of the public. And in the field of materials, it may be able to be modified to obtain novel materials, which are specific and used in high-tech.
Furthermore, the method of synthesis can also be refined. If we can find a better way to reduce its cost and increase its yield, it will definitely be widely used. In this way, the future of 4 - Hydroxy - 1 - Naphthalenesulfonic Acid will rise like the sun, with a bright future, benefiting all people, and making extraordinary achievements in various fields.

Frequently Asked Questions

What are the main uses of 4-Hydroxy-1-Naphthalenesulfonic Acid?

4-Hydroxy-1-naphthalenesulfonic acid, this is an organic compound. It has a wide range of uses and has many important applications in the chemical industry of the past.
First, it is often used as a key intermediate in the preparation of dyes. Through a series of delicate chemical reactions, it can be skillfully converted into many colorful dyes. Taking the dyeing workshop of the past as an example, many bright fabrics are dyed with its participation. Due to the unique structure of 4-hydroxy-1-naphthalenesulfonic acid, it can endow the dye with excellent color stability and adhesion, making the dyed fabric lasting and bright and moving.
Second, in the field of pharmaceutical synthesis, it also has certain value. Its specific chemical properties can help to synthesize some drugs with special curative effects. Although ancient doctors did not fully understand its microscopic chemical mechanism, after long-term practice and exploration, they found that drugs made from this starting material have significant effects on some diseases. Such as some drugs that regulate qi and blood in the body and relieve pain, 4-hydroxy-1-naphthalenesulfonic acid may be an indispensable ingredient.
Third, it can also play a role in the development of surfactants. When making detergents in the past, adding an appropriate amount of 4-hydroxy-1-naphthalenesulfonic acid can improve the surface activity of the product and enhance the decontamination ability. Like the ancient method of laundry, with this aid, it can more effectively remove stains on clothes and make clothes as clean as ever.
In short, 4-hydroxy-1-naphthalenesulfonic acid plays a pivotal role in dyes, medicine, surfactants and many other fields, bringing many conveniences and improvements to industrial production and people's lives in the past.

What are the physical properties of 4-Hydroxy-1-Naphthalenesulfonic Acid?

4-Hydroxy-1-naphthalenesulfonic acid, this is an organic compound. Its physical properties are quite unique, so let me tell you one by one.
Looking at its appearance, it is often in the state of white to light yellow crystalline powder. In terms of solubility, this compound is soluble in water, which makes it better to disperse and participate in reactions in many aqueous solution systems or applications.
As for the melting point, it is within a specific range. However, due to differences in preparation methods and purity, the melting point value will fluctuate slightly. This melting point characteristic is of important reference significance for its heating treatment, separation and purification operations.
The density of 4-hydroxy-1-naphthalenesulfonic acid is also one of its important physical properties. The given density value reflects its mass per unit volume, which is an indispensable parameter in material measurement, process design, etc.
Furthermore, its odor is weak, usually without strong pungent or special odor. This point is related to the user's experience and environmental friendliness in the actual operation and application environment.
In addition, the chemical properties of the compound are relatively stable at room temperature and pressure. In case of specific conditions, such as high temperature and strong oxidants, corresponding chemical reactions will also occur. This stability and reactivity together form the basis for its application in different scenarios.
In summary, the physical properties of 4-hydroxy-1-naphthalenesulfonic acid, such as appearance, solubility, melting point, density, and odor, play a key role in its application in chemical, pharmaceutical, dye, and many other fields, and determine whether it can be adapted to specific processes and needs.

What are the chemical properties of 4-Hydroxy-1-Naphthalenesulfonic Acid?

4-Hydroxy-1-naphthalenesulfonic acid is one of the organic compounds. It is acidic because it contains a sulfonic acid group (-SO-H) in its molecule, which can release hydrogen ions in solution, so it is acidic.
In terms of its solubility, the sulfonic acid group is hydrophilic, so the substance has a certain solubility in water and can be partially dissolved in water to form a solution.
The chemical activity of 4-hydroxy-1-naphthalenesulfonic acid is also worthy of attention. Hydroxy (-OH) is connected to the naphthalene ring, which changes the electron cloud density of the naphthalene ring, making it more prone to electrophilic substitution reactions, such as halogenation and nitrification. The presence of sulfonic acid groups also affects the reaction check point and activity.
And the hydroxyl group of the compound can participate in the esterification reaction, and under appropriate conditions, it can be dehydrated and condensed with alcohols to form ester compounds.
Furthermore, under certain oxidation conditions, the hydroxyl group may be oxidized, causing its chemical structure to change and generating corresponding oxidation products.
In addition, 4-hydroxy-1-naphthalenesulfonic acid may have potential uses in dyes, medicine and other fields. Its structural properties make it possible to use it as an intermediate in the synthesis of specific dyes, and introduce chromophore groups through chemical reactions to obtain desired dyes. In medicine, or because of its special chemical structure, it exhibits certain biological activity after modification and is used in drug development.

What is the production method of 4-Hydroxy-1-Naphthalenesulfonic Acid?

The preparation method of 4-hydroxy-1-naphthalene sulfonic acid is an ancient chemical technique, and it follows the classical method. In the past, naphthalene was often used as the starting material to prepare this acid.
First take the naphthalene, mix it with sulfuric acid, and perform a sulfonation reaction at a suitable temperature and conditions. When naphthalene encounters sulfuric acid, sulfonic acid groups (-SOH) gradually enter the structure of naphthalene. This process requires careful attention to the temperature and reaction time. If the temperature is too high, side reactions will occur and the product will be impure; if the temperature is too low, the reaction will be slow and inefficient. Generally speaking, the temperature is controlled in a specific range, so that the reaction is smooth and orderly.
After the sulfonation reaction is completed, the product contains a variety of sulfonic acid isomers, including 1-naphthalenesulfonic acid. However, to obtain 4-hydroxy-1-naphthalenesulfonic acid, further conversion is required. Then 1-naphthalenesulfonic acid is melted with an alkali to make it co-heat with the alkali. Under the action of alkali, the sulfonic acid group undergoes specific chemical changes, and the hydroxyl group (-OH) gradually enters the fourth position of the naphthalene ring, and finally obtains 4-hydroxy-1-naphthalenesulfonic acid.
When operating, the utensils used must be clean and dry to prevent impurities from disturbing it. The purity of the raw material is also crucial. If the purity is high, the reaction will be smooth and the quality of the product will be excellent. Separation and purification between each step are also key, such as filtration, crystallization, recrystallization, etc., to remove impurities and improve the purity of the product. In this way, 4-hydroxy-1-naphthalenesulfonic acid can be prepared through various steps.

4-Hydroxy-1-Naphthalenesulfonic Acid in storage and transportation

4-Hydroxy-1-naphthalenesulfonic acid is one of the chemical substances. When storing and transporting, pay attention to many matters.
First words storage, this substance should be placed in a cool and dry place. Because of the cool and dry environment, it can avoid its qualitative change due to temperature and humidity discomfort. If it is placed in a high temperature and humid place, it may cause chemical reactions, which will damage its quality. And it should be stored in isolation from oxidants, alkalis, etc. Oxidants are highly oxidizing, and alkalis are chemically active. When they coexist with them, they are prone to violent reactions and even cause danger. Make sure that the storage container is well sealed to prevent leakage. Once leaked, it will not only damage the substance itself, but also cause pollution to the surrounding environment.
The second time is about transportation. When transporting, the packaging must be stable and solid. The sturdy packaging can protect it from damage and leakage during the bumpy transportation. The transportation vehicle should also choose its suitable one, and it is necessary to ensure that the carriage is clean and dry, and there is no debris that can react with it. During transportation, it is not allowed to be mixed with contraband substances, and the transportation specifications should be strictly adhered to. The escort personnel also need to be familiar with its characteristics and emergency response methods. In case of emergencies, they can respond quickly and properly to ensure the safety of transportation. In this way, it is necessary to ensure that 4-hydroxy-1-naphthalene sulfonic acid has no difference in storage and transportation, so as to maintain its quality and safety.