4-Hydroxynaphthalene-1-Sulphonic Acid

Lingxian Chemical

Specifications

HS Code	620848
Chemical Formula	C10H8O4S
Molar Mass	224.23 g/mol
Appearance	Solid
Solubility In Water	Moderately soluble
Melting Point	Approx. 120 - 130 °C
Boiling Point	Decomposes before boiling
Acidity	Weak acid
Odor	Odorless
Density	Approx. 1.5 g/cm³
Stability	Stable under normal conditions

Packing & Storage

Packing	500g of 4 - Hydroxynaphthalene - 1 - Sulphonic Acid packaged in air - tight plastic bags.
Storage	4 - Hydroxynaphthalene - 1 - Sulphonic Acid should be stored in a cool, dry place, away from heat sources and direct sunlight. Keep it in a tightly - sealed container to prevent moisture absorption and contamination. Store it separately from incompatible substances, such as strong oxidizing agents and bases, to avoid chemical reactions that could pose risks.
Shipping	4 - Hydroxynaphthalene - 1 - Sulphonic Acid is shipped in well - sealed, corrosion - resistant containers. Special handling precautions are taken due to its chemical nature, ensuring safe transportation and compliance with regulations.

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General Information

Historical Development

4-Hydroxynaphthalene-1-sulfonic acid, the origin of which can be traced back to the past. At the beginning, in the course of various chemical investigations, this compound gradually entered the field of vision of researchers.
At that time, science and technology were not as bright as they are today, and it was not easy to explore the properties and preparation of this acid. The public has worked hard, and after years of research and countless attempts, they have achieved something. The method of preparation has also evolved with the passage of time. Since the initial rough and simple approach, it has gradually become more refined and improved.
Its application field has also become wider and wider from narrow. At first, it was only the object of research in the laboratory, but later in many fields such as industry and medicine, it has emerged and is used by the world. Looking at the course of its development, it is like a long and winding river, galloping forward with the flow of time, constantly expanding its influence, leaving a deep imprint on the field of chemistry.

Product Overview

4-Hydroxynaphthalene-1-sulfonic acid is an important substance for chemical research. Its properties are unique, in the form of white to light yellow crystalline powder, with a certain solubility in water. This substance is widely used in the chemical field and is often used as a dye intermediate. Through specific chemical reactions, it can be converted into many brightly colored dyes. And the presence of hydroxyl and sulfonic acid groups in its structure gives it unique chemical activity. During the synthesis process, it is necessary to precisely control the reaction conditions, such as temperature, pH, etc. Because its properties are quite sensitive to the reaction environment, a slight deviation may affect the quality and yield of the product. Through in-depth research and exploration, the application prospect of 4-hydroxynaphthalene-1-sulfonic acid is expected to be broader, which will contribute to the development of the chemical industry.

Physical & Chemical Properties

4-Hydroxynaphthalene-1-sulfonic acid, this substance is also often called 1,4-acid, and its physical and chemical properties are quite unique. Looking at its shape, it is mostly white to light yellow crystalline powder at room temperature. Its melting point is about 120 ° C - 125 ° C, and it gradually melts when heated, like ice dissolving in the warm sun.
In terms of its solubility, it is soluble in water, just like a fish entering a shallow abyss, and it is infinitely soluble. In alcohols and ether organic solvents, it also has a certain ability to dissolve. In terms of chemical activity, because it has both hydroxyl and sulfonic acid groups, it is both acidic and can be neutralized with alkali substances, and can participate in many organic reactions, such as esterification and sulfonation. Due to its special physical and chemical properties, it is widely used in the fields of dyes, medicine, etc., just like masonry in Guangsha, it is indispensable.

Technical Specifications & Labeling

For 4-hydroxynaphthalene-1-sulfonic acid, its process specifications and identification (commodity parameters) are the key. The process specifications of this product are related to the production method, from the selection of raw materials to the synthesis steps, there are regulations. The material ratio is accurate, and the reaction conditions such as temperature and duration must be strictly controlled to obtain a good product.
Its identification (commodity parameters) clearly shows the character, purity, impurity limit, etc. The character needs to show a specific color and state to prove its quality. The standard of purity is to determine its advantages and disadvantages, and the impurity limit is strictly controlled to avoid it affecting the quality. According to this process specification and identification (commodity parameters), qualified 4-hydroxynaphthalene-1-sulfonic acid can be prepared, which can be used in various required places and lay the foundation for chemical engineering.

Preparation Method

The preparation method of 4-hydroxynaphthalene-1-sulfonic acid is related to the raw material and production process, reaction steps and catalytic mechanism.
First take the naphthalene as the initial raw material, and use concentrated sulfuric acid as the sulfonation reagent. In a specific reactor, the temperature is controlled to about 160-180 ° C, and the naphthalene and concentrated sulfuric acid are added in a certain proportion. This is the step of sulfonation. During this time, the specific position of the naphthalene is attacked by concentrated sulfuric acid, and the intermediate of naphthalene sulfonic acid is gradually formed.
Then, an appropriate amount of water and a specific catalyst are added to the intermediate, and the temperature is raised to about 120-140 ° C The purpose of this step is to properly convert the sulfonic acid group and introduce the hydroxyl group to obtain the target product 4-hydroxy naphthalene-1-sulfonic acid.
In the whole process, precise temperature control, strict time control, and proper selection of catalyst and raw material ratio are all key. This preparation method can make the product purity and yield reach a high level, laying the foundation for subsequent industrial applications.

Chemical Reactions & Modifications

It is very important to study the chemical reaction and change of 4 - Hydroxynaphthalene - 1 - Sulphonic Acid. Between chemical reactions, changes in conditions often cause differences in products. For example, the rise and fall of temperature and the amount of agent can affect the way of chemical reaction.
If you want to improve its properties, you must carefully observe the mechanism of chemical reaction. Only by knowing the structure of its molecules and the strength of its bonds can you understand the root of the change. With exquisite methods, you can adjust the environment of the reaction, or you can get products with excellent properties.
If you use the ancient method, you may not be able to achieve it. Therefore, you should seek new ideas and use new techniques to explore the best method in chemical application. It is our task to perfect the properties of 4 - Hydroxynaphthalene - 1 - Sulphonic Acid to meet all needs.

Synonyms & Product Names

4-Hydroxynaphthalene-1-sulfonic acid, its synonymous name and the name of the product are quite important. In various exchanges in the industry, various titles may vary.
Its synonymous name is called naphthol sulfonic acid, and it is also called hydroxynaphthalene sulfonic acid. This is due to the complexity of chemical naming rules, resulting in different expressions of the same substance.
And the name of the product, the manufacturer has its own choice. Either for outstanding characteristics, or according to the production process, take different names. Such as "superior naphthol sulfonic acid preparation" to show the quality; and "high-efficiency hydroxynaphthalene sulfonic acid product" to recognize its effectiveness.
However, whether it is a synonymous name or a commodity name, it refers to this 4-hydroxynaphthalene-1-sulfonic acid. Practitioners should make it clear that its synonyms refer to the same thing to avoid confusion and hinder research, production and trade.

Safety & Operational Standards

4-Hydroxynaphthalene-1-sulfonic acid product safety and operation specifications
Fu 4-Hydroxynaphthalene-1-sulfonic acid, chemical products, in the experiment and production of all things, safety and operation norms are essential.
#1. Storage rules
This product should be stored in a cool, dry and well-ventilated place. Keep away from fire and heat sources to prevent accidents. It should be stored in separate stores with oxidants and alkalis, and must not be mixed with each other to avoid the risk of chemical reactions. The storage area should be equipped with suitable materials to contain leaks.
#2. Standard operation
When operating, be sure to strictly follow the operating procedures. Operators can only act when they have undergone professional training and are familiar with its nature. When operating, they should wear appropriate protective clothing, protective gloves and goggles to prevent contact with the skin and eyes. If working in a poorly ventilated place, effective ventilation equipment should be prepared to exhaust exhaust gas and keep the air fresh.
#3. Emergency treatment methods
Once a leak occurs, irrelevant people should be quickly ordered to evacuate the contaminated area to a safe place. Emergency responders must wear protective clothing and protective equipment to prevent the leakage from spreading. Small leaks can be absorbed by inert materials such as sand and vermiculite; large leaks need to be embanketed and contained before proper disposal.
If you accidentally touch the skin, you should immediately rinse with a lot of water, followed by soap; if it enters the eyes, immediately rinse with flowing water or normal saline, and seek medical attention.
In short, in the treatment of 4-hydroxynaphthalene-1-sulfonic acid, safety must be the priority, and strict operating norms must be adhered to, so as to ensure that everything goes smoothly and there is no danger.

Application Area

4-Hydroxynaphthalene-1-sulfonic acid has a wide range of application fields. In the dyeing and weaving industry, it can be used as a dye intermediate to help fabrics get brilliant colors. The dyed fabrics have good color fastness and are not easy to fade after years and washing. In the pharmaceutical field, it also has important uses. It is a key raw material for the synthesis of specific drugs and has auxiliary functions for disease treatment. In the chemical production field, it can participate in the preparation of a variety of fine chemicals, such as some high-performance additives, which can improve product performance and quality. This substance has shown unique value in many application fields and has contributed significantly to industrial development and quality of life improvement.

Research & Development

The research and development of 4-hydroxynaphthalene-1-sulfonic acid is related to this compound, and our generation has dedicated himself to studying it. After repeated experiments, its chemical characteristics have been analyzed in detail. This substance has great potential in many fields, with its unique structure and special reactivity.
We have explored its synthesis path with exquisite methods, and strive to optimize the process and improve the yield. Careful consideration of the reaction conditions, temperature, pressure, and the ratio of reactants are all key. After unremitting attempts, some achievements have been made, and the synthesis method has gradually improved.
At the same time, consider its application prospects. In the dye industry, it may be possible to develop novel dyes with bright and long-lasting color based on their characteristics. In the field of medicine, through in-depth research, its pharmacological activity may be discovered, laying the foundation for the creation of new drugs.
In short, the research on 4-hydroxynaphthalene-1-sulfonic acid is advancing steadily, and it is expected to contribute to the development of multiple industries in the future and open up a new world.

Toxicity Research

The toxicity of 4 - Hydroxynaphthalene - 1 - Sulphonic Acid is an important task in chemical research. Examine the properties of this substance in detail to understand its impact on the environment and the human body.
After various experiments, observe its contact with other substances and measure the quality of its emission. In water, observe its decomposition state, explore its dissolved ions, and observe whether it causes water pollution and endangers aquatic organisms.
In animal testing, observe the signs of its entry into the body. Observe changes in its breathing and movements, whether there is any discomfort, and whether there is any damage to the organs. If the dose is increased, observe the drama of its reaction to determine the degree of its toxicity.
The results of research can be used in the chemical industry to establish regulations and regulations to avoid hurting people and the environment, ensure the safety of all beings, and protect the beauty of nature, so that the benefits of this product outweigh the disadvantages, and benefit the world without harm.

Future Prospects

Guanfu 4 - Hydroxynaphthalene - 1 - Sulphonic Acid, although it has been researched and produced at present, but our generation looks to the future, there are still many areas that can be expanded.
In the future, it may be possible to improve the synthesis method, making the process simpler, reducing energy consumption, and improving yield and purity. Its application field is also expected to expand. In the field of medicine, it may be able to use its characteristics to develop new drugs and cure more diseases. In material science, it may be able to create materials with unique properties to meet the needs of high-tech.
Furthermore, the exploration of its physical and chemical properties may also have new gains. Or discover unprecedented reactions and add to the development of chemistry. In the future, 4 - Hydroxynaphthalene - 1 - Sulphonic Acid will surely bloom more brilliantly and contribute to the progress of mankind.

Frequently Asked Questions

What are the main uses of 4-Hydroxynaphthalene-1-Sulphonic Acid?

4-Hydroxynaphthalene-1-sulfonic acid has a wide range of uses. In the chemical industry, it is an important raw material for organic synthesis. When making dyes, it can be used as an intermediate, and through many chemical reactions, a wide variety of dyes can be generated to meet the needs of the printing and dyeing industry for colorful colors.
In the dyeing workshop, the color of dyes, whether bright and moving, or simple and elegant, all rely on 4-hydroxynaphthalene-1-sulfonic acid as the base, which is made by ingenious preparation and fine synthesis. After the fabric is printed and dyed, the color fastness is good, it lasts for a long time, and the color is still bright and bright.
In the pharmaceutical and chemical industry, this acid also plays an important role. It participates in the drug synthesis process, or is a key reactant, or helps to stabilize the drug structure. Doctors need it as an adjuvant to form a good medicine with exact curative effect and solve the pain of the world.
In addition, in the preparation of some special chemicals, 4-hydroxynaphthalene-1-sulfonic acid is also indispensable. Such as some functional materials, through their participation in the synthesis, the unique properties of the material, or excellent adsorption, or special optical and electrical properties, to meet the diverse needs of new materials for technological development.
Workers in the factory, according to their characteristics, control the temperature, time, and proportion of the agent, and carefully operate to obtain high-quality products for use in all parties, promoting the prosperity of chemical, pharmaceutical, materials, and other industries, benefiting people's livelihood, and enhancing the prosperity of the country.

What are the chemical properties of 4-Hydroxynaphthalene-1-Sulphonic Acid?

The chemical properties of 4-hydroxy naphthalene-1-sulfonic acid are very important and are related to many chemical and scientific research fields. This compound is acidic because its sulfonic acid group can dissociate hydrogen ions in water, so it is acidic and can neutralize with alkali substances to form corresponding salts.
In addition, its hydroxyl groups also have specific activities. Oxygen atoms in hydroxyl groups have lone pairs of electrons and can participate in a variety of reactions. In case of suitable reagents, hydroxyl groups can undergo substitution reactions or form hydrogen bonds with certain substances. The function of this hydrogen bond is crucial in affecting the physical and chemical properties of the compound, such as its melting point, boiling point, and solubility in specific solvents.
The naphthalene ring structure of 4-hydroxynaphthalene-1-sulfonic acid endows it with a certain conjugate system. This conjugate system gives the compound a special electron cloud distribution, resulting in its optical properties. For example, it may absorb or emit light of specific wavelengths, which may be used in some photochemical fields. And the stability of the naphthalene ring also affects the overall chemical stability of the compound. Under normal conditions, it is relatively stable. However, under extreme conditions such as strong oxidizing agents or high temperatures, the structure of the naphthalene ring may be damaged, resulting in changes in the properties of the compound.
Its sulfonic acid group not only confers acidity, but also enhances the water solubility of the compound. The sulfonic acid group is a strong hydrophilic group, which makes 4-hydroxy naphthalene-1-sulfonic acid more soluble in water or polar solvents. This property is extremely important in industrial applications such as dyes and surfactants, and helps it play a role in aqueous solutions.
In addition, the chemical properties of the compound make it an important intermediate for organic synthesis. By chemically modifying its hydroxyl groups, sulfonic acid groups and naphthalene rings at different positions, a series of derivatives with specific functions can be prepared, which can be used in many fields such as medicine, pesticides, and materials science.

What are the preparation methods of 4-Hydroxynaphthalene-1-Sulphonic Acid?

The preparation method of 4-hydroxy naphthalene-1-sulfonic acid has been known for a long time. The method is multi-terminal, and the following are common.
First, naphthalene is used as the starting material. Schilling naphthalene sulfonation, sulfuric acid is selected as the sulfonation reagent. At a specific temperature and duration, the naphthalene interacts with sulfuric acid, and the sulfonic acid group is then introduced into the naphthalene ring. However, in this step, the position selectivity of the sulfonic acid group is not ideal, or a variety of sulfonated isomers are obtained. Subsequent fine separation is required to obtain a product mainly composed of 1-sulfonic acid groups. Next, hydroxylation of 1-sulfonic naphthalene is carried out. This process is often carried out by alkali fusion method, that is, a strong base such as sodium hydroxide is co-melted with 1-sulfonic acid naphthalene, and the sulfonic acid group is converted into a hydroxyl group to obtain 4-hydroxynaphthalene-1-sulfonic acid. However, the alkali fusion method requires high temperature conditions, energy consumption is quite large, and strict equipment requirements, so careful operation is also required.
Second, specific naphthalene derivatives can also be used as starting materials. If a naphthalene derivative containing a suitable substituent is found, the target product can also be obtained through clever reaction design. For example, some naphthalene derivatives containing halogen atoms can be introduced by nucleophilic substitution reaction. First, the nucleophilic reagent reacts with the halogenated naphthalene derivative to introduce the hydroxyl group, and then the sulfonation reaction is carried out to add the sulfonic acid group. This approach can better control the position of the substituents, and the purity of the product is high. However, it may be difficult to obtain the starting materials and the cost may be high.
Third, there is a method of catalytic synthesis. The selection of special catalysts can improve the selectivity and efficiency of the reaction. For example, some metal complex catalysts can guide the substitution of sulfonic acid groups and hydroxyl groups at specific positions in the sulfonation and hydroxylation of naphthalenes. This catalytic method has relatively mild conditions, low energy consumption, and good product yield and purity. However, the preparation and recovery of catalysts are more complicated, and cost is also a consideration.
All kinds of preparation methods have their own advantages and disadvantages. It is necessary to weigh the cost, yield, purity and other factors according to the actual needs, and choose the appropriate one to use.

What is the price range of 4-Hydroxynaphthalene-1-Sulphonic Acid in the market?

4-Hydroxynaphthalene-1-sulfonic acid is difficult to determine within the range of market prices. The price of this chemical often varies due to various factors.
First, the price of raw materials has a great impact. If the basic raw materials required for its preparation are abundant and affordable, the price of 4-hydroxynaphthalene-1-sulfonic acid may stabilize and decrease; conversely, if raw materials are scarce, the price will rise, and the price of this product will rise accordingly.
Second, the preparation process is also key. Sophisticated and efficient technology can reduce its production cost, and the price may be more affordable in the market competition; if the process is complicated and the cost is high, the price will increase in order to ensure profitability.
Third, the state of market supply and demand determines the price. If the market has strong demand for this product and limited supply, its price will rise; if demand is weak and excess supply, the price may decline.
According to past market conditions and prices of similar chemicals, the price of 4-hydroxynaphthalene-1-sulfonic acid fluctuates between tens of yuan and hundreds of yuan per kilogram. However, this is only a rough guess. To know the exact price, you should consult chemical product suppliers, traders, or refer to the latest quotations from professional chemical product price information platforms to obtain an accurate figure.

4-Hydroxynaphthalene-1-Sulphonic impact of Acid on the environment

4-Hydroxynaphthalene-1-sulfonic acid, this substance has a very important impact on the environment. Its effect on the environment can be viewed from several angles.
First of all, its chemical properties. 4-Hydroxynaphthalene-1-sulfonic acid has acidic properties. In the environment, its acidity or cause changes in the pH of water bodies and soils. If it flows into water bodies, or enhances the acidity of water bodies, it has a great impact on the survival and reproduction of aquatic organisms. Many aquatic organisms are extremely sensitive to the pH of water bodies. Changes in acidity may cause physiological disorders, growth disorders, and even life-threatening, resulting in biodiversity loss.
Secondary and ecotoxicity. This substance may be toxic to organisms. In soil, it may affect the activity and community structure of soil microorganisms. Soil microorganisms are crucial in soil nutrient cycling and organic matter decomposition processes. If they are suppressed, the function of soil ecosystems will be destroyed, soil fertility may also be affected, and then plant growth will be affected. In aquatic ecosystems, 4-hydroxynaphthalene-1-sulfonic acid may be poisonous to aquatic animals, such as fish, shellfish, etc., can enter organisms through gills, skin, etc., interfering with their normal physiological metabolism, such as damaging the nervous system and affecting respiration.
Furthermore, consider its environmental persistence. If this substance is difficult to degrade in the environment, it will remain for a long time. It persists in soil and water for a long time, accumulates continuously, and the scope of influence may gradually expand, and the degree of influence may also deepen. It exists in the environment for a long time, or is transmitted and enriched through the food chain. Low-level organisms ingest the environmental medium containing this substance, and higher-level organisms prey on lower-level organisms. The concentration of this substance in organisms gradually increases, which may eventually endanger human health.
In summary, the impact of 4-hydroxynaphthalene-1-sulfonic acid on the environment is complex and far-reaching, or it may cause imbalance in the ecosystem and damage to biodiversity. Therefore, its production, use and discharge management should be carefully managed to reduce its harm to the environment.