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Sulfonic Acid Series Sulfamic Acid Series Guanidine Series

Sulfonic Acid Series

Sulfamic Acid Series

Guanidine Series

Sodium 2-Naphthol-7-Sulfonate

Specifications

HS Code	902174
Chemical Formula	C10H7NaO4S
Molar Mass	246.21 g/mol
Appearance	White to off - white powder
Solubility In Water	Soluble
Ph Of Aqueous Solution	Neutral to slightly alkaline
Cas Number	135 - 55 - 7
Melting Point	Decomposes
Stability	Stable under normal conditions
Storage Conditions	Store in a cool, dry place

As an accredited Sodium 2-Naphthol-7-Sulfonate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

Packing & Storage

Packing	500g of Sodium 2 - Naphthol - 7 - Sulfonate packaged in a sealed plastic bag.
Storage	Sodium 2 - Naphthol - 7 - Sulfonate should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources and direct sunlight to prevent decomposition. Store in a tightly closed container to avoid moisture absorption and exposure to air, as any changes in its purity can impact its use in various chemical processes.
Shipping	Sodium 2 - Naphthol - 7 - Sulfonate is shipped in sealed, corrosion - resistant containers. Precautions are taken to avoid moisture and contamination. Transport follows chemical safety regulations for safe delivery.

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General Information

Historical Development

Sodium 2 - Naphthol - 7 - Sulfonate is also a chemical product. Tracing back to its origin, the chemists of the past have pursued unremitting research. At the beginning, I explored the mystery of organic synthesis, and after several years of grinding, I have achieved something. At that time, the experiment was difficult, and it was difficult to describe, and all kinds of materials and techniques needed to be repeatedly studied.
And the process is gradually refined, this product has emerged in the printing and dyeing industry. Its good properties can make the color firm and bright, which is important for the industry. Years have passed, technological innovation has not stopped, the preparation method has become more and more perfect, and the output has also increased. From its rare beginnings to its widespread use, it has witnessed the progress of chemical technology and left a profound impression on the path of industrial development, which can be described as a brilliant page in the history of chemistry.

Product Overview

Sodium 2-Naphthol-7-Sulfonate, is an important chemical product. Its shape or powder, white color. This product is widely used in the chemical industry.
The preparation method is often obtained by sulfonation of naphthol and neutralization with alkali. The reaction process requires strict temperature control and time control to ensure the purity and quality of the product.
Its stability is soluble in water. In the dye industry, it is a key intermediate for the synthesis of a variety of dyes, which can endow dyes with bright color and good fastness. In other chemical branches, it also has a unique role to help optimize product performance.
Today's industrial production is committed to improving its yield and purity to meet the increasing needs of the market. Adhering to the state of refinement, we expect this chemical to demonstrate its effectiveness in more fields.

Physical & Chemical Properties

Sodium 2 - Naphthol - 7 - Sulfonate is also a chemical substance. Its physical properties are white and powdery. It is easily soluble in water and has a specific melting effect. This is its physical property.
Its chemical properties are low, sulfonyl, and acidic. It can be formed in case of water, and it can also be reversed by the initiation of multiple substances. Its molecules are solid, but under special conditions, such as high temperature, acid or water, its chemical properties may be reduced.
This substance is used in engineering, such as in dyes, and can be used in dyes to help generate the color of dyes; it is also indispensable in some chemical processes. Therefore, the physicalization properties of Sodium 2 - Naphthol - 7 - Sulfonate determine its importance in many domains.

Technical Specifications & Labeling

The technical specification and identification (product parameters) of sodium 2-naphthol-7-sulfonate
Sodium 2-naphthol-7-sulfonate is an important product in the chemical industry. Its technical specifications, first in the fine selection of raw materials, must be pure and free of impurities, in order to lay the foundation for subsequent processes. The synthesis method requires control of temperature, duration and reagent ratio, with accurate accuracy. For example, in a reactor, the temperature should be stable in a certain range, so that the reaction is smooth and the product is pure.
As for the identification, the product parameters must be detailed. Looking at its color, it should be white or yellowish; measuring its purity, when it reaches a certain number of precision, impurities must not exceed the limit. And on the package, the name, chemical formula, purity, production date and other items must be clearly correct for inspection. In this way, we can ensure that the quality of this product is suitable for use.

Preparation Method

Preparation of Sodium 2-Naphthol-7-Sulfonate
To prepare Sodium 2-Naphthol-7-Sulfonate, the raw materials, production process, reaction steps and catalytic mechanism are very important.
The raw materials are selected, mainly 2-Naphthol and fuming sulfuric acid. Put 2-Naphthol into the reactor and slowly inject fuming sulfuric acid, which is the beginning of sulfonation. The reaction needs to be controlled at temperature, initially low temperature, and then gradually rise to a moderate level to make the sulfonation sufficient.
The reaction step is to form an intermediate first, and then hydrolyze and neutralize to obtain 2-Naphthol-7-Sulfonate. During hydrolysis, water is added to make the sulfonic acid group moderately hydrolyzed, and then neutralized with soda ash, and the pH is adjusted to neutral.
Catalytic mechanism, sulfuric acid is a sulfonation catalyst, which promotes the reaction to go fast. And at each step of the reaction, strict control of conditions is required to obtain high-purity products. This preparation method can be used in chemical production.

Chemical Reactions & Modifications

Sodium 2 - Naphthol - 7 - Sulfonate, in the field of chemistry, its chemical reaction and modification are quite critical. In the past, the method of preparing this product may have been complicated and the efficiency was not good. The reaction conditions are often harsh, resulting in huge energy consumption, and the yield is not ideal.
However, today is different from the past, through the research of many scholars, the optimization method has been found. Improve the reaction path and select a more suitable catalyst, so that the reaction conditions tend to be milder and the energy consumption is also reduced. At the same time, the purity and yield of the product have been significantly improved. This modification not only enhances the production efficiency of this chemical, but also makes it more advantageous in industrial applications, which can better meet the diverse needs, and contribute to the development of the chemical industry.

Synonyms & Product Names

Today there is a thing called Sodium 2 - Naphthol - 7 - Sulfonate. There are many aliases, all of which are different names for the same thing. In the industry, there are also various trade names, all of which refer to this thing.
This Sodium 2 - Naphthol - 7 - Sulfonate, in the field of chemical industry, has a wide range of uses. Because of its unique properties, it can be an important agent for many processes. The name of the same thing may be named according to its characteristics, or due to different production methods and uses. Trade names are mostly used by merchants to promote their products, in recognition of their characteristics and advantages.
Although the names are different, they all refer to the same thing. This is also a common phenomenon in the chemical industry. All kinds of synonyms are well known in the industry, and each name has its own use, either to facilitate academic communication or to facilitate commercial circulation. They complement each other and help this product play its role in the chemical industry.

Safety & Operational Standards

2-Naphthol-7-Sulfonate Sodium Product Safety and Operation Specifications
Sodium 2-Naphthol-7-Sulfonate is an important chemical product. Its production and use links, safety and standardized operation are practical and even necessary.
For storage, it is necessary to choose a dry, cool and well-ventilated place. Cover this product with moisture, if it is in a humid place, it is easy to cause quality deterioration. And it should be isolated from oxidants, acids, etc., to prevent dangerous chemical reactions.
When operating, operators must wear appropriate protective equipment. If you wear protective glasses, you can avoid its powder from entering your eyes and damaging your eyesight; wearing protective clothing can prevent it from coming into contact with your skin and prevent skin discomfort.
During the production process, it is crucial to precisely control the reaction conditions. A slight difference in parameters such as temperature and pressure may affect the quality of the product or even cause a safety accident. The stirring rate also needs to be moderate to ensure that the reaction is carried out evenly.
Furthermore, waste disposal should not be ignored. Waste residues and waste liquids containing this substance should not be disposed of at will. They should be properly disposed of in accordance with relevant environmental regulations to avoid polluting the environment.
During transportation, it is also necessary to ensure that the packaging is intact. Driving should be stable to avoid bumps and collisions, causing packaging to break and material leakage.
All of these are related to the safety and standardized operation of Sodium 2 - Naphthol - 7 - Sulfonate products. Practitioners should observe it carefully to ensure smooth production, environmental safety and personnel well-being.

Application Area

Sodium 2 - Naphthol - 7 - Sulfonate has a wide range of application fields. In the dyeing and weaving industry, it is often used as a dye intermediate. Because of its unique structure, it can participate in many dye synthesis reactions, and the color of the dye aid is bright and firm. After the fabric is dyed, it will last for a long time, and the color will not fade easily.
In the field of medicine and chemical industry, it also has its own influence. Its chemical properties may help the synthesis of drug ingredients and contribute to the research and development of medicine. Or participate in the construction of a specific drug molecular structure, which plays an indispensable role in the achievement of drug efficacy.
Furthermore, it also plays an important role in the manufacture of some fine chemical products. It can be used as a special additive to optimize product performance, such as improving product solubility, stability, etc., making the product more competitive in the market.

Research & Development

I devoted myself to the study of Sodium 2-Naphthol-7-Sulfonate. At the beginning, I explored its properties, and in various experiments, I carefully observed the signs of its reaction and studied the reason for its change.
At that time, many problems lay in front of me, and the purity of raw materials and the control of conditions were all about success or failure. However, I did not dare to slack off, studying day and night, and trying again and again.
Fortunately, thanks to unremitting efforts, I gradually gained something. Understand the law of its reaction in a specific environment, and understand the method of optimization. Then improve the process, the quality of the product gradually increased, and the quantity also increased.
Looking to the future, I hope to build on this and go to the next level. Expand the field of its application, play a greater role in industry and scientific research, and contribute to the development of the industry.

Toxicity Research

Sodium 2 - Naphthol - 7 - Sulfonate is also a chemical substance. In its toxicity study, it is very important. Examine this compound, its properties and uses, in order to determine its impact on the environment and biological effects.
In general, it can be known that it may have a certain toxicity. If you are not careful, or enter the biological environment, it may have adverse effects. In the environment, it may also be able to affect the balance of life.
However, more research is needed to clarify its toxicity. Use different biological images to observe its long-term and short-term reactions to explore its toxicity under different conditions. Seek to know, in order to prevent and utilize it, so that this chemical can be used for its own purposes, but also to avoid its harm, and to ensure the safety of living things in the environment.

Future Prospects

Sodium 2 - Naphthol - 7 - Sulfonate is also a product of chemistry. Looking at today's world, science and technology are changing day by day, this product has emerged in various fields, and the future is quite promising.
In industrial manufacturing, it may be the key to raw materials, helping to improve the quality of products. In scientific research and exploration, it is an important reagent, opening up the unknown. Although it is in the process of development now, it will definitely shine in the future.
As a chemical researcher, we observe its potential and believe that it will be like a new star, blooming in the unfinished process. With time and technological advancements, its application will surely become more extensive, benefiting the well-being of mankind and expanding the unknown frontier. This is our eagerness for its future development.

Where to Buy Sodium 2-Naphthol-7-Sulfonate in China?

As a trusted Sodium 2-Naphthol-7-Sulfonate manufacturer, we deliver: Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements. Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery. Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.

Frequently Asked Questions

As a leading Sodium 2-Naphthol-7-Sulfonate 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 Sodium 2 - Naphthol-7-Sulfonate

Sodium-2-Naphthol-7-Sulfonate, which is sodium 2-naphthol-7-sulfonate, is one of the organic compounds. The properties of this substance are mostly white to light gray powder, which is soluble in water.
In terms of its chemical properties, its molecule contains a sodium sulfonate group (-SO
Na) and a naphthol structure. The sodium sulfonate group gives it a certain hydrophilicity, which makes the compound better soluble in water and forms a uniform solution. This property is crucial in many industrial processes, such as the manufacture of dyes and pigments, and can help it disperse and react uniformly in aqueous systems.
The structure of naphthol gives it a certain chemical activity. The naphthalene ring is a fused ring aromatic hydrocarbon with aromatic properties and can participate in the typical reactions of a variety of aromatic compounds. For example, under appropriate conditions, an electrophilic substitution reaction can occur, and the hydrogen atom on the naphthalene ring is replaced by other functional groups, thereby preparing more complex organic compounds for the synthesis of new dyes, pharmaceutical intermediates, etc.
Because of its phenolic hydroxyl group, under basic conditions, the phenolic hydroxyl group can react with alkali to form phenolic salts, enhancing its water solubility and chemical activity. This property is used in the textile printing and dyeing industry, or to adjust the binding method of dyes and fabrics to improve the dyeing effect.
In addition, sodium 2-naphthol-7-sulfonate may also participate in redox reactions. Under the action of specific oxidants, the structure of naphthol may oxidize to form quinones and other oxidation products. Such reactions may have applications in organic synthesis and some analytical and detection methods.
Overall, the chemical properties of Sodium-2-Naphthol-7-Sulfonate make it widely used and valuable in chemical, printing and dyeing, organic synthesis and other fields.

What are the main uses of Sodium 2 - Naphthol-7-Sulfonate

Sodium-2-Naphthol-7-Sulfonate, which is sodium 2-naphthol-7-sulfonate, has a wide range of main uses.
In the printing and dyeing industry, this is a key intermediate. Through a specific chemical reaction, it can be converted into a variety of bright-colored and fastness dyes. Taking reactive dyes as an example, by reacting with corresponding compounds, the prepared reactive dyes can form covalent bonds with fibers when dyeing cotton, linen and other fibrous fabrics. As a result, the dyed fabrics are not only bright in color, but also washable and friction-resistant. They are widely used in the textile printing and dyeing industry, which greatly enriches the color gamut of fabrics.
In the field of medicine, sodium 2-naphthol-7-sulfonate also has important uses. As an important raw material for pharmaceutical synthesis, it can participate in the preparation process of various drugs. For some compounds with specific pharmacological activities, it is necessary to use this as the starting material in the synthesis path. After a series of fine chemical synthesis steps, the drug with therapeutic effect on specific diseases is finally obtained, which makes great contributions to human health.
In the photosensitive material industry, this substance is also indispensable. It can be used as a photosensitive aid to optimize the photosensitive properties of photosensitive materials. In the production of photographic products such as film and photo paper, adding an appropriate amount of 2-naphthol-7-sulfonate sodium can effectively improve the sensitivity, resolution and other key performance indicators of the photographic material, thus making the image clearer and more realistic, and promoting the development of the photographic material industry.

What is the production method of Sodium 2 - Naphthol-7-Sulfonate

The method of preparing Sodium + 2 - Naphthol - 7 - Sulfonate (sodium 2 - naphthol - 7 - sulfonate) follows the classical chemical process in the past.
First, naphthalene is used as the initial material. Naphthalene is sulfonated first, and sulfuric acid is often used as the sulfonating agent. At a specific temperature and reaction time, the naphthalene molecule is introduced into the sulfonic acid group. This step requires attention to the concentration of sulfuric acid and the control of the reaction temperature. If the temperature is too high, it is easy to cause the side reaction of polysulfonation to occur, and unnecessary polysulfonate naphthalene products are generated; if the temperature is too low, the reaction rate will be slow and take a long time. After obtaining naphthalene sulfonic acid, Generally, by heating or adding a specific catalyst, the sulfonic acid groups are rearranged on the naphthalene ring to obtain the desired 2-naphthol-7-sulfonic acid. The isomerization reaction conditions also need to be precisely regulated. The type and amount of catalyst used, the reaction temperature and time will all affect the isomerization effect and product purity. Finally, 2-naphthol-7-sulfonic acid is reacted with basic substances such as sodium hydroxide, and the acid-base is neutralized to form a salt to obtain 2-naphthol-7-sulfonic acid sodium. In this step, the amount of alkali needs to be controlled to avoid overalkali or overacid affecting the quality of the product.
Second, there are also other naphthalene-containing derivatives as starting materials. After a series of substitution, oxidation, sulfonation and other reaction steps, the target molecular structure is gradually constructed. However, this approach often involves multi-step reactions, and the process is complicated. Each step of the reaction requires careful operation and purification to ensure the purity and yield of the final product. The optimization of the conditions of each reaction step is extremely critical, from the proportion of reactants, the choice of reaction solvent, to the reaction temperature, pressure, etc., will affect the reaction process and product characteristics.

Sodium 2 - What Naphthol-7-Sulfonate need to pay attention to when storing

The method of "Tiangong Kaiwu" is related to the hiding of things, and it is essential. When storing sodium-2-naphthol-7-sulfonate, several things need to be paid attention to.
First of all, this thing should be placed in a dry place. If it is in a humid place, water vapor is easy to invade, or cause it to deliquesce. After deliquescence, its nature may change, and when used, it is difficult to achieve the expected effect. For example, if the ancient Tibetan medicine is damp, its medicinal power will decay.
Second, hide it in a shady place away from light. This thing is sensitive to light or sensitive, and its molecular structure may be damaged after being exposed to light for a long time. Just like the ancient Danqing, when exposed to light, its color is easy to fade. If the light shines on it, it will cause a chemical reaction, which will damage its quality.
Furthermore, temperature is also necessary. Do not place it in a high temperature place, high temperature can promote its reaction rate to speed up, or cause decomposition. Just like the ancient alchemy, if the heat is not appropriate, the pill will be destroyed. Also do not place it in a low temperature and extremely cold place to prevent crystallization or solidification, which will cause inconvenience to use, or hurt its inherent properties.
Also, the utensil that hides this thing should be selected with caution. It is advisable to use a corrosion-resistant utensil because it has a certain chemical activity. If the utensil is not resistant to corrosion, it will react with it, contaminate the substance, and damage the utensil. Like the ancient medicine storage, it is necessary to use a suitable utensil to ensure the purity of
Sodium-2-naphthol-7-sulfonate, keep dry, avoid light, adjust temperature, and select the device to ensure its quality for later use.

Sodium 2 - What is the impact of Naphthol-7-Sulfonate on the environment

Sodium-2-Naphthol-7-Sulfonate (sodium 2-naphthol-7-sulfonate) has a significant impact on the environment. If this substance is released in water, it can cause the water quality to deteriorate. It may dissolve into rivers, lakes and seas, making the water bodies contain this chemical, and aquatic organisms bear the brunt. The genus of fish and turtles may be poisoned due to it, physiological functions are disordered, growth and reproduction are blocked, and even death. And it may cause eutrophication of water bodies, algae grow wildly, and bad water ecological balance.
In the soil environment, if this substance penetrates, it can change the soil properties. It may cause changes in soil pH, nutrient loss, damage to microbial communities, affect plant roots to absorb nutrients, hinder plant growth, and reduce agricultural production.
In the atmospheric environment, although this substance is less volatile and enters the gas under normal conditions, it may be improperly produced and disposed of, or it may escape. It may stimulate the respiratory tract, which is unfavorable to human health, and may participate in atmospheric photochemical reactions, affect air quality, and cause increased severe weather such as smog.
From the perspective of the ecosystem as a whole, the existence of 2-naphthol-7-sulfonate sodium can break the ecological chain. Changes in aquatic organisms can cause the lack of food for organisms that depend on it for food, which causes the stability of the ecosystem to decline and the biodiversity to decrease. Therefore, in the industrial production of this substance, it is necessary to strictly control the disposal to prevent it from entering the environment, so as to ensure ecological safety.