2-Naphthalene Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	406266
Chemical Formula	C10H8O3S
Molar Mass	208.23 g/mol
Appearance	white to yellowish solid
Solubility In Water	soluble
Odor	odorless
Ph Aqueous Solution	acidic
Melting Point	124 - 128 °C
Boiling Point	decomposes
Density	1.52 g/cm³
Stability	stable under normal conditions

Packing & Storage

Packing	500 - gram package of 2 - Naphthalene Sulfonic Acid in a sealed, chemical - resistant bag.
Storage	2 - Naphthalene Sulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from heat, ignition sources, and incompatible substances like strong oxidizers. Store in tightly - sealed containers to prevent moisture absorption and degradation. This helps maintain its chemical stability and reduces risks of chemical reactions or safety hazards.
Shipping	2 - Naphthalene Sulfonic Acid should be shipped in tightly - sealed, corrosion - resistant containers. Ensure proper labeling indicating it's a chemical. Transport under conditions that prevent exposure to heat, moisture, and incompatible substances.

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General Information

Historical Development

The formation of 2-naphthalene sulfonic acid has been known since ancient times. At the beginning, the Fangjia used naphthalene as a base and gradually obtained this substance by sulfonation.
In the past, the process was simple and the yield was sparse, and it was only a small-scale trial. In the menstrual years after the year, science and technology advanced and the process was improved. All reaction conditions, such as temperature, duration, and reagent ratio, have been carefully studied.
Because of its gradual increase in yield, it is also widely used. In the printing and dyeing industry, it is an auxiliary agent for adding color; in the chemical industry, it is used as a raw material for synthesizing various compounds. Looking at its historical evolution, from the initial ignorance and temptation to the current mature scale, it is actually driven by science and technology, and it has also witnessed that the road of chemical industry has moved forward step by step without stopping.

Product Overview

The substance of 2-naphthalene sulfonic acid, in the shape of crystalline powder, is often nearly white in color. It is an organic compound with a sulfonic acid group attached to the naphthalene ring. This substance has a wide range of uses and is often involved in the field of dye and auxiliary preparation. When making dyes, it can be used as an intermediate to assist in the reaction of color formation. As an auxiliary agent, it can improve the properties of materials, such as improving solubility and dispersion.
The previous preparation method was obtained by co-heating naphthalene with sulfuric acid and occurring a sulfonation reaction. However, this process needs to be controlled by temperature and time to avoid side reactions. Today's process may be refined, and strives for high yield and excellent purity. Looking at its properties, it is acidic, ionizable in water, and ionic. Due to its structural characteristics, it can interact chemically with other substances to form new products, which is of great significance in the chemical industry.

Physical & Chemical Properties

2-Naphthalene Sulfonic Acid is an important chemical substance, and its physical and chemical properties are worth exploring. The appearance of this substance is often in a specific form, or crystalline, and its color is also characteristic. From the perspective of physical properties, its melting point, boiling point and other parameters are of great significance to its application. In terms of chemical properties, its acidic properties enable it to react with many alkali substances, showing typical acid-base reaction characteristics. Because its structure contains naphthalene ring and sulfonic acid group, it gives it unique chemical activity. These physical and chemical properties determine that it has a wide range of uses in dyes, medicine and other fields. In-depth study of the physical and chemical properties of 2-Naphthalene Sulfonic Acid can provide a solid theoretical foundation for the development and application of related industries.

Technical Specifications & Labeling

For 2-naphthalene sulfonic acid, its technical specifications and identification (commodity parameters) are the key. To observe this product, the method of making it needs to follow delicate procedures. Take suitable materials, follow a specific order, control its temperature and adjust its pressure, so that the reaction is smooth, so as to become a good product.
As for the label, when its nature is clear, such as the depth of color, the presence or absence of taste, and the appearance of the state. It is also necessary to list the proportion of ingredients in detail to prove its purity. The quality of its quality is related to the wide range of uses. In the printing and dyeing industry, the color is uniform; in the chemical industry, it is a good agent.
Strictly abide by technical specifications and confirm the identification (commodity parameters) to obtain the perfection of 2-naphthalenesulfonic acid, so as to meet the requirements of all industries and thrive in the world.

Preparation Method

The method of preparing 2-Naphthalene Sulfonic Acid is as follows: Take the naphthalene as raw material and mix it with sulfuric acid. First, place the naphthalene in the kettle, gradually inject sulfuric acid, and control the temperature. At the beginning, the temperature should be slowly raised, and when it should be raised, it can be adjusted to increase the temperature. When appropriate, check its condition and make sure it is complete.
It should be completed and cooled to obtain the liquid of 2-Naphthalene Sulfonic Acid. To refine the product, or use the method of recrystallization. Dissolve it in water or other solvents, filter out impurities, and then cool the crystallization to obtain a pure product. The mechanism of its synthesis is the sulfonation reaction between naphthalene and sulfuric acid, and the sulfo group of sulfuric acid enters the naphthalene ring to form 2-Naphthalene Sulfonic Acid. The process of preparation should pay attention to the temperature, time and amount of agent in order to obtain good results.

Chemical Reactions & Modifications

Guanfu 2 - Naphthalene Sulfonic Acid This substance, its chemical response and change, can be quite studied. In the past research, there are many good people who seek its response. However, at the beginning or not yet in a good situation, it is often necessary to change its method and adjust its agent in order to obtain good results.
If you want to change its nature, you must carefully observe the mechanism of its response. From the microscopic point of view of its structure, the clutch of its bonds, the level of temperature, and the amount of agent are all related to its response. Every easier, all carefully observe its changes and record its characteristics.
After repeated trials, it may be possible to obtain its good method. With the right temperature, just the agent, to promote its response, so that the nature of progress. In this way, the 2 - Naphthalene Sulfonic Acid in all uses, can develop its long, for the industry's prosperity, technology, add bricks and mortar, to Chang chemistry, should and change the clever.

Synonyms & Product Names

2-Naphthalenesulfonic acid has the same trade name, which can be studied. In the field of chemical production, it is the same as β-naphthalenesulfonic acid. In the market, there are also people who use this different name. The reason for its name is that it originates from different industries, or it highlights the characteristics of the product. For example, a certain name is "refined naphthalenesulfonic acid", which means that its improvement is excellent; and there is "high-efficiency 2-naphthalenesulfonic acid", which is recognized for its excellent performance. This is all due to the promotion of business and the positioning of the product. However, its origin is also 2-naphthalenesulfonic acid. It is necessary to clarify the same name and the quality of its products, so as not to confuse them. It is beneficial to research and life.

Safety & Operational Standards

2-Naphthalenesulfonic acid is essential for its safety and operation specifications.
This compound has characteristics. When storing, be sure to choose a dry, cool and well-ventilated place. Keep away from fire and heat sources to prevent accidents. If it is mixed with oxidants, etc., it may cause dangerous reactions, so it must be stored separately and properly distinguished.
When operating, the operator should be familiar with its characteristics and risks. Wear suitable protective clothing, goggles, masks, etc., to prevent contact and inhalation hazards. The operating environment should also be well ventilated to avoid the accumulation of harmful gases.
When taking it, follow the specified dosage, act slowly and avoid leakage. If you accidentally spill it, don't panic, and quickly clean it up according to the established process. Small leaks can be collected with clean utensils and placed in specific containers; large leaks must be delimited and handled by professionals.
When discarding, it should not be done at will. It should be handled by a qualified organization in accordance with environmental protection and safety guidelines to ensure that it does not pose a threat to the environment and people.
In short, the safety and operation specifications of 2-naphthalene sulfonic acid must not be taken lightly in order to ensure the safety of personnel, environmental harmlessness and orderly production. Everyone must strictly observe it in order to be perfect.

Application Area

2-Naphthalenesulfonic acid has a wide range of application fields. In the dyeing and weaving industry, it is often a key raw material for dye synthesis. Based on it, colorful dyes can be produced, dyeing fabrics with bright and lasting color. In the leather industry, it also plays an important role in helping leather to be soft, tough and improve quality.
Furthermore, in the paper industry, 2-naphthalenesulfonic acid can be used as an auxiliary to optimize paper properties, such as enhancing the strength and smoothness of paper. In some chemical synthesis reactions, it can act as a catalyst to accelerate the reaction process and improve the reaction efficiency. In fact, in many industrial fields, 2-naphthalenesulfonic acid has shown great functions that cannot be ignored, which has greatly contributed to the development of industrial production.

Research & Development

Chemical refinement in modern times, in the research of various things, new and new. Today's talk 2 - Naphthalene Sulfonic Acid This thing, my generation has been studying it for years.
At the beginning, it was quite difficult to make this thing, and the yield was small and the quality was not good. However, we are determined to study it day and night.
Looking at its properties, it has the vitality of sulfonic acid and is widely used in the chemical industry. It is either a raw material for dyes or helpful in pharmaceuticals.
After years of exploration, the production method has been improved. Under the new technique, the yield has gradually increased, and the quality has also improved. The difficulties of the past have been gradually broken.
We know that research is endless, and we must continue the past. The scholars who look to the future also undertake this ambition, so that this thing can go further and further in the road of industry, and achieve great results in the cause of research and development.

Toxicity Research

Since modern times, chemical refinement has resulted in the emergence of new substances. To investigate the toxicity of 2-Naphthalene Sulfonic Acid. To observe its system and take various chemical methods, its quality is a certain shape.
It is effective in all kinds of life, enter the body of a white rat, and observe the changes in its behavior and physiology. Those who eat it are no different at first, but they will be sluggish for a long time. There are also signs of damage to the organs, such as changes in the texture of the liver and weakening of function. When entering the water body, aquatic things are also damaged by it, and the fish are abnormal in their swimming posture, and even die.
From this point of view, 2-Naphthalene Sulfonic Acid is toxic, which is unfavorable to the health of living beings and the balance of ecology. When using it, we should be cautious and study methods to avoid harm, to prevent it from flowing into the world and causing harm to all things.

Future Prospects

Wuguan 2 - Naphthalene Sulfonic Acid has now shown its unique use in the field of chemical industry. However, our eyes should be cast on the future development.
In the future, it may be possible to use exquisite technology to optimize its preparation method, so that the yield will increase and the cost will decrease. And at the application level, it is expected to expand its new path. Or it can emerge in the field of material modification, making the material more superior.
Or in the tide of green chemistry, find a way to harmonize with the environment, so that its production and use are in line with ecological rules. These are the prospects for the future development of 2 - Naphthalene Sulfonic Acid by our chemical researchers, hoping that it will bloom even more brilliantly in the future.

Frequently Asked Questions

What are the main uses of 2-naphthalenesulfonic acid?

2-% carboxylpropionic acid, or malonic acid, did not have this precise chemical name in ancient times, but its related characteristics and applications may be traced. From the perspective of "Tiangong Kaiwu", its main uses should be explored from the perspective of the ancient people's cognition and utilization of substances.
First, in the dyeing of textiles, malonic acid may be used as an auxiliary ingredient of mordant dyes. In ancient dyeing, the dye needs to be firmly attached to the fabric. The carboxyl group of malonic acid can be complexed with metal ions. If it is used in mordant dyeing, it may help metal ions to better combine with fabrics and dyes, making the dyeing firmer and the color more vivid and lasting. For example, the article "Tiangong Kaiwu · Zhangshi" details the method of dyeing, the combination of various dyes and fabrics, mordants are very important, and the characteristics of malonic acid may be implicated in it. Although not directly stated, it may be deduced from chemical principles, or it may be useful.
Second, in the field of pharmaceuticals, ancient healers have rich experience in the processing and application of herbs and natural substances. The structure of malonic acid may make it have a certain chemical activity, which can participate in the transformation or synthesis of certain pharmaceutical ingredients. Although the ancient people did not understand its chemical structure, in practice or found that natural substances containing malonic acid structure can be specially processed to enhance the efficacy of medicine. For example, "Tiangong Kaiwu" does not describe the chemical principle of pharmaceuticals in detail, but there are many records on the selection and treatment of pharmaceutical raw materials. Malonic acid may play a subtle role in the interaction between herbs, and play a role in assisting in the adjustment of medicinal properties.
Third, in brewing and fermentation, malonic acid may affect the metabolic environment of microorganisms. In ancient brewing, whether it is brewing wine, vinegar or making sauces, it all depends on the work of microorganisms. The existence of malonic acid may change the pH of the fermentation system or provide a special carbon source, which affects the growth and metabolic pathways of microorganisms, and then affects the flavor and quality of brewed products. " "Tiangong Kaiwu · Qu Tiller" contains the method of making koji and making wine. The subtle changes in the fermentation environment have a profound impact on the quality of wine, and malonic acid may play a hidden role in it, fine-tuning the fermentation process and product characteristics.

What are the physical properties of 2-naphthalenesulfonic acid?

2-% pentenedioic acid, also known as 2-pentene-1,5-diacid, is an organic compound. Its physical properties are quite unique and are described in detail by you.
Looking at its appearance, 2-% pentenedioic acid is in the shape of a white to light yellow crystalline powder under normal conditions, with a fine texture, which is its visual appearance. As for the smell, the substance has a weak and special smell, but the smell is not strong and pungent, and it needs to be smelled carefully under specific circumstances to be detectable.
Talking about solubility, 2-% pentenedioic acid has a certain solubility in water. Under normal temperature conditions, an appropriate amount of the substance can be slowly dissolved in water to form a uniform solution. However, its solubility is not very high. As the temperature increases, its solubility in water will increase. In addition, it also exhibits good solubility in some polar organic solvents, such as ethanol and acetone.
The melting point of 2-% pentenedioic acid is about 140-145 ° C. When the temperature rises to this range, the compound gradually changes from solid to liquid, and the phase state changes. As for the boiling point, there is no exact and stable boiling point data because the substance may decompose before reaching the boiling point.
Furthermore, 2-% pentenedioic acid has a certain degree of hygroscopicity. In a more humid environment, it is easy to absorb moisture in the air, causing its own deliquescence, so it is necessary to pay attention to moisture resistance when storing.
In summary, the physical properties of 2-% pentanedioic acid cover many aspects such as appearance, odor, solubility, melting point and hygroscopicity, which are all important characteristics for understanding this substance.

What are the chemical properties of 2-naphthalenesulfonic acid?

二－羥基琥珀酸，又稱蘋果酸，乃自然界中廣泛存在之有機化合物。其化學性質頗具特點，容吾詳述之。

就酸性而言，二－羥基琥珀酸分子內含羧基，故而呈酸性。此羧基可在水溶液中部分電離，釋出質子，使溶液呈酸性。其酸性較醋酸稍強，在食品行業常作為酸味劑使用，能賦予食品清新酸爽之味，如飲料、糖果之中，皆可見其身影。

再論及它的羥基性質。分子中之羥基具親水性，此特性使二－羥基琥珀酸易溶於水。且羥基可參與多種化學反應，諸如酯化反應。在適宜條件下，羥基可與羧酸或其衍生物反應，生成酯類化合物。此類酯類常具特殊香味，於香料製造業用途頗廣。

此外，二－羥基琥珀酸還具一定的還原性。分子中的羥基和羧基結構，使其在特定條件下可被氧化。例如，在一些氧化劑作用下，羥基可被氧化為羰基，進而使分子結構發生改變。此還原性在某些生物化學反應及有機合成中發揮重要作用。

二－羥基琥珀酸之化學性質使其在眾多行業得以廣泛應用，從食品添加到化學合成，皆離不開此物。其在自然與人工合成之領域，均佔有重要地位。

What are the precautions for the production of 2-naphthalenesulfonic acid?

First, the essence of raw materials is very important. Wei Wei flowers are used as the main raw materials, and they are suitable for flowers that are damaged, diseased and prosperous. Its poor quality directly affects the amount of Wei Wei acid. If the flowers are damaged or infected, they are afraid of being mixed in, which will affect the quality of the finished product.
Second, the method of improving the quality of Wei Wei is used. Water steaming, soluble extraction and other methods are commonly used. Water steaming and steaming, and the control of the temperature should not be lost. The fire may break the chemical properties of Wei Wei acid, and the efficiency of extraction is low when the fire is small. Dissolution extraction and dissolution of Wei acid are also studied. Wei Wei acid has good solubility and is easy to separate and poison.
Third, environmental factors should not be ignored. The quality and quality of the raw material should be kept constant. If the quality is high, the chlorine acid or chlorine will dissipate; if the quality is high, it may breed microorganisms and dye the product.
Fourth, the operation process must be careful. When the raw materials are put into the finished product, the quality of each step should be followed. If the mixing speed, reaction speed, etc., there is a slight difference, it may lead to insufficient or insufficient reaction, which will affect the quality of the product.
Fifth, the quality of the product is also high. The crude product obtained from the extraction needs to be removed and improved. However, with the help of first-order means, such as high-performance liquid chromatography, etc., the content of virginal acid and the content of virginal acid can be determined precisely to ensure that the product meets the requirements of the product.

What are the effects of 2-naphthalenesulfonic acid on the environment?

2-% naphthalenesulfonic acid, its impact on the environment is quite complex, try to discuss it in detail.
This substance is widely used in the industrial field, but it is discharged into the environment, or causes many effects. The first one to bear the brunt is the impact on water bodies. If wastewater containing 2-naphthalenesulfonic acid is not properly treated and discharged into rivers, lakes and seas, it may accumulate in water bodies. Aquatic animals and plants are exposed to this polluted water body for a long time, and their physiological functions are easily damaged. The gills of fish may be stimulated, causing damage to respiratory function and affecting their survival and reproduction. The photosynthesis process of aquatic plants may also be disturbed, resulting in poor growth and destroying the ecological balance of water bodies.
Furthermore, it also has an impact on the soil environment. When substances containing 2-naphthalenesulfonic acid enter the soil, or change the physical and chemical properties of the soil. It can interact with minerals and organic matter in the soil, affect the structure of soil aggregates, and reduce soil aeration and water permeability. In addition, it may have a toxic effect on the soil microbial community, inhibiting the growth and metabolic activities of beneficial microorganisms in the soil, such as microorganisms involved in the nitrogen cycle and phosphorus cycle, which in turn affects the cycle and transformation of soil nutrients and weakens soil fertility.
In the atmospheric environment, although 2-naphthalenesulfonic acid mainly does not exist in the gaseous form, it may evaporate into the atmosphere during specific production processes, such as high temperature reactions or drying processes. If 2-naphthalenesulfonic acid in the atmosphere is photochemically reacted or forms secondary pollutants, it will have a negative impact on air quality and endanger human respiratory system health.
And 2-naphthalenesulfonic acid has certain bioaccumulation. When organisms ingest food or water contaminated by it, the substance may gradually accumulate in the organism, and be transmitted and amplified along the food chain. Organisms at the top of the food chain have a potential threat to biodiversity due to the concentration of 2-naphthalenesulfonic acid in the body, which may be significantly higher than that in the environment.