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Home Products 2-Naphthol Disodium Sulfonate ( R Salt

Sulfonic Acid Series Sulfamic Acid Series Guanidine Series

Sulfonic Acid Series

Sulfamic Acid Series

Guanidine Series

2-Naphthol Disodium Sulfonate ( R Salt

Specifications

HS Code	775201
Chemical Formula	C10H6Na2O5S
Molar Mass	278.2 g/mol
Appearance	white to yellowish powder
Solubility In Water	soluble
Ph Of Aqueous Solution	alkaline
Melting Point	decomposes
Odor	odorless
Stability	stable under normal conditions
Hazard Class	non - hazardous for most common uses

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

Packing & Storage

Packing	500 - gram pack of 2 - Naphthol Disodium Sulfonate (R Salt) in air - tight bags.
Shipping	2 - Naphthol Disodium Sulfonate (R Salt) is shipped in well - sealed containers to prevent moisture and contamination. Procedures adhere to chemical transport regulations, ensuring safe transit of this specialty chemical.
Storage	2 - Naphthol Disodium Sulfonate (R Salt) should be stored in a cool, dry place, away from direct sunlight and heat sources. Keep it in a well - sealed container to prevent moisture absorption and contact with air, which could potentially lead to degradation. Store separately from incompatible materials like strong oxidizing agents to avoid chemical reactions.

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Certification & Compliance

2-Naphthol Disodium Sulfonate ( R Salt is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales7@alchemist-chem.com.

General Information

Historical Development

2 - Naphthol Disodium Sulfonate (R salt) is also a chemical substance. The origin of its history can be traced back to the past. At the beginning, people did not have a deep understanding of chemistry, and their knowledge of this substance was still shallow.
It was delayed at the later age, and various researchers worked hard to study it, gradually understanding its properties and uses. On the road of experimentation, there were many attempts, and after mistakes, they finally made progress. It has gradually shown its function in various fields of chemical industry, and is valued by the industry.
Years pass, and research is not limited. From the initial ignorance to today's growing cognition, R salt has gained a place in the forest of chemistry. The origin of its micro-influence to the present day, all rely on the unremitting efforts of researchers, thus becoming the development process of this chemical.

Product Overview

Sodium 2-naphthol disulfonate (R salt) is a compound of considerable significance in the chemical industry. Its shape may be powder, and its color is often white to yellowish. This substance is widely used in many industrial processes. In the field of dye synthesis, it is often used as a key intermediate to help dyes generate colorful colors. Its chemical properties are stable, and under specific conditions, it can react with a variety of reagents to achieve complex organic structures. During preparation, precise temperature control, pressure control and raw material ratio are required to achieve ideal purity and yield. In storage, it should be placed in a dry and cool place to avoid contact with strong oxidants and other substances to prevent deterioration. Its application in industry promotes the development of chemical technology and adds color to many industries.

Physical & Chemical Properties

There is a substance today, called 2-Naphthol Disodium Sulfonate (R Salt), which is often the object of investigation in my chemical research. Its physical and chemical properties are worth studying.
Looking at its physical properties, under room temperature, it shows a specific color state, or is in the shape of a powder, with a bright color. Its solubility varies from solvent to solvent, and in water or organic solvents, the degree of solubility varies, which is related to the interaction between its molecular structure and solvent.
In terms of its chemical properties, it has a specific reactivity. When encountering certain reagents, it can cause unique chemical reactions or form new compounds, all due to the characteristics of its intramolecular chemical bonds. Its stability is also an important point. Under different environmental conditions, it may be stable or variable, and there are many factors affecting it, such as temperature, pH, etc.
The study of the physical and chemical properties of this substance is very helpful in the field of chemistry, and can provide a solid theoretical foundation for related industrial applications and scientific exploration.

Technical Specifications & Labeling

2 - Sodium naphthol disulfonate (R salt) process specification and identification (product parameters)
Fu 2 - sodium naphthol disulfonate, that is, R salt, the process specification is related to the production method. From the selection of raw materials, it must be pure and free of impurities, and fit the specific quality. The production process must be in a precise order, with temperature control and speed regulation, all of which are fixed. If there is a slight difference, the quality will not meet the standard.
As for the identification, the product parameters should be specified in detail. The proportion of ingredients should be accurate to the millimeter; the appearance properties should be described in clear language; and the stability and solubility characteristics should not be omitted. In this way, the user knows the details in order to meet the needs of all parties and ensure the quality of the product.

Preparation Method

The raw materials and production process are the key to the preparation of sodium 2-naphthol disulfonate (R salt). First take an appropriate amount of 2-naphthol, mix it with concentrated sulfuric acid in a specific ratio, and sulfonate it at a suitable temperature. This is the initial step of the reaction. During the reaction, it is necessary to precisely control the temperature and time to make the sulfonation sufficient.
After sulfonation, add an appropriate amount of sodium hydroxide solution for neutralization, adjust the pH to a suitable range, and promote the formation of sodium 2-naphthol disulfonate. After neutralization, the reaction solution is separated and purified to remove impurities. Pure sodium 2-naphthol disulfonate crystals can be obtained by means of filtration and crystallization. This preparation process requires close interlocking of all aspects and rigorous operation to ensure product quality.

Chemical Reactions & Modifications

2 - Naphthol Disodium Sulfonate (R Salt) is also a chemical compound. Its chemical and reverse modification is the key to chemical research.
If you want to study its reverse, you must first clarify its properties. This kind of thing is special, and the reverse reaction is often caused by multi-phase interaction. In case of a certain acid, or the formation of a chemical, the atom is heavy, and the new compound is formed. Among them, the cracking of the chemical is subtle and difficult.
As for the modification, different means can be used. Or add catalysis to increase the speed of the reaction, and it can reduce the properties of the chemical. Or change the anti-chemical parts, such as the degree of strength and force, can also make its properties bigger. In this way, R Salt can be used for more purposes, or it can be increased or its activity can be changed, which is the ingenuity of the person.

Synonyms & Product Names

2-Sodium naphthol disulfonate (R salt), this substance is quite important in the field of chemistry. There are many other names. In ancient books, it may be called sodium salt of sodium naphthol sulfonate, and it is also called by the name of sodium sulfonated naphthol salt. As for the trade name named by the trade name, it may vary from place to place, but it all revolves around its chemical essence.
According to records in various chemical classics, this substance exists under different names, depending on the region and industry habits. Although the names are different, they all refer to sodium 2-naphthol disulfonate (R salt). It has an indispensable position in many fields such as chemical synthesis and dye preparation. With its unique chemical properties, it contributes to various processes.

Safety & Operational Standards

2 - Code of Safety and Operation of Naphthol Disodium Sulfonate (R Salt)
Fu 2 - Naphthol Disodium Sulfonate, commonly known as R Salt, is very important in chemical research and industrial practice. However, in order to ensure the safety of its use, the operation is standardized and orderly, and there must be detailed rules.
View its safety and store it first. R salt should be placed in a cool, dry and well ventilated place, away from fire and heat sources. Due to its chemical properties, in case of high temperature or open flame, it may change unexpectedly. And it must be stored in isolation from oxidants, acids, etc., to prevent dangerous interaction. In the storage place, suitable materials should be prepared to contain the leakage in case of emergency.
As for the operation specifications, the operator must be professionally trained, familiar with the operation process, and strictly abide by the operating procedures. When operating, wear suitable protective clothing, protective gloves and goggles to prevent contact injuries. If working in a poorly ventilated area, necessary ventilation equipment is indispensable to disperse the harmful gases that may be generated.
If a leak unfortunately occurs, the leaked contaminated area should be immediately isolated and personnel should be restricted from entering and leaving. Emergency responders should wear full masks and anti-acid and alkali overalls to avoid contact between leaks and combustible substances. In the event of a small amount of leakage, a clean shovel can be used to collect it in a dry, clean, and covered container; in the event of a large amount of leakage, a dike or pit should be built to contain it, and it should be transferred to a tanker or a special collector by pump for recycling or transportation to a waste treatment site for disposal.
In summary, safety is the top priority in the use and operation of R salt, and it should be followed by standards. In this way, disasters can be avoided and the smooth progress of research and production can be ensured.

Application Area

Sodium 2-naphthol disulfonate (R salt) is useful in many fields. In the dyeing and weaving industry, it can be used as a dye intermediate, and the dyeing aid is evenly colored, the color is bright and lasting, and the fabric is bright and moving after dyeing, and it will not fade for a long time. In the development of medicine, its characteristics may be involved in the synthesis of some drugs, adding help to the cure of diseases, but the specific effect still needs to be further explored. In chemical analysis, it can be used as a reagent to accurately measure the composition and content of substances, and help researchers understand the properties of substances. From this point of view, sodium 2-naphthol disulfonate (R salt) is widely used and has important value in various fields. It is waiting for researchers to further tap its potential to bring more benefits.

Research & Development

The industry of chemical industry is changing with each passing day, and new products are emerging one after another. Today there is 2 - Naphthol Disodium Sulfonate (R Salt), which is of great significance in our chemical research.
My generation devoted myself to this, exploring its properties and studying its methods. Observe its preparation techniques, and strive to improve, in order to increase its quality and quantity. Observe its physicochemical properties, analyze the reactions under various conditions in detail, hoping to clarify its mechanism, and lay the foundation for subsequent development.
The use of R Salt is also widely involved in various fields. Or in dyeing and weaving, add its color and beauty; or in scientific research, help its analysis. We should make unremitting efforts to expand its use and innovate its approach, so that this product can shine in the industrial forest, contributing to the development of chemistry, reaching new territory, and promoting the prosperity of this industry.

Toxicity Research

Taste of chemical substances, 2 - Naphthol Disodium Sulfonate (R Salt), is among the studies of our generation. The study of its toxicity is related to the health of everyone and the safety of the environment, and cannot be ignored.
We have tried our best to study it, and measure the signs of its toxicity by scientific methods. After various experiments, observe its response to biological organisms, and analyze the law of migration and transformation between environments.
The study of toxicity is not a temporary achievement, but a matter of caution after menstrual years. Strive to clarify its nature, so that everyone knows its advantages and disadvantages, use it appropriately, avoid its harm and pursue its benefits, and ensure the safety of one's water and soil life. This is the responsibility of our generation of chemical researchers.

Future Prospects

Today there is a thing called 2 - Naphthol Disodium Sulfonate (R Salt), and we look at its future prospects as a chemist. This material is unique and has potential uses in many fields.
Looking at the industry, it may be able to emerge in the dyeing and weaving, helping the color to be firm and adding color to the fabric. In the process of scientific research, it is also expected to provide a cornerstone for the research and development of new drugs and open up the unknown. And in terms of material innovation, it may be able to find another way to give birth to new materials to meet the needs of the times.
Although there may be thorns in the road ahead, we uphold the heart of exploration and are not afraid of difficulties. It is expected that in the future, this R Salt will be able to shine brightly, leaving a strong impression in various fields, bringing well-being to the world and achieving an extraordinary career.

Where to Buy 2-Naphthol Disodium Sulfonate ( R Salt in China?

As a trusted 2-Naphthol Disodium Sulfonate ( R Salt 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 2-Naphthol Disodium Sulfonate ( R Salt supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

What is the main use of 2-Naphthol Disodium Sulfonate (R Salt)?

Sodium 2-naphthol-3,6-disulfonate (R salt) has a wide range of uses and is an important intermediate in the printing and dyeing industry. It can produce a variety of direct dyes, such as direct sun-resistant blue B2RL, direct lake blue 5B, etc. This kind of dye is used for dyeing and printing of cotton, linen, viscose and other fiber fabrics, with bright color and good fastness.
In the pharmaceutical field, R salt also plays a key role. It can synthesize certain pharmaceutical ingredients. Although specific drugs are difficult to list in detail because they involve professional pharmaceutical chemical synthesis, they participate in the reaction as raw materials or intermediates in the production process of specific drug research and development, and help synthesize compounds with specific pharmacological activities, making great contributions to the pharmaceutical industry.
In the field of organic synthesis, R salts, as compounds with specific structures and reactivity, can participate in many organic reactions. With the structural properties of naphthalene rings and sulfonic acid groups, they react with other organic reagents such as substitution and condensation to synthesize organic compounds with complex structures and diverse functions. These compounds are widely used in materials science, fine chemistry and other fields, such as the preparation of polymer materials with special properties, functional auxiliaries, etc. In short, sodium 2-naphthol-3,6-disulfonate (R salt) plays an important role in many branches of chemical industry and promotes the development of related industries.

What are the physicochemical properties of 2-Naphthol Disodium Sulfonate (R Salt)

2-Naphthol-3,6-disulfonate sodium (R salt) is one of the organic compounds, and its physicochemical properties are worth exploring.
Looking at its properties, it is mostly white to light gray powder at room temperature, which is easy to store and use. And it is very soluble in water, which makes it rapidly disperse and dissolve in many aqueous systems, laying the foundation for subsequent reactions or applications.
When it comes to melting point, this substance has a specific melting point value, but the exact value varies slightly depending on the specific purity and determination conditions. The existence of the melting point indicates that the transition from solid state to liquid state has a certain temperature node during the heating process. This is a key characterization of its physical properties and is of great significance for industrial purification and quality control.
In addition to chemical stability, under general conditions, sodium 2-naphthol-3,6-disulfonate is quite stable and is not prone to spontaneous chemical reactions. However, when encountering strong acids, strong bases or strong oxidants, its chemical structure is easily damaged. In case of strong acids, sulfonic acid radical groups may react, resulting in molecular structure changes; in case of strong oxidants, phenolic hydroxyl groups may be oxidized, affecting their inherent chemical properties and functions.
In acid-base environments, its performance is also different. In an alkaline environment, phenolic hydroxyl groups can be ionized to form corresponding phenate ions, which enhances their water solubility and reactivity; in an acidic environment, the acidity of sulfonic acid groups can cause them to neutralize with basic substances, exhibiting specific chemical behaviors.
This compound contains phenolic hydroxyl groups and sulfonic acid groups. The phenolic hydroxyl groups have certain reductive and weak acidic properties, and can participate in organic reactions such as esterification and alkylation; the sulfonic acid groups endow it with good water solubility and ionic properties, making it potential applications in ion exchange, surfactants and other fields. In summary, the unique physical and chemical properties of sodium 2-naphthol-3,6-disulfonate have important application value in many fields such as chemical industry and materials.

What is the production process of 2-Naphthol Disodium Sulfonate (R Salt)?

Sodium 2-naphthol-6,8-disulfonate (R salt) can be prepared by alkali fusion reaction of 2-naphthol and sodium sulfite. The specific preparation method is as follows:
Put 2-naphthol into the reaction kettle, add alkali solution to heat up to 200-230 ° C for alkali fusion reaction to generate 2-naphthol sodium salt. Then add sodium sulfite to the reaction system, and react at 180-220 ° C to generate 2-naphthol-6,8-disulfonate crude product. In this step, sodium sulfite provides a sulfonic acid group to realize the sulfonation reaction.
After the crude product is dissolved in water, add activated carbon to decolorize and remove impurities, and filter it while hot to remove insoluble impurities. The filtrate is cooled and crystallized to crystallize 2-naphthol-6,8-disulfonate sodium. Then centrifuged to obtain the crystalline product, and then dried to obtain the finished product 2-naphthol-6,8-disulfonate sodium (R salt).
The production process needs to strictly control the reaction temperature, raw material ratio and reaction time and other parameters. If the temperature is too high or the time is too long, side reactions may occur, affecting the purity and yield of the product; improper raw material ratio will also affect the reaction process and product quality. Operating procedures should be followed in production to ensure safe production, while paying attention to environmental protection, and properly treating waste water, waste gas and other wastes generated in the production process.

What is the price range of 2-Naphthol Disodium Sulfonate (R Salt) in the market?

The price range of sodium 2-naphthol-3,6-disulfonate (R salt) in the market is difficult to determine. Its price often changes with time and depends on various factors.
In the past, the price of chemical industry was always related to supply and demand, the source of raw materials, the complexity and simplicity of the manufacturing process and the competition in the market. As for sodium 2-naphthol-3,6-disulfonate, if its raw materials are abundant, the manufacturing process is skilled and simple, and the market demand is not extremely abundant, the price may be leveled. However, if raw materials are scarce, the manufacturing process is difficult, and there are many needs, the price will rise.
Check the market conditions of the old year. The price of this product per kilogram may be between tens of yuan and hundreds of yuan. If it is of high quality and meets special needs, the price may be more expensive. However, the market is volatile, and the price can change at any time. To know the current price, you need to consult the chemical industry, the market broker, or look at the recent business and trade conditions.

2-Naphthol Disodium Sulfonate (R Salt) Quality Standards

The quality standard of 2-naphthol-3,6-disulfonate sodium (R salt) is not exactly described in Tiangong Kaiwu, but according to the usual practice of chemical substances and current knowledge, it can be made as follows.
View its purity, this is the key indicator. High purity of 2-naphthol-3,6-disulfonate sodium can play a stable and efficient role in various industrial processes, such as dye preparation, drug synthesis and other links. Usually, high-quality products should have a purity of more than 98% and few impurities to meet the needs of high-end applications. If the purity is insufficient, impurities exist in it, or cause reaction deviation, and the product is impure, which affects the quality of the final product.
Re-examine its appearance. Normally, it should be white to slightly yellow crystalline powder. This appearance characterization is not only related to the uniformity of its physical morphology, but also reflects the stability of the production process. If the appearance color is abnormal, or there is agglomeration and other phenomena, or it suggests that the production process is unevenly heated, insufficiently dried, or the storage conditions are poor, resulting in changes in its quality.
As for its solubility, it should have good solubility in water. Because it is mostly used in aqueous reaction systems, good solubility can ensure its rapid dispersion, full contact with other reactants, and promote the smooth progress of the reaction. If the solubility is poor, the reaction efficiency will be low, and unsoluble substances may remain, which will affect the purity and performance of the product.
At the same time, its pH should not be ignored. A suitable pH environment helps to maintain its chemical stability and avoid side reactions such as hydrolysis. Generally speaking, the pH value of its aqueous solution should be controlled in a specific range, such as between 6.5 and 7.5, so as to ensure its stability during storage and use.
Also consider its heavy metal content, such as lead, mercury, cadmium and other heavy metals, which need to be strictly limited. Because sodium 2-naphthol-3,6-disulfonate is often involved in food and medicine-related interconnections, heavy metals exceed the standard, which will endanger human health and do not meet environmental protection and safety standards.
Particle size distribution is also a key point for quality consideration. The uniform particle size is conducive to its uniform dispersion in the reaction system and ensures the consistency of the reaction. Too coarse or too fine particle size may affect its fluidity and dispersion, which in turn affects product quality and production efficiency.