4-Hydroxy-2,7-Naphthalenedisulfonic Acid

Lingxian Chemical

Specifications

HS Code	449218
Chemical Formula	C10H8O8S2
Molar Mass	320.3 g/mol
Appearance	White to off - white solid
Solubility In Water	Soluble
Acidity	Diacidic
Pka1	Around 2 - 3
Pka2	Around 5 - 6
Melting Point	Decomposes
Density	Approx. 1.7 - 1.8 g/cm³
Stability	Stable under normal conditions

Packing & Storage

Packing	1 kg of 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid packaged in a sealed plastic bag.
Storage	4 - Hydroxy - 2,7 - Naphthalenedisulfonic 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 contamination. This helps maintain its chemical integrity and reduces the risk of reactivity or degradation.
Shipping	4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid is shipped in well - sealed containers, safeguarded from moisture and physical damage. Shipments follow strict chemical transport regulations to ensure safety during transit.

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4-Hydroxy-2,7-Naphthalenedisulfonic Acid

General Information

Historical Development

The industry of chemical industry is changing with each passing day. There is a name 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid, and its prosperity in the industry also has considerable traces.
In the past, chemistry was not prosperous for a long time, and all kinds of research were still being pioneered. However, a group of people with lofty ambitions diligently explored the field of chemistry. At that time, the understanding of this thing was still shallow, and only a few or two of its characteristics were known.
And as the years passed, the number of researchers became more and more, and the research became deeper. People explored its structure and properties in detail, and gained a lot of new knowledge. The method of its synthesis was also gradually refined. At first, the synthesis was difficult and the yield was quite low. After repeated speculation and improvement, the process became more and more mature, and the yield also increased significantly.
As for today, 4-Hydroxy-2,7-Naphthalenedisulfonic Acid has been widely used in various chemical processes, in dyes, medicine and other industries. Looking at its past and present development, it is a vivid portrayal of the evolution of chemical research. It is also expected to have new achievements in the future, adding brilliance to the industry.

Product Overview

4-Hydroxy-2,7-naphthalene disulfonic acid is an important compound in the chemical industry. Its appearance is often in a specific state, either as a powder or a crystal, and the color is also different. This compound has unique chemical properties and can be used as a key reagent in many chemical reactions.
It has a wide range of uses. In the dye industry, it can be used as an important raw material to help dyes have a brighter color and better fastness. In the field of medicine, it can be treated by special processes and can become the basic ingredient for the development of new drugs to help treat diseases. In scientific research, chemists often use its unique properties to explore new chemical reaction paths, contributing to the progress of chemical science.
The preparation of this compound requires a specific process flow, and the reaction conditions are strictly controlled. Temperature, pressure and the proportion of reactants will affect the purity and yield of the product. Scientists have repeatedly tested in the laboratory to strive for excellence and strive to optimize the preparation method to obtain better products.

Physical & Chemical Properties

4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid is a unique compound. Its physical properties are unique, the appearance is often fine powder, the color is white as snow, and when placed in light, it seems to have a subtle light flickering, just like fine ice crystals. Its texture is delicate and smooth to the touch.
As for chemical properties, this compound has certain stability. In a common mild environment, it is not easy to react with surrounding substances in a hurry. However, when it encounters strong acids and alkalis, it will appear lively. It can be cleverly combined with alkali substances to generate different salts. Its reaction process is subtle and orderly, like a delicate dance. Each atom follows the established rules and rearranges the combination, revealing a wonderful landscape of chemical change. It has unique applications and value in many chemical fields.

Technical Specifications & Labeling

4-Hydroxy-2,7-naphthalene disulfonic acid is a very important chemical raw material. Its process specifications are related to various elements. The production needs to follow a specific process, from the selection of raw materials to the control of the reaction, all of which should be rigorous. Its purity, color, particle size, etc. are all key product parameters.
To understand its quality, it must be identified with accurate standards. To measure its content, you can use the method of high-performance liquid phase to observe its purity geometry. To observe its color, you need to examine it under specific light, and there should be no variegation. There are also professional equipment for particle size measurement.
Strictly adhere to process specifications and accurately identify, in order to obtain high-quality 4-hydroxy-2,7-naphthalene disulfonic acid to meet the needs of various industries.

Preparation Method

The preparation method of 4-hydroxy-2,7-naphthalene disulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism. For its preparation, naphthalene is first taken as the initial raw material and sulfonated with concentrated sulfuric acid to obtain naphthalenesulfonic acid intermediates. When sulfonating, the temperature is controlled at one hundred and twenty to one hundred and fifty degrees Celsius for about three hours to introduce the sulfonic acid group into a specific position in the naphthalene ring.
Then, the intermediate is reacted with the oxidant in a specific solvent under the catalysis of a metal salt. This step is the key transformation. Metal salts such as copper sulfate can increase the reaction rate and yield. Hydrogen peroxide is preferably selected as the oxidant, and the reaction temperature is maintained at sixty to eighty degrees Celsius for about two hours
After neutralization and purification steps, the excess acid is neutralized with sodium hydroxide, and then extracted and recrystallized with organic solvent to obtain pure 4-hydroxy-2,7-naphthalene disulfonic acid products. Only by precisely controlling each step can high-quality products be obtained to meet the needs of industry and scientific research.

Chemical Reactions & Modifications

Modern chemical refinement, in the study of various things to seek details. In today's words, 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid, its chemical reaction and changing properties are particularly important to researchers.
Looking at its reaction, when it encounters with various reagents, it often produces specific transformation. Or neutralization, or addition, are all based on the laws of chemistry. However, if you want to change its changeable nature and make it suitable for use, you need to study its rationale.
Want to change its nature, or adjust the temperature, or change the amount of agent, or the environment where it is easy to react. After various attempts, we hope to find a good way to make this thing have new energy, or increase its stability, or change its solubility, in order to meet the needs of everything. Although the road is long and arduous, yet those who study are determined and determined, and they must be poor in their knowledge. They are expected to add new achievements to the field of chemistry and be used by the world.

Synonyms & Product Names

4-Hydroxy-2,7-naphthalene disulfonic acid, in the field of my chemical research, has many synonymous names and trade names. Its synonymous names vary due to changes in chemical naming rules and academic habits. Or "4-hydroxy-naphthalene-2,7-disulfonic acid", which is the title determined according to its chemical structure, clearly showing the location of hydroxyl and sulfonic acid groups.
As for trade names, the industry is also different. Because different manufacturers have different marketing strategies. A certain factory or name is "Naphthalene Youjing-4H", which means that it has excellent performance in specific fields, such as industrial cleaning, fabric treatment, etc., and can be excellent and clean. Some manufacturers call it "Jingliangsu-27", emphasizing that it may bring crystal and shiny effects, and can improve the appearance quality of products in paints, pigments and other industries. These synonymous names and trade names are all born to facilitate the exchange, promotion and application of this chemical product in the industry.

Safety & Operational Standards

4-Hydroxy-2,7-naphthalene disulfonic acid, this is an important substance in chemical research. Regarding its safety and operating practices, it needs to be discussed in detail.
In terms of safety, the first priority is to protect yourself. When exposed to this substance, appropriate protective equipment must be worn. If wearing special protective gloves to prevent it from touching the skin, it may be sensitive or corrosive to the skin. Professional goggles should also be used to protect the eyes to avoid it entering the eyes. If it is not carefully entered, it may cause serious eye damage.
Operational norms should not be ignored. In laboratory operations, good ventilation should be ensured. Because the substance under specific conditions, or volatilize harmful gases, good ventilation can be dispersed in time to prevent it from accumulating indoors and endangering the health of the experimenter. And when operating, the action should be steady and accurate to prevent the substance from spilling. If there is a spill, it needs to be cleaned up immediately according to the established process, and it cannot be slack.
Furthermore, storage should also be paid attention to. 4-Hydroxy-2,7-naphthalene disulfonic acid should be stored in a dry and cool place, away from fire sources and oxidants. Because of its active chemical properties, it can be exposed to fire or oxidants, or cause violent reactions, endangering safety.
In summary, in the process of studying 4-hydroxy-2,7-naphthalene disulfonic acid, always keep in mind the safety and operating standards to ensure the smooth operation of the experiment and the safety of personnel.

Application Area

4-Hydroxy-2,7-naphthalene disulfonic acid has a wide range of uses. In the field of printing and dyeing, it can be used as a dyeing aid to make the fabric color uniform and firm, and the color is bright and long-lasting. In chemical synthesis, it is often an important raw material for the preparation of various fine chemicals.
In medical research, it may have potential utility, or can assist in the synthesis of active ingredients, or it may be useful in drug carriers. Also in the field of materials science, it can improve the properties of materials, such as enhancing the adsorption and stability of materials. Therefore, 4-hydroxy-2,7-naphthalene disulfonic acid has its important value in many application fields, and it is a compound that cannot be underestimated.

Research & Development

In recent years, Yu devoted himself to the research of 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid. This material is special, has a wide range of applications, and has potential in various fields.
At the beginning, analyze its physicochemical properties and explore its structure. After repeated experiments, its melting point, solubility, etc., and use the method of spectroscopy to clarify the structure of its molecules, in order to accurately understand.
Then, study the method of its preparation. Try various paths, or change the temperature of the reaction, or adjust the amount of reagents, so as to increase the yield and purity. After years of hardships, the method of optimization is gradually obtained, and the results are beginning to show.
Today, I hope to extend the results obtained. Work with colleagues to expand the field of its application. Or used in medicine, or applied to chemical industry, so that this substance can be used to its fullest extent, so as to promote the progress of the industry and seek the benefit of society.

Toxicity Research

Taste and hear that all things have properties, especially in the study of chemical products and toxicity. Now look at 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid. The observation of its properties is related to everyone's health and environmental safety.
Examine this acid in detail. It needs to study the rules of its diffusion in different media and the changes caused by interaction with other things. In the biological body, observe its path of travel and the disturbance of visceral functions. Observe whether it enters the body and accumulates in a certain part, causing damage to function.
Also examine its damage to water, soil and vegetation in the environment. Observe whether there is secondary toxicity during its degradation period. In the study of toxicity, we must integrate multiple methods to analyze the microscopic changes, test the macroscopic effects, predict the harm, prevent the disease from developing, ensure the safety of all living beings, and protect the tranquility of the environment.

Future Prospects

Wuguanfu 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid has extraordinary potential. In the field of chemical industry, it can be used as dyes and pharmaceutical intermediates, and has a wide range of uses. Although there are existing methods for preparation, there are still many shortcomings.
Looking to the future, if we can focus on the synthesis process and optimize the reaction conditions, it may greatly increase its yield and reduce its cost. And the exploration of its derivatives is also promising. It may be able to open up new medical categories and add new avenues for disease treatment; in the dye industry, it may also create new products with brighter color and better fastness.
With time and unremitting research, 4 - Hydroxy - 2,7 - Naphthalenedisulfonic Acid will be able to shine, making great contributions to industry and people's livelihood, and the prospect is really promising.

Frequently Asked Questions

What is the main use of 4-Hydroxy-2, 7-Naphthalenedisulfonic Acid?

4-Hydroxy-2,7-naphthalene disulfonic acid is one of the organic compounds. It has a wide range of uses and has important applications in many fields.
In the dye industry, this substance plays a key role. Due to its unique structure and specific chemical properties, it can be used as an important intermediate for synthesizing dyes. Through a series of chemical reactions, it can be converted into various dyes with bright colors and excellent properties. It is widely used in fabric dyeing and other aspects to make fabrics show rich and colorful colors and meet people's needs for textile aesthetics.
In the field of medicinal chemistry, 4-hydroxy-2,7-naphthalene disulfonic acid also has its uses. It can be used as a starting material or key structural unit for the synthesis of certain drug molecules. Due to its special chemical structure, it helps to construct molecules with specific biological activities, providing an important foundation for the development of new drugs, helping humans fight various diseases and improve health and well-being.
In addition, this compound is also indispensable in the preparation of some functional materials. With its unique physical and chemical properties, it can participate in the synthesis and modification of materials, endowing materials with specific adsorption properties, optical properties, etc., thereby expanding the application range of materials and meeting the needs of different fields for special functional materials.
In summary, 4-hydroxy-2,7-naphthalene disulfonic acid has important value in many fields such as dyes, medicine and materials, and plays an important role in promoting the development of related industries.

What are the physical properties of 4-Hydroxy-2, 7-Naphthalenedisulfonic Acid?

4-Hydroxy-2,7-naphthalene disulfonic acid, this is an organic compound. Its physical properties are unique, let me talk about them one by one.
Looking at its appearance, it is often in the state of white to light yellow crystalline powder, which is very important for identifying this substance.
In terms of solubility, it has good solubility in water. Water is a common solvent, and this property makes 4-hydroxy-2,7-naphthalene disulfonic acid more convenient to participate in many chemical reactions or industrial processes using water as a medium. Because it can be evenly dispersed in water, it is conducive to the full progress of the reaction.
As for the melting point, it is about a specific temperature range, but the exact value may vary slightly due to factors such as measurement conditions. Melting point is one of the important physical constants of a substance and can be used to identify its purity. If the purity of the substance is high, the melting point range is relatively narrow; if it contains impurities, the melting point may be offset and the melting range becomes wider.
In addition, the density of 4-hydroxy-2,7-naphthalene disulfonic acid is also one of its physical properties. Although the specific value needs to be accurately measured, its density characteristics affect the sedimentation and dispersion behavior of the substance in different media. In practical application scenarios such as chemical production, density data can help to design appropriate processes and equipment to ensure that the substance can be handled and used in the expected way.
In summary, the physical properties of 4-hydroxy-2,7-naphthalene disulfonic acid, such as appearance, solubility, melting point, and density, are of critical significance for its applications in chemical, industrial, and other fields.

Is 4-Hydroxy-2, 7-Naphthalenedisulfonic Acid chemically stable?

The chemical stability of 4-hydroxy-2,7-naphthalene disulfonic acid is a matter that needs to be studied in detail.
Looking at this compound, its structure contains hydroxyl and sulfonic acid groups. The hydroxyl group has certain activity and can participate in many reactions, such as esterification reaction, and can interact with acid anhydride or acid chloride to form corresponding esters. And hydroxyl hydrogen is acidic, although the acidity is weak, in a strong alkali environment, it may dissociate hydrogen ions and form salts with alkali metal ions. The sulfonic acid group is a strong acidic group, which makes the compound easy to dissociate in water and is acidic, and can quickly react with alkali substances to form salts. This sulfonic acid group also gives the compound good water solubility, because its strong polarity can form hydrogen bonds with water molecules.
However, its stability is also affected by environmental factors. Under high temperature conditions, the energy of the chemical bonds in the molecule increases, or the bonds are broken, triggering decomposition reactions. In case of strong oxidizing agents, hydroxyl or sulfonic acid groups may be oxidized, causing structural changes. In different pH solutions, the degree of ionization varies, which may affect its chemical stability.
In summary, the chemical properties of 4-hydroxy-2,7-naphthalene disulfonic acid not only have certain reactivity due to the characteristics of the groups in the structure, but also change their stability due to different environmental conditions. The strength of its stability cannot be generalized, and it needs to be judged according to the specific situation.

What is the production process of 4-Hydroxy-2, 7-Naphthalenedisulfonic Acid?

The production process of 4-hydroxy-2,7-naphthalene disulfonic acid is a complex and delicate process, which contains many key steps and techniques.
At the beginning, suitable raw materials need to be selected. Usually naphthalene is used as the root material. Due to its structural characteristics, the required functional groups can be derived in the subsequent reaction. Naphthalene can only be introduced into the sulfonic acid group after the sulfonation reaction. This sulfonation reaction requires careful control of the reaction conditions. The temperature has a great impact on the reaction process. If the temperature is too high, it may cause a cluster of side reactions and the product is impure. If the temperature is too low, the reaction will be slow and take a long time. In general, the reaction temperature is controlled in a specific range, about a suitable temperature range, so that the reaction can proceed smoothly. At the same time, the selection and dosage of the sulfonating agent is also very important. Common concentrated sulfuric acid or fuming sulfuric acid, etc., are precisely allocated according to the reaction requirements to ensure that the sulfonic acid groups are connected to the naphthalene ring according to the expected number and position.
After the sulfonic acid group is successfully introduced to generate the naphthalene derivative containing the sulfonic acid group, it enters the hydroxylation stage. This step aims to introduce hydroxyl groups at specific positions in the naphthalene ring. The hydroxylation reaction often relies on specific reagents and catalysts, and a suitable reaction environment needs to be created. The catalyst can effectively reduce the activation energy of the reaction, speed up the reaction rate, and make the hydroxyl groups fall precisely at the The reaction environment such as pH, reaction time and other factors need to be carefully controlled. If the pH is slightly deviated, or the reaction direction is deviated, the target product cannot be obtained; if the reaction time is insufficient, the hydroxylation is incomplete; if the time is too long, it may cause an overreaction and destroy the molecular structure.
After the two key steps of sulfonation and hydroxylation, the product still needs to undergo a detailed separation and purification process. This process may use a variety of separation methods, such as crystallization, extraction, chromatographic separation, etc. Crystallization method can achieve preliminary separation according to the difference in solubility of the product and impurities in different solvents; extraction can utilize the difference in the partition coefficients of the target product in the two-phase solvent that is incompatible with each other to further enrich the product; chromatographic separation technology relies on the difference in the partition coefficients of each component between the stationary phase and the mobile phase to achieve a highly accurate separation effect, so as to obtain high-purity 4-hydroxy-2,7-naphthalene disulfonic acid.
The entire production process is like a delicate chemical symphony, each step is closely interlocked, and any slight error in any link may affect the quality and yield of the product. Only by carefully crafting each step can we successfully produce high-quality 4-hydroxy-2,7-naphthalene disulfonic acid.

What is the price range of 4-Hydroxy-2,7-Naphthalenedisulfonic Acid in the market?

The price of 4-hydroxy-2,7-naphthalene disulfonic acid in the market often varies for various reasons. The price involved is related to the source of production, quality, supply and demand.
Looking at the past market conditions, if you buy from ordinary merchants and the dosage is not huge, the price may range from tens to hundreds of yuan per kilogram. However, if the quality is pure, it is suitable for high-end chemical industry and scientific research, and the price should be higher, or more than 1,000 yuan per kilogram.
If the dosage is large, negotiate directly with the manufacturer and buy it in bulk, and the price may be reduced. And in different places, due to the difference in transportation and taxation, the price is also different.
Furthermore, the supply and demand of the market also affect the price. If the supply exceeds the demand, the price may decline; if the demand exceeds the supply, the price will rise. In order to know the exact price, you must carefully consider the current market conditions and negotiate with various suppliers to obtain a close value.