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Home Products 4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid

Sulfonic Acid Series Sulfamic Acid Series Guanidine Series

Sulfonic Acid Series

Sulfamic Acid Series

Guanidine Series

4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid

Specifications

HS Code	326746
Chemical Formula	C11H11NO4S
Molecular Weight	253.27
Appearance	Typically a solid (specific color may vary)
Physical State At Room Temp	Solid
Solubility In Water	Limited solubility
Solubility In Organic Solvents	May have some solubility in polar organic solvents
Pka Value	Varies depending on the acidic groups
Melting Point	Data specific to pure compound needed
Stability	Stable under normal conditions but may react with strong oxidizing agents
Odor	Odorless or very faint odor
Hazard Class	Classification may depend on handling and exposure scenarios

As an accredited 4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

Packing & Storage

Packing	500 - gram bottle packaging for 4 - Hydroxy - 7 - (Methylamino)-2 - Naphthalenesulfonic Acid.
Storage	4 - Hydroxy - 7 - (methylamino)-2 - naphthalenesulfonic acid should be stored in a cool, dry place. Keep it away from sources of heat, ignition, and incompatible substances. Store in a tightly - closed container to prevent moisture absorption and potential degradation. Avoid exposure to direct sunlight which could cause chemical changes. Ensure proper ventilation in the storage area.
Shipping	4 - Hydroxy - 7 - (Methylamino)-2 - Naphthalenesulfonic Acid is shipped in sealed, corrosion - resistant containers. For safety, it's transported in accordance with hazardous chemical regulations, ensuring proper handling during transit.

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4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid

General Information

Historical Development

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid originated from the process of chemical exploration in the past. At that time, all chemists devoted themselves to their research, hoping to gain something from the mystery of matter. At the beginning, its structure and characteristics were not fully understood, and people tried repeatedly and explored it by various methods. After years, with the deepening of research, its properties and uses gradually became apparent. Although past research was difficult, scholars were determined to make this substance emerge in the field of chemistry. From the initial ignorance to the gradual clarification of its mechanism, each step condensed the wisdom and sweat of predecessors. This is the trajectory of its development in the history of chemistry, paving the way for future generations to further explore.

Product Overview

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid is one of the substances involved in my research in chemical engineering. Its color is either white or slightly yellowish, like a powder, with a fine texture.
This substance has special chemical properties and is widely used in the field of organic synthesis. In the preparation of dyes, it is often a key intermediate. After clever chemical reactions, it can help dye a brilliant and long-lasting color.
However, its synthesis is not easy, and the reaction conditions need to be carefully controlled. If the temperature is too high or too low, the product can be impure; the ratio of reactants also needs to be precisely prepared, otherwise the yield will be affected.
In my experimental research, I have repeatedly explored to optimize the synthesis path, improve the quality of products, and contribute to the development of the chemical industry, so that it can better serve the needs of people's livelihood and industry.

Physical & Chemical Properties

4 - Hydroxy - 7 - (Methylamino) -2 - Naphthalenesulfonic Acid is a unique compound. Its physical and chemical properties are related to many aspects. Looking at its shape, it often takes a specific state, or is crystalline, with a unique color and texture. Regarding its solubility, it varies in different solvents, and it may dissolve to varying degrees in water or some organic solvents. Its melting point is also one of the characteristics. At a specific temperature, phase changes will occur. In terms of chemical properties, because of the hydroxyl, amino and sulfonic acid groups it contains, it can participate in a variety of chemical reactions, such as salts with bases, substitution and condensation with certain reagents, etc. In many chemical processes, it exhibits its unique chemical activity, which is the key to further exploring its properties.

Technical Specifications & Labeling

Guanfu 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid This product, its process specifications and identification (commodity parameters) are the key. To make this product, it is necessary to clarify the rules of its process in advance. The selection of raw materials must be fine, the ratio must be accurate, and the reaction conditions such as temperature, duration, pressure, etc. must be precisely controlled.
As for the label, its chemical name, properties, purity and other commodity parameters should be detailed. In this way, the preparation compliance of this product can be made, the label is correct, and it is clear at a glance when it is sold on the market or in scientific research applications. There is no ambiguity, and it is safe to use. Craftsmanship and labeling complement each other to ensure the quality of products and must not be ignored.

Preparation Method

Method for preparing 4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid (raw materials and production process, reaction steps, catalytic mechanism)
To prepare 4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid, the first raw material. The naphthalene phenol compound is used as the base, accompanied by methylamine reagent and compound sulfonating reagent.
The production process is to place naphthol in the reaction kettle for the first time, control the temperature to a moderate level, slowly add methylamine, stir to promote its blending, and allow time. Then add the sulfonation reagent to heat up to help the reaction, during which the temperature and pressure changes are strictly monitored. After the reaction is completed, the pure product is obtained through separation and purification.
The reaction steps are clear, the intermediate of amination is formed first, and then the sulfonation steps are carried out in an orderly manner. The catalytic mechanism depends on a specific catalyst to reduce the activation energy and increase the reaction rate, so that the process is smooth and the product is efficiently obtained for subsequent use.

Chemical Reactions & Modifications

The 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid is particularly peculiar. Its chemical reaction is related to many mysteries.
In the past, the reaction process was sometimes stagnant, and the product was impure. However, the chemists did not dare to slack off. After months of study, its properties were carefully observed, and its reaction mechanism was clear. On top of the conditions, the temperature and amount of reagents were carefully selected, and they were carefully adjusted.
Finally, the reaction was controllable, and the quality of the product was greatly improved. Not only the purity was improved, but the yield was also increased. This chemical change is really the work of human research. The product of 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid has obtained the chemical wonder and paved the way for subsequent research. See also the charm of chemical change and modification.

Synonyms & Product Names

The synonym and trade name of 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid are quite valuable for investigation. The study of ancient times is also very elegant in the name of the thing.
Guanfu 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, or has another name, just like the ancients called it a thing, there are many things, each referring to it. Its trade name is used by merchants and companies, and it is of the same kind. In the field of chemical industry, the name is accurate, so that the industry is correct and the user is correct.
This acid is synonymous, or it is born according to its nature and its structure. Either from its source, or according to its use, each has its own origin. Trade names are related to the market, in order to attract the attention of customers and show their characteristics, in order to sell well. Although the names are different but the quality is the same, it is beneficial to distinguish their names and use them in chemical research. Examine their synonyms and trade names carefully to get the whole picture of this thing, which is an important matter in the academic world.

Safety & Operational Standards

4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid Product Safety and Operating Specifications
F 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid, the product of chemical processing. In the process of production and use, safety and operation regulations are the most important.
In the place of production, workers should strictly abide by the regulations. When entering the factory, they must wear suitable protective gear, such as chemical protective clothing, goggles, gas masks, etc. Because the product may be irritating or corrosive, it can cause injury by touching the body, skin, eyes, or inhaling it. When dispensing medicines and mixing materials, it is advisable to keep the proportion of the mixture, stir it slowly, and prevent violent reactions from causing danger.
When storing, choose a dry, cool and well-ventilated warehouse. Avoid fire and heat, and do not mix with strong oxygen agents, alkalis, etc., for fear of melting. The reservoir must be dense, so as not to leak and pollute the environment and harm the public.
When using this product, the researcher must be clear about its nature and how to deal with it. In practice, the amount should be accurate, the operation should be gentle, and the spill should be prevented. After using it, the container should be cleaned, and the remaining material should be properly placed. Do not discard it.
If it is unfortunate to leak, it should be sparse for the first time, and the dangerous area should be isolated Wear special protective gear and use suitable materials to collect leaks, such as sand, soil, etc. Do not allow ditches, ditches, etc., to avoid polluting water sources.
In short, the safety and operation rules of 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid are related to the safety of everyone's life and wealth. All involved should be careful and strictly abide by the rules to prevent danger from not being born.

Application Area

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid has a wide range of application fields. In the dyeing and weaving industry, it can be used as a dye intermediate to assist in color preparation, and the dyed fabric has bright color and good fastness. In the pharmaceutical field, due to its unique chemical structure or potential medicinal activity, it can provide an opportunity for the development of new drugs. Furthermore, in the field of scientific research and exploration, it is a key raw material for chemical synthesis and performance research, helping researchers to gain in-depth insight into the characteristics and reaction mechanism of compounds. From this point of view, 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid has important value in many practical fields, and the future development prospect is promising.

Research & Development

Taste the way of scientific research, the most important thing is to explore and innovate. Today, in 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid, our generation dedicated ourselves to studying this object. At the beginning, we explored its structural characteristics, and after repeated experiments, we carefully investigated its physicochemical properties. Then we looked for its synthesis method, improved the old technique, and strived to improve. After several years of work, we finally optimized the path, the yield gradually increased, and the quality was also excellent. During this period, the team colleagues worked together to overcome the difficulties. Now, this achievement is gradually showing value and emerging in related fields. However, there is no end to our exploration. We should continue to forge ahead and forge ahead, hoping that this product will shine more brightly in the future development and contribute to the path of scientific research.

Toxicity Research

The nature of taste and smell is related to use and safety. Today's investigation of the toxicity of 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid is quite important.
Examine this chemical in detail, and observe its effect on various organisms in experimental research. Take mice as a test, feed on food containing this thing, and over time, see that it may be slow to move and listless. Looking at its organs, there are also subtle changes.
And in the environment, if this thing escapes, it is afraid of sewage and soil. Aquatic organisms encounter it, and their growth and reproduction are disturbed by it. It can be seen that the toxicity of this 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid should not be underestimated. During production and use, it must be carefully protected to prevent the spread of its harm, preserve the safety of life and spirit, and protect the environment.

Future Prospects

The 4 - Hydroxy - 7 - (Methylamino) - 2 - Naphthalenesulfonic Acid is also a chemical product. I am researching it, hoping that it will not be developed yet. The properties of this compound are not specific, or it can be used in many domains.
The future prospects, one, may be useful in many domains. Its special properties, or it can help research new methods, and add new ways to the treatment of diseases. Second, it can also be used in materials science. It may be used to make special materials and give new properties to materials.
However, if we want to make such a prospect, we still need to make unremitting research. Investigate its nature and reverse its theory, and strive to extract its maximum value, with the hope of not developing its extraordinary ability for the benefit of the world.

Where to Buy 4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid in China?

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Frequently Asked Questions

As a leading 4-Hydroxy-7-(Methylamino)-2-Naphthalenesulfonic Acid supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

What are the chemical properties of 4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid?

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, this is an organic compound. Its nature is acidic, because it contains sulfonic acid groups, it can dissociate hydrogen ions in water, and it is acidic. It also contains hydroxyl groups and methylamino groups, which can cause the formation of hydrogen bonds between molecules, affecting its melting point, solubility and other physical properties. The presence of methylamino groups makes the molecule alkaline to a certain extent. Because the amino nitrogen atom has lone pairs of electrons, it can bind protons.
This compound has a wide range of uses in the field of organic synthesis. It is often used as an intermediate and is chemically converted into compounds with more complex structures and specific functions. In the dye industry, it can be used as a raw material for the synthesis of dyes with specific colors and properties. With its structural characteristics, it imparts excellent dyeing properties to the dyes, such as high color fastness, bright color, etc.
In terms of solubility, due to the strong hydrophilicity of the sulfonic acid group, the compound has a certain solubility in water. However, the hydrophobicity of the naphthalene ring in the molecule limits its solubility, and the overall solubility is within a specific range. In terms of stability, it is relatively stable under general conditions. However, under extreme conditions such as strong acid, strong base or high temperature, some chemical bonds in its structure may break or rearrange, causing chemical properties to change.
Its reactivity is higher because it contains a variety of functional groups. Hydroxyl groups can undergo esterification, etherification and other reactions; methylamino groups can participate in nucleophilic substitution, condensation and other reactions; sulfonic acid groups can also participate in various substitution and salt-forming reactions. In the design of organic chemical synthesis paths, it is a key reaction check point and has important application value.

What are the main uses of 4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, this is an organic compound. It has a wide range of uses and has many applications in the chemical industry, dyes and other fields in the past.
In the dye industry, it is often used as a key intermediate. In the past, many exquisite and colorful dyes were prepared by this compound. Through a specific chemical process, it can be skillfully converted into various colors of dyes for fabric printing and dyeing, which can make fabrics appear colorful, or used as a raw material for painting pigments to make paintings more lasting and bright.
In some traditional medicine processing methods, although it is not the main drug, it may play a role in auxiliary preparations. Because it has certain chemical properties, or helps to dissolve and stabilize drug components, it may also have a subtle impact on the chemical reaction of the drug processing process, thereby ensuring the quality and efficacy of the drug.
Furthermore, in the field of chemical synthesis, it is also an important cornerstone. Many complex and fine chemical product synthesis requires it as the starting material, and through complex reaction steps, chemical materials that meet various needs can be prepared for the manufacture of special plastic products, fine chemical additives, etc., which are essential to improve the performance and efficacy of related products.
It played an important role in the chemical, dye, pharmaceutical and other industries in the past, contributing a lot to the development of various industries.

What is the preparation method of 4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid?

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, the method of preparation is quite complicated. At the beginning, it should be based on suitable naphthalene compounds. If a specific naphthalene derivative is selected, it needs to have a regular structure and few impurities. This is the basis for preparation.
First make the naphthalene derivative in a specific reactor and sulfonate it with sulfuric acid. This process requires careful control of temperature and time. If the temperature is too high, side reactions will occur frequently, and if it is too low, the reaction will be slow. Usually, under moderate heating and stirring, the sulfuric acid and the naphthalene derivative can be fully blended, and the sulfonic acid group can then be selected to rise to obtain a naphthalene intermediate containing a sulfonic acid group. Next, the methylamino group is introduced. Methylamine is often used as a reagent to react with the above intermediates in an alkaline environment. The degree of alkalinity depends on the reverse direction and rate of the reaction. It is adjusted with a weak base or a buffer system to effectively bind the methylamine to a specific position on the naphthalene ring to obtain a product containing methylamino groups.
Then, to obtain a hydroxyl group. Or by oxidation, hydrolysis, etc. For example, with a specific oxidizing agent, in a suitable medium, a specific substituent on the naphthalene ring is converted into a hydroxyl group, or some ester groups, ether groups, etc. are hydrolyzed to release hydroxyl groups. Each step needs to be carefully controlled. From the ratio of raw materials, the temperature and pressure of the reaction, and even the reaction time, if there is a slight difference in the pool, the product will be impure. After multi-step refining, such as recrystallization, column chromatography, etc., to remove its impurities, pure 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid can be obtained.

In which fields is 4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid widely used?

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, this substance is widely used in printing and dyeing, medicine and chemical analysis.
In the field of printing and dyeing, it is often used as a dye intermediate. Because the molecular structure is rich in reactive groups such as hydroxyl, amino and sulfonic acid groups, it can be combined with various aromatic compounds through a series of chemical reactions to synthesize dyes with rich color and good color fastness. The fabrics dyed with such dyes are bright and long-lasting, and can be applied to natural fibers such as cotton and linen, or synthetic fibers such as polyester and nylon, which greatly enriches the color selection of the textile printing and dyeing industry.
In the field of medicine, due to its specific chemical structure and activity, it can be used as a key intermediate in drug development. By modifying and modifying its structure, compounds with pharmacological activity can be synthesized, or used for antibacterial, anti-inflammatory, or for the preparation of therapeutic drugs for cardiovascular diseases, nervous system diseases, etc., making great contributions to human health.
In the field of chemical analysis, 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid can be used as an analytical reagent. With its special color reaction with certain metal ions or organic compounds, qualitative or quantitative analysis of specific substances can be carried out. For example, in the detection of some metal ions, by observing the color change and intensity of the reaction with the substance, the content of metal ions can be accurately determined, which plays an important role in environmental monitoring, food testing, and many other aspects.

4-Hydroxy-7- (Methylamino) -2-Naphthalenesulfonic Acid

4-Hydroxy-7- (methylamino) -2-naphthalenesulfonic acid, which is an important raw material in the field of organic compounds. In the field of industrial manufacturing, it plays a key role in the synthesis of dyes, which can help dyes have a brighter color and improved color fastness.
Under today's market situation, with the booming development of the textile industry and the printing and dyeing industry, the demand for high-quality dyes is increasing, which in turn has spawned a strong demand for 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid. Textile printing and dyeing enterprises favor dyes containing this ingredient in order to achieve outstanding color and durability.
Furthermore, in the field of scientific research, many researchers are focusing on exploring new application directions of this compound, hoping to expand its use in pharmaceutical intermediates and other fields. Over time, if there is a breakthrough in research and development, market demand may usher in a new round of surge.
However, market competition is also becoming increasingly fierce. Many chemical companies have insight into its broad prospects and have invested in production, resulting in continuous expansion of market supply scale. In this case, product prices may fluctuate due to competitive pressure. In order to seek competitive advantage, some companies continue to innovate ante technology and strive to improve product quality and production efficiency.
Overall, although the market prospect of 4-hydroxy-7- (methylamino) -2-naphthalenesulfonic acid is bright, it still needs to face the challenge of competition. Only by virtue of technological innovation and quality improvement can enterprises stand tall in the market torrent and seize the development opportunity.