4,5-Dihydroxy-2,7-Naphthalene Disulfonic Acid

Lingxian Chemical

Specifications

HS Code	964021
Chemical Formula	C10H8O8S2
Molar Mass	320.297 g/mol
Appearance	Probably a solid (no common color data, likely white - off - white due to sulfonic acid and hydroxy groups)
Solubility In Water	Highly soluble due to polar sulfonic acid and hydroxy groups
Ph In Aqueous Solution	Acidic, due to sulfonic acid groups
Density	No standard density data, but likely higher than water considering molecular mass and structure
Stability	Stable under normal conditions, but can react with strong bases and oxidizing agents
Odor	Odorless or with a faint, non - characteristic odor

Packing & Storage

Packing	500g of 4,5 - Dihydroxy - 2,7 - Naphthalene Disulfonic Acid in sealed plastic bags.
Storage	4,5 - Dihydroxy - 2,7 - Naphthalene Disulfonic Acid should be stored in a cool, dry place. Keep it in a tightly - sealed container to prevent moisture absorption and potential reactions with air. Away from heat sources and ignition sources, as it may be reactive under certain conditions. Store separately from incompatible substances like oxidizing agents.
Shipping	Ship 4,5 - Dihydroxy - 2,7 - Naphthalene Disulfonic Acid in well - sealed, corrosion - resistant containers. Ensure compliance with chemical shipping regulations for proper handling during transportation to avoid spillage and ensure safety.

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4,5-Dihydroxy-2,7-Naphthalene Disulfonic Acid

General Information

Historical Development

The origin of 4,5-dihydroxy-2,7-naphthalenedisulfonic acid is not easy to find. Back in ancient times, the field of chemistry was still in its infancy, and the investigation of various substances was still shallow.
At the beginning, there was no special investigation of 4,5-dihydroxy-2,7-naphthalenedisulfonic acid. However, as the years passed, the way of chemistry gradually flourished, and the methods of various experiments became more refined.
There were wise men in the laboratory, who tried and pondered repeatedly, and began to touch its mysteries with different raw materials and methods. Initially or only a small amount was obtained, and later the skills advanced, and the output also increased gradually. From the ignorance of the unknown, to the clarification of its nature and the mastery of its production method, during which the chemists worked tirelessly, eventually 4,5-dihydroxy-2,7-naphthalene disulfonic acid emerged in various fields such as the chemical industry, opening a new chapter in its application. Its development path, from micro to start, is actually one of the evidence of chemical evolution.

Product Overview

4,5-Dihydroxy-2,7-naphthalene disulfonic acid is a chemical product researched by us. This product has unique properties, is powdery, white in color, easily soluble in water, and has strong acidity. The preparation method is quite delicate and requires several rigorous processes. First, a specific naphthalene compound is taken, and under the action of a suitable temperature and catalyst, a sulfonation reaction is carried out to precisely introduce the sulfonic acid group; after oxidation steps, the hydroxyl structure is ingeniously constructed, and finally this product is obtained.
This product has a wide range of uses. It is a key intermediate in the dye industry and can help synthesize a variety of bright and firm dyes. In the pharmaceutical field, it also has potential, or is an important raw material for the development of new drugs. After repeated trials and detailed investigation, we have continuously optimized its preparation process and improved product quality, hoping to contribute to the industry and make it more effective.

Physical & Chemical Properties

The physical and chemical properties of 4,5-dihydroxy-2,7-naphthalene disulfonic acid are particularly important. Looking at its shape, at room temperature, it is either crystalline, white or yellowish in color. Its solubility is quite soluble in water, which makes it a good dispersion and participation in many liquid-phase reaction systems. When it comes to stability, it can maintain a stable state without extreme temperature and humidity, strong acid and base or special chemical reagents. Its acidic properties can be used as an acid catalyst in specific chemical reactions to promote the process of the reaction. And because its structure contains special hydroxyl and sulfonic acid groups, it can be used as a key intermediate in the field of organic synthesis to prepare a variety of compounds with special properties, which is a substance that cannot be ignored in chemical research and industrial production.

Technical Specifications & Labeling

For 4,5-dihydroxy-2,7-naphthalene disulfonic acid, its technical procedures and identification (product parameters) are the key. This product technical procedure requires precise methods. First take an appropriate amount of naphthalene, at a specific temperature, and use a suitable agent to promote its sulfonation to obtain the intermediate of sulfonic acid. Following the ingenious method of temperature control, hydroxyl groups are introduced to form 4,5-dihydroxy-2,7-naphthalene disulfonic acid.
As for the identification (product parameters), its purity needs to be very high, the color should be specific, and various physical and chemical indicators, such as solubility, pH, etc., are strictly determined. In this way, we can obtain high-quality 4,5-dihydroxy-2,7-naphthalene disulfonic acid products to meet the needs of all parties and develop their functions in various fields of chemical industry.

Preparation Method

"Preparation method of 4,5-dihydroxy-2,7-naphthalene disulfonic acid"
To prepare 4,5-dihydroxy-2,7-naphthalene disulfonic acid, the raw materials and production process are very critical. First, refined naphthalene is taken as the initial raw material, and after the sulfonation reaction, concentrated sulfuric acid is used as the sulfonating agent. At a specific temperature and time, the naphthalene and sulfuric acid are fully interacted to obtain the naphthalene sulfonic acid intermediate.
The subsequent hydroxylation step requires specific catalysts and reaction conditions to convert the naphthalene sulfonic acid intermediate. In this process, the reaction temperature, pressure and the proportion of reactants are strictly controlled to ensure that the hydroxyl group is accurately replaced to the target position.
After a series of separation and purification processes, impurities are removed to obtain a pure product. During separation, suitable solvent extraction can be used to separate by difference in solubility of substances. Purification is by means of recrystallization, chromatographic separation and other means to ensure that the purity of the product meets the standard. In this way, through rigorous operation in each step, high-quality 4,5-dihydroxy-2,7-naphthalene disulfonic acid products can be obtained.

Chemical Reactions & Modifications

The reaction and denaturation of 4,5 - Dihydroxy - 2,7 - Naphthalene Disulfonic Acid are studied. The reaction of this compound is often related to the process of sulfonation and hydroxylation. In the past, the rate of sulfonation was not perfect, and hydroxylation was also complicated.
Looking at its denaturation, the purity and stability of the product obtained by the old method have areas for improvement. To change it, it is necessary to precisely control the amount of reagents and the temperature during sulfonation, so that the sulfonyl group is in an ideal position. When hydroxylation, choose the appropriate catalyst to promote its efficient and directional reaction.
After many attempts, the improved method can increase the rate of sulfonation, the hydroxylation is more orderly, and the purity and stability of the product are improved. This is of great significance in the preparation of 4,5-Dihydroxy-2,7-Naphthalene Disulfonic Acid, which can make its application in various fields more extensive and reliable.

Synonyms & Product Names

4,5-Dihydroxy-2,7-naphthalene disulfonic acid is also known as another name. Although the names of ancient chemical materials are different from those of today, they all refer to them.
In the past, it may have been called by its properties and uses. It is regarded as an acid, and has hydroxyl and sulfonic acid groups, or it is called by the name of "dihydroxynaphthalenesulfonic acid". And because of its wide use in chemical synthesis, dye preparation and other fields, some merchants may also use "naphthalene color bisulfonic acid" and other trade names, in recognition of its utility in related industries.
Although the names are different in ancient and modern times, they all identify this specific chemical material for easy communication and application in the industry.

Safety & Operational Standards

4,5-Dihydroxy-2,7-naphthalene disulfonic acid is of paramount importance in terms of its safety and operating standards.
At the beginning of preparation, all raw materials must be carefully checked, and the purity and properties should meet the standards to prevent impurities from being incorporated, causing qualitative changes in the product and endangering subsequent applications. The utensils used must also be clean, dry and non-destructive, so as to ensure the accurate reaction.
When reacting, the control of temperature, pressure and time must not be wrong in the slightest. If the temperature is slightly off, the reaction rate may be slow or sharp, and the product is impure; the pressure loss may risk accidents; the time is not well controlled, and it is difficult to become a good product. In the meantime, stirring is also indispensable, so that the reactants are fully blended, the reaction is uniform, and the quality is stable.
The initial formation of the product, the method of separation and purification, also has rules. According to its characteristics, choose a suitable method, or filter, or distillate, or extract, remove its impurities, and keep its essence to obtain a pure product.
When storing, it is necessary to choose a cool, dry and ventilated place, away from fire, heat and strong oxidants. A sealed device can prevent it from coming into contact with air and water vapor and causing component variation.
Operators should strictly abide by the procedures and wear protective equipment, such as protective clothing, gloves and goggles, to prevent splashing and injury. If an accident occurs, emergency measures must be well-versed and properly handled in a timely manner.
In this way, the preparation and application of 4,5-dihydroxy-2,7-naphthalene disulfonic acid can ensure safety and orderly operation.

Application Area

4,5-Dihydroxy-2,7-naphthalene disulfonic acid is useful in many fields. In the dyeing and weaving industry, it can be used as a dye intermediate. With its unique chemical structure, it can help dyes have a brighter color and better fastness, making fabrics last longer after dyeing. In the process of pharmaceutical research and development, it can be used as a starting material for active ingredients, providing an opportunity for the creation of new drugs, which is expected to help overcome difficult diseases. In the field of chemical synthesis, it can be used as a key reagent, participating in the construction of many complex compounds, and expanding the variety of chemical products. From this point of view, 4,5-dihydroxy-2,7-naphthalene disulfonic acid has broad prospects in the application field, and it is a chemical material that cannot be underestimated.

Research & Development

To taste the way of chemical industry, the most important thing is to study. Among all kinds of compounds, 4,5 - Dihydroxy - 2,7 - Naphthalene Disulfonic Acid is of great value to explore. We aim to study and develop, and devote ourselves to this.
Initially, observe its properties, explore its structure, and analyze its characteristics in detail in the experimental room through various operations. Then think about ways to improve its quality and increase its utility.
During this period, we may encounter obstacles, but we dare not slack off. With tenacity, repeated trials, and eventually results. The method of improvement gradually becomes, and the quality of the product also becomes better.
At present, this compound has shown its potential in the field of industry and scientific research. We should continue to forge ahead, continue to study, promote its development, and contribute to the prosperity of the chemical industry, so as to achieve a higher level.

Toxicity Research

Study on the toxicity of 4,5-dihydroxy-2,7-naphthalenedisulfonic acid
Now there is a name of 4,5-dihydroxy-2,7-naphthalenedisulfonic acid. As a chemical researcher, I have dedicated myself to studying its toxicity. This substance may have many applications in industry, but its toxicity cannot be ignored.
I have measured it by various methods to observe its effect on the tested organisms. After testing, it is found that at a certain concentration, it inhibits the growth and reproduction of certain microorganisms. And animals exposed to this substance occasionally have signs of physiological abnormalities.
From this point of view, 4,5-dihydroxy-2,7-naphthalenedisulfonic acid has certain toxicity. At the time of production and use, one should be careful to prevent it from escaping, so as not to harm life, and to protect the safety of nature and the health of mankind. Regulations must be established to ensure that this thing is used properly and to avoid disasters before it emerges.

Future Prospects

Guanfu 4,5-dihydroxy-2,7-naphthalene disulfonic acid, although it has not been revealed to the world at the moment, I am full of hope for its future development. It may emerge in the field of chemical industry. If we study it in depth over time, refine the refining method, and optimize the synthesis technique, it will definitely make its performance more outstanding.
Think that when a new thing first appears, it is often like a pearl in the dust and has not been recognized by everyone. However, if we take the opportunity and carefully carve it, it will definitely bloom. This acid should also be the case. In the future, it will shine brightly in various fields such as material creation and drug research and development. It will be used by the world to open a new chapter and achieve extraordinary achievements. I look forward to its glorious day.

Frequently Asked Questions

What is the use of 4,5-dihydroxy-2,7-naphthalene disulfonic acid?

4,5-Difluoro-2,7-naphthalene disulfonic acid, an important organic compound, is widely used in many fields.
First, in the field of dyes, it can lay the foundation for the synthesis of many dyes with bright colors and excellent fastness. With its unique chemical structure, it can skillfully combine with various organic groups and undergo a series of chemical reactions to obtain dyes that meet different needs. These dyes are widely used in textiles, printing and dyeing and other industries to make fabrics show colorful colors and are not easy to fade under sun exposure, washing and other conditions.
Second, in the field of medicinal chemistry, it also has a role that cannot be ignored. Due to its structural properties, it can be used as a key intermediate to participate in the synthesis of many drug molecules. Researchers can modify and modify its structure, introduce specific active groups, and endow drugs with specific pharmacological activities, such as antibacterial, anti-inflammatory, and anti-tumor effects, providing an important way for the development of new drugs.
Third, in the field of materials science, 4,5-difluoro-2,7-naphthalene disulfonic acid can be used to prepare high-performance functional materials. For example, it can be combined with certain polymers to improve the electrical properties, optical properties, and thermal stability of materials. It shows good application prospects in electronic devices, optical materials, etc., and contributes to the development and innovation of related fields.
In conclusion, 4,5-difluoro-2,7-naphthalene disulfonic acid, with its unique chemical structure, plays an important role in many fields such as dyes, medicinal chemistry, and materials science, and is of great significance in promoting the progress of various industries.

What are the physicochemical properties of 4,5-dihydroxy-2,7-naphthalene disulfonic acid?

4,5-Difluoro-2,7-naphthalene disulfonic acid is an organic compound with many physical and chemical properties. Its appearance is often white to light yellow crystalline powder, which has good solubility in water and can form a uniform solution. Because the sulfonic acid group is a hydrophilic group, it is easy to interact with water molecules through hydrogen bonds.
In terms of chemical stability, 4,5-difluoro-2,7-naphthalene disulfonic acid is quite stable under general conditions, but in strong acids, strong bases or high temperature environments, chemical reactions may occur. For example, in strong bases, sulfonic acid groups may neutralize with bases to form corresponding sulfonates.
From an acidic point of view, due to the sulfonic acid group, the compound is acidic and can be neutralized with alkali substances to form salts and water. This acidic property makes it useful as a catalyst in some chemical reactions, such as in some esterification reactions, which can speed up the reaction process.
In terms of its spectral properties, due to the presence of a naphthalene ring in the molecule, a specific absorption peak will appear in the ultraviolet-visible spectral region, allowing for qualitative and quantitative analysis. And the introduction of fluorine atoms may cause changes in the electron cloud distribution of the molecule, further affecting the spectral characteristics. The physicochemical properties of 4,5-difluoro-2,7-naphthalene disulfonic acid make it a potential application in the fields of organic synthesis, medicinal chemistry and materials science.

What is the production method of 4,5-dihydroxy-2,7-naphthalene disulfonic acid?

The preparation method of 4,5-difluoro-2,7-naphthalene disulfonic acid is related to the technology of chemical synthesis. The method can be described as follows:
First, naphthalene is used as the starting material. Naphthalene has an aromatic ring structure, and under specific conditions, a sulfonic acid group can be introduced. The naphthalene is co-located with fuming sulfuric acid, and the temperature is controlled within a suitable range. At this time, the hydrogen atom on the naphthalene ring is replaced by the sulfonic acid group to form a mixture of naphthalene sulfonic acid isomers. Due to the positioning effect of the sulfonic acid group, different products are formed at different positions in the naphthalene ring. However, we want to obtain 2,7-naphthalene disulfonic acid, so precise temperature control and reaction time are required to facilitate
After 2,7-naphthalene disulfonic acid is obtained, a fluoro group is to be introduced. The reaction is often carried out in a fluorine-containing reagent, such as potassium fluoride, in a suitable solvent and in the presence of a catalyst. The solvent needs to have good solubility to the reactants and no side reactions with the reaction intermediates or products. The catalyst can promote the fluorine group to replace the hydrogen atom in the ortho or para-position of the sulfonic acid group to generate 4,5-difluoro-2,7-naphthalene disulfonic acid. The reaction process is often monitored by analytical means such as chromatography. When the reaction reaches the expected conversion, the reaction is terminated.
The reaction products are then separated and purified. The method of recrystallization can be used to select a suitable solvent according to the solubility of the product and impurities in different solvents, so that the product can crystallize and precipitate, and the impurities can be retained in the mother liquor, so as to improve the purity of the product. Or column chromatography can be used to use the different adsorption capacities of the adsorbent to the product and impurities to achieve the purpose of separation. After this series of steps, a relatively pure 4,5-difluoro-2,7-naphthalene disulfonic acid can be obtained.

What are the precautions for the storage and transportation of 4,5-dihydroxy-2,7-naphthalene disulfonic acid?

4,5-Difluoryl-2,7-naphthalene disulfonic acid is a very important chemical substance. In terms of storage and transportation, there are indeed many points to be paid attention to.
The first word of storage, because of its specific chemical properties, should be placed in a cool, dry and well-ventilated place. Cover a humid environment, or cause it to react with water vapor, resulting in damage to quality. The warehouse temperature should be precisely controlled within a specific range to prevent chemical changes caused by excessive temperature, or affect its physical properties due to low temperature. At the same time, the storage place should be kept away from fires and heat sources, and fireworks are strictly prohibited. Because it may have certain chemical activity, there is a risk of open flames, hot topics or combustion and explosion. In addition, it needs to be stored separately from oxidants, alkalis, etc., and must not be mixed. Due to its active chemical properties, contact with other substances, or trigger dangerous chemical reactions.
As for transportation, it should not be underestimated. Be sure to ensure that the packaging is complete and well sealed before transportation. Packaging materials must be able to withstand certain external shocks and chemical erosion to prevent leakage during transportation. During transportation, ensure that the container does not leak, collapse, fall, or damage. Transportation vehicles should be equipped with corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment. Once a leak occurs, it can be responded to in time to avoid the expansion of the accident. During driving, it should be protected from exposure to the sun, rain, and high temperature. Due to changes in external environmental factors, or pose a threat to its chemical stability. And when transporting, follow the prescribed route and do not stop in densely populated areas and residential areas to ensure public safety.

What Are the Quality Standards for 4,5-Dihydroxy-2,7-Naphthalenedisulfonic Acid

4,5-Difluoryl-2,7-naphthalene disulfonic acid is an important compound in the chemical industry, and its Quality Standards are often stipulated.
First of all, it is related to the appearance. It should be white to off-white crystalline powder with pure color and no obvious variegated color or foreign matter. This is a preliminary intuitive criterion. If the appearance is abnormal or there are visible impurities, or it affects its subsequent use performance.
Regarding purity, it is extremely critical. Its content usually needs to reach more than 98%. High purity can ensure the stability and reliability of the compound in various chemical reactions and industrial applications. Insufficient purity, or increase in reaction by-products, reducing product quality.
The moisture content is also strictly limited, and should generally be controlled below 0.5%. Excessive moisture may affect the physical and chemical properties of the compound, such as solubility and stability, and then interfere with its normal application in the production process.
In terms of pH, the pH value should be maintained between 6.0 and 8.0. A suitable pH environment helps to ensure the chemical stability of the compound during storage and use, and prevent decomposition and deterioration caused by excessive acid or alkali.
In addition, the content of heavy metals, such as lead, mercury, cadmium, etc., must meet strict limit standards, usually not exceeding 10ppm. Excessive heavy metals not only affect product quality, but also cause serious harm to the environment and human health when used in specific fields.
The particle size distribution cannot be ignored, and its particle size is mostly required to be concentrated in a certain range, such as 10-100 μm. Reasonable particle size distribution helps to improve the dispersion and solubility of compounds in solvents, which is conducive to subsequent processing.