3-Hydroxy-4-[(2-Hydroxy-1-Naphthyl)Azo]-7-Nitro-Naphthalene-1-Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	748794
Chemical Formula	C20H13N3O8S
Molecular Weight	455.39 g/mol
Appearance	Typically a colored solid (exact color depends on form and purity)
Solubility In Water	Limited solubility, as it contains polar and non - polar regions
Solubility In Organic Solvents	May be more soluble in polar organic solvents like DMSO, DMF due to its polar groups
Melting Point	Specific value would require experimental determination, likely relatively high due to strong intermolecular forces
Pka	Multiple pKa values due to different acidic groups (hydroxy and sulfonic acid groups), pKa of sulfonic acid group around 1 - 2, phenolic hydroxy pKa around 9 - 10
Ph Dependent Color Change	The azo group can exhibit color changes in different pH environments due to protonation/deprotonation of adjacent groups
Stability	Stable under normal conditions, but sensitive to light, heat and strong oxidizing/reducing agents

Packing & Storage

Packing	Packaging of 100g of 3 - Hydroxy - 4 - [(2 - Hydroxy - 1 - Naphthyl)Azo]-7 - Nitro - Naphthalene - 1 - Sulfonic Acid.
Storage	Store "3 - Hydroxy - 4 - [(2 - Hydroxy - 1 - Naphthyl)Azo]-7 - Nitro - Naphthalene - 1 - Sulfonic Acid" in a cool, dry place away from direct sunlight. Keep it in a tightly sealed container to prevent moisture absorption and air - exposure. Given its chemical nature, store separately from incompatible substances like strong oxidizers or reducing agents to ensure safety.
Shipping	3 - Hydroxy - 4 - [(2 - Hydroxy - 1 - Naphthyl)Azo] - 7 - Nitro - Naphthalene - 1 - Sulfonic Acid is shipped with strict adherence to chemical transport regulations. Packed securely in suitable containers to prevent spills and ensure safe transit.

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3-Hydroxy-4-[(2-Hydroxy-1-Naphthyl)Azo]-7-Nitro-Naphthalene-1-Sulfonic Acid

General Information

Historical Development

Taste the industry of chemical industry, changing with each passing day, there is one thing, the name is 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid. At the beginning, the sages explored its traces in the end, analyzed its nature, and tried their best.
At that time, science and technology were not as prosperous as they are today. Those who studied this thing could only persevere and rely on simple methods. Or in a shabby room, put all kinds of utensils, and observe its changes day and night. At first, only a glimpse of its corner, but everyone worked tirelessly, through the accumulation of years, gradually understanding its reason.
From the initial ignorance, to a little understanding of its nature, and then being able to control it, the hardships are beyond words. Every step forward depends on the wisdom and unremitting work of the predecessors. Its development path, although tortuous, is like a star, illuminating the path of chemical industry, paving the foundation for future generations to study this thing, so that those who come will explore it more.

Product Overview

Today there is a thing called 3 - Hydroxy - 4- [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid. This substance has unique properties, its structure is exquisite, and it is delicately connected by several parts. Hydroxy, nitro, sulfonic acid and other groups are in their respective positions and interact with each other.
View its use, in the field of chemical research, or as an analytical reagent, with its special structure and properties, precise detection and analysis of specific substances. In the dye industry, or because of its unique chromophore groups, it can give fabrics and other materials a brilliant color. Although
is a new object, its promising future. Its unique chemical properties may open up new research directions, bringing new opportunities to materials science, biomedicine and other fields, helping researchers explore the unknown and expand the boundaries of cognition.

Physical & Chemical Properties

The physicochemical properties of 3-hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid are quite important. Looking at its properties, or it is a solid of a specific color, with a specific crystal structure. Its solubility may be soluble in some organic solvents, but its solubility in water may vary. Determination of melting point can be a key indicator for identification and reflect its intermolecular forces. Its chemical properties, due to the presence of hydroxyl groups, nitro groups, sulfonic acid groups and other functional groups, can undergo substitution, esterification, reduction and other reactions. Hydroxyl groups can participate in the formation of hydrogen bonds, affecting their physical properties and reactivity. The presence of nitro groups gives the molecule a certain degree of oxidation and electronic effect. Sulfonic acid groups give it certain water solubility and ionic properties. The study of the physicochemical properties of this substance is of great significance for synthesis, purification and application.

Technical Specifications & Labeling

Today there is a product called 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid. To clarify its technical specifications and identification (product parameters), you should check it carefully.
Looking at this substance, its preparation needs to follow a specific method. The selection of raw materials must be fine, and the reaction conditions must also be carefully controlled. Temperature, duration, and the proportion of reactants are all key. When preparing, it is appropriate to use accurate measurement and a stable environment.
As for the logo, it should be clear. Product parameters should be listed in detail, such as purity geometry, how the characteristics are, are indispensable. In this way, the user can distinguish its advantages and disadvantages, and clarify its application. Technical specifications and identification are indeed of great significance to the circulation and application of the product.

Preparation Method

To make 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid, the method is as follows: Prepare all raw materials first, there is so-and-so, so-and-so, each according to its own nature, and carefully take. As for the production process, first make so-and-so mixed with so-and-so, control it at a suitable temperature, keep it at a certain time, and wait for it to be done. The process should be carefully observed and adjusted in a timely manner. After the reaction is completed, it is separated and purified, and the miscellaneous is removed, leaving the essence. The catalytic mechanism used is to use so-and-so as a medium to promote its rapid response and increase its yield. All steps are in accordance with the rules of the ancient law, and if you proceed with caution, you can get this product for use where you need it.

Chemical Reactions & Modifications

The change of substances is related to reaction and modification, both of which are crucial in the way of chemistry. Today there is 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid. Its chemical reaction can be changed by means of various reagents according to specific conditions. In the way of modification, the physical and chemical properties can be changed by introducing functional groups. In this way, its stability can be increased or its solubility can be changed. The reaction and modification of this substance, if it can be well studied, must be available in the fields of materials and medicine. This is the gist of chemical exploration. We should study it diligently to understand its rationale and make the best use of it.

Synonyms & Product Names

3-Hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid, its synonym and trade name are very important in the field of my chemical research. Looking at its synonym, it may vary depending on different research perspectives and synthesis paths. As for the trade name, it is the name of the merchant based on marketing activities and product characteristics.
This compound may have synonyms such as "[specific synonym 1]" [specific synonym 2] "in the industry, which are determined by each research team according to their own cognition and habits in the past research process. The product name, or "[specific product name 1]", allows merchants to highlight the uniqueness of the product and distinguish it from others, attracting the attention of the industry.
Although the various synonyms and product names are different, they all refer to this specific chemical substance. A detailed study of its title changes is of great benefit to clarifying the development of chemistry and the change of market orientation.

Safety & Operational Standards

Fu 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid This product is related to safety and operating standards, and is well known to our chemical researchers.
On the safe side, the first protection. This product may have certain chemical activity and potential hazards, so the person involved should always have special protective equipment. When handling, wear tight protective clothing to protect against possible erosion; wear delicate goggles to protect your eyes in case; wear a tight mask to prevent harmful particles from entering the body. And the place where the operation is located must be well ventilated, so that the escaping gas can be discharged quickly, so as not to accumulate in the room and cause disaster.
When talking about the operation specifications, at the beginning of the experiment, first check the various utensils used, and be sure to be clean and non-destructive, so as to ensure the accuracy of the experiment. When weighing this thing, the quantity must be accurate, the difference must be the slightest, or the result may be a thousand miles away. When dissolving and matching, according to its physicochemical properties, choose an appropriate solvent, pour it slowly and stir it slowly to promote its homogeneous dissolution. The reaction process, carefully monitor, observe the temperature, duration and other variables, and adjust it according to the predetermined process. If there is a slight deviation, it is urgent to correct it.
Furthermore, after using this thing, the disposal cannot be ignored. Residual liquid waste, classified and prosperous, in accordance with environmental regulations, I would like to send it to a special place for treatment, and must not be disposed of at will, so as not to pollute the environment and harm life.
In short, we study chemical substances, in 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] -7 - Nitro - Naphthalene - 1 - Sulfonic Acid safety and operating norms, must be respected and guarded, in order to avoid disasters, learn the progress of skills, the essence of skills.

Application Area

3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid has many applications in various fields. In the field of dyeing and weaving, it can be used as a dye, its color is bright and the fastness is quite good, and the color of the fabric is gorgeous, and it will not fade for a long time. In the field of analytical chemistry, it can be used as a color reagent, through its reaction with specific substances, showing unique color changes, so as to accurately determine the content of substances. In biochemical research, it is also useful, can mark biomolecules, help observe and explore the reaction process and material metabolism in organisms. In this way, this compound, with its unique properties, blooms in various application fields, contributing to the development of various industries.

Research & Development

Since modern times, chemical refinement has improved, and all kinds of new things have emerged one after another. I focus on the research of 3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid.
At the beginning, I wanted to analyze its properties, but I had no reason to do it. The road to the experiment was full of twists and turns. Or due to the slight difference of the drug, or the slight change in the edge temperature, the results were obtained, and there were always good mistakes. However, I did not dare to relax a little, tried repeatedly, recorded the data in detail, and studied the changes in physical properties.
Then, think about expanding its use. Considering the industry of printing and dyeing, I hope it will add lasting and fresh color; I also think of the field of medicine, hoping to explore its pharmacological potential. Although the road ahead is long and difficult, I uphold the heart of research and am committed to the development of this thing. I firmly believe that with time, I will be able to achieve something, adding bricks and tiles to the chemical industry and benefiting the world.

Toxicity Research

Taste the way of scientific research is related to people's livelihood, and you can't be careless. Today's research on 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] - 7 - Nitro - Naphthalene - 1 - Sulfonic Acid This substance, its toxicity research is particularly important.
Detailed investigation of its properties, or toxicology. In the past, there was very little research, but now I want to study it in detail. Take all things and touch them, observe their changes, and observe the effects on living things. If the skin touches it, there is no abnormality; if it is eaten into the body, how will the vitality change.
The study of toxicity concerns all kinds of people. If people use it, they must first know its harm, so that they can prevent problems before they occur. Study its poison, understand it, and hope that those who use it for future generations will pave the way for safety and avoid disasters. I hope this research can solve the secret of its toxicity, and it will be used by the world, and it will be harmless.

Future Prospects

I have been researching 3 - Hydroxy - 4 - [ (2 - Hydroxy - 1 - Naphthyl) Azo] - 7 - Nitro - Naphthalene - 1 - Sulfonic Acid for a long time. Thinking about its future development, I have a good time.
This product has extraordinary potential in the field of chemistry. It can be used for delicate analysis to help students explore the secrets of matter; or it can participate in the research and creation of new materials and add new colors to industry. Its unique structure and excellent performance will surely emerge over time.
Although there may be thorns in the road ahead, the road to scientific research lies in courage. We should use diligence as our wings and wisdom as our guide to explore the unknown, and hope that its future will shine brightly. In the forest of chemistry, we will make immortal achievements, open up new paths for future generations, and explore the endless possibilities of chemistry.

Frequently Asked Questions

What is the main use of 3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid?

3-Hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid is widely used in the field of chemical industry and scientific research.
In the context of analytical chemistry, it is often used as a chromogenic agent for metal ions. Because its molecular structure contains azo, hydroxyl, sulfonic acid and other groups, it can react specifically with many metal ions to form complexes with specific colors. With this property, the concentration of metal ions in solution can be accurately determined by spectrophotometry. Such as the detection of iron ions, copper ions, etc., which can generate bright-colored complexes, greatly improve the detection sensitivity, and help researchers clarify the composition and content of substances.
In the dye industry, it is also an important raw material. Its rich chromogenic groups give it excellent dyeing properties. The dyes made from this base have bright colors and good fastness, and are widely used in the dyeing process of fabrics, leather and other materials, adding color to the dyeing and finishing industry.
In addition, in the field of biomedical research, it has the potential to interact with biomacromolecules, or it can be used as a probe substance to explore the interaction mechanism between molecules in organisms, helping researchers gain deeper insight into the mysteries of life processes and providing key clues and evidence for drug development.

What are the physical properties of 3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid

3-Hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid This substance has a specific behavior. Its color may be distinct, and it may have a unique reflection under light. At room temperature, it may be in a stable state, but it may change when exposed to heat or a specific environment.
View its solubility, in water, or slightly soluble. If it encounters organic solvents such as alcohols, its solubility may be different from water. The molecular structure of the naphthalene ring is composed of hydroxyl, nitro, sulfonic acid and azo groups, etc. This structure makes it have special chemical activity.
Because of its azo-containing structure or certain color rendering properties, it may be useful in dyeing and weaving industries. And the existence of hydroxyl and sulfonic acid groups makes it hydrophilic to a certain extent, and the presence of nitro groups may affect its chemical activity and stability. Its various physical properties depend on its unique molecular structure, which is also the key to exploring its properties and applications.

What are the chemical properties of 3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid

3-Hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid, this is an organic compound. Its properties are usually colored solids, most of which have certain solubility, and the solubility in organic solvents and water varies. This is related to the polarity of the solvent and the structural characteristics of the compound itself.
When it comes to chemical properties, the molecule contains functional groups such as hydroxyl groups, nitro groups and sulfonic acid groups, so it shows corresponding chemical activity. Hydroxyl groups can participate in esterification, etherification and other reactions. Because of their certain acidity, they can neutralize with bases. The nitro group is a strong electron-absorbing group, which will affect the electron cloud distribution of the molecule, causing the electron cloud density of the naphthalene ring to decrease, so that its electrophilic substitution activity changes, and the nitro group can be reduced to an amino group. Sulfonic acid groups are strongly acidic and can be completely ionized in water, giving the compound good water solubility. At the same time, sulfonic acid groups can participate in the reverse reaction of sulfonation reactions, or substitution reactions with other compounds to introduce different functional groups.
And because of its azo-containing structure, this structure is quite sensitive to light, or photochemical reactions may occur under light conditions, resulting in structural changes, which in turn affect the color state and other properties of the compound. Under certain conditions, the compound may exhibit redox properties, and the functional groups will also affect each other, affecting the overall chemical stability and reactivity. The chemical properties of this compound are rich and diverse, and it has potential application value in many fields such as organic synthesis, dyes, pigments, etc.

How is 3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid synthesized?

The synthesis of 3-hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid is an important topic in the field of organic synthesis. To synthesize this substance, the conventional route of organic synthesis is often followed.
First, a suitable naphthalene derivative is used as the starting material. Naphthalene compounds containing specific substituents, such as 1-naphthalene sulfonic acids, can be selected because of the presence of sulfonic acid groups at specific positions in the naphthalene ring, which can lay the foundation for subsequent reactions. Nitrate it and choose a suitable nitrifying agent, such as the mixed acid system of concentrated nitric acid and concentrated sulfuric acid. The conditions of this nitrification reaction need to be carefully controlled, and the temperature and the proportion of reagents are all critical. The temperature is controlled in a moderate range, and the temperature is generally low to prevent side reactions such as polynitrification, so that the nitro group is precisely introduced into the specific position of the naphthalene ring, resulting in the formation of 7-nitro-1-naphthalenesulfonic acid.
Then, the 2-hydroxy-1-naphthalamine is converted into a diazo salt by diazotization reaction. 2-hydroxy-1-naphthalamine is treated with sodium nitrite and hydrochloric acid at low temperature to form a diazo salt solution. This diazo salt has high activity.
Subsequently, the obtained 7-nitro-1-naphthalenesulfonic acid is coupled with 2-hydroxy-1-naphthalenamine diazoate. Under basic or weakly acidic conditions, the positive ion of the diazoate is coupled with the ortho or para-hydroxyl group in the 7-nitro-1-naphthalenesulfonic acid to form an azo bond, resulting in 3-hydroxy-4- [ (2-hydroxy-1-naphthalenesulfonic) azo] -7-nitro-naphthalenesulfonic acid.
The reaction is complete, and the step of separation and purification is required. Common methods such as recrystallization, selecting a suitable solvent, and taking advantage of the difference in solubility between the product and the impurities in different solvents, the product can be purified. Column chromatography can also be used to separate and purify according to the different adsorption properties of the product and the impurities.
During the synthesis process, each step of the reaction requires fine operation and close monitoring of the reaction conditions to obtain high-purity 3-hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid.

3-Hydroxy-4- [ (2-Hydroxy-1-Naphthyl) Azo] -7-Nitro-Naphthalene-1-Sulfonic Acid What are the precautions during use

3-Hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid, this is a chemical substance. During use, many matters need to be paid attention to.
First, it is related to safety protection. This chemical may be dangerous to some extent, or irritating or even harmful to the human body. Be sure to wear appropriate protective equipment when using, such as protective clothing, gloves and goggles, to prevent it from coming into contact with the skin and eyes. In case of inadvertent contact, rinse with plenty of water immediately and seek medical attention according to the specific situation.
Second, store with caution. It should be stored in a dry, cool and well-ventilated place, away from fire sources, heat sources and oxidants. Due to its chemical properties or instability, improper storage or potential safety hazards.
Third, the specifications for use should be strictly observed. Before use, it is necessary to be familiar with its chemical properties and reaction mechanism. The operation should be carried out in the fume hood to prevent the accumulation of harmful gases. The experimental operation must be accurate, strictly in accordance with the established process and dosage. It must not be changed at will to avoid accidental reactions.
Fourth, the disposal of waste should be compliant. The leftovers and waste after use must not be discarded at will. It needs to be properly handled in accordance with relevant regulations and environmental protection requirements to prevent environmental pollution.
In short, the use of 3-hydroxy-4- [ (2-hydroxy-1-naphthyl) azo] -7-nitro-naphthalene-1-sulfonic acid requires safety and standardized operation to ensure that personnel safety and the environment are not infringed.