5-Chloro-2-[(2-Hydroxy-1-Naphthyl)Azo]-4-Methyl-Benzenesulfonic Acid
Linshang Chemical
HS Code |
723539 |
Chemical Formula | C17H13ClN2O4S |
Molar Mass | 376.814 g/mol |
Chromophore Nature | Azo - containing compound, so has chromophore properties, likely used in coloring applications |
As an accredited 5-Chloro-2-[(2-Hydroxy-1-Naphthyl)Azo]-4-Methyl-Benzenesulfonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | 500g of 5 - chloro - 2 - [(2 - hydroxy - 1 - naphthyl)azo]-4 - methyl - benzenesulfonic Acid in sealed bags. |
Storage | 5 - chloro - 2 - [(2 - hydroxy - 1 - naphthyl)azo]-4 - methyl - benzenesulfonic acid should be stored in a cool, dry place, away from direct sunlight. Keep it in a well - sealed container to prevent moisture absorption and contamination. Store separately from oxidizing agents and incompatible substances to avoid potential chemical reactions. |
Shipping | 5 - chloro - 2 - [(2 - hydroxy - 1 - naphthyl)azo] - 4 - methyl - benzenesulfonic acid should be shipped in sealed, corrosion - resistant containers. Ensure proper labeling for chemicals. Ship via approved carriers following all safety regulations. |
Competitive 5-Chloro-2-[(2-Hydroxy-1-Naphthyl)Azo]-4-Methyl-Benzenesulfonic Acid prices that fit your budget—flexible terms and customized quotes for every order.
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As a leading 5-Chloro-2-[(2-Hydroxy-1-Naphthyl)Azo]-4-Methyl-Benzenesulfonic Acid supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
"5-chlorine" means that the 5th carbon above the benzene ring has a chlorine atom attached; "4-methyl" shows that the 4th carbon of the benzene ring is connected with a methyl group. " In 2 - [ (2 - hydroxy - 1 - naphthyl) azo] "," azo "is a - N = N - structure, and one end of this structure is connected to the second carbon of the benzene ring, and the other end is connected to (2 - hydroxy - 1 - naphthyl).
1 - naphthyl, the naphthalene ring removes the remaining part of a hydrogen atom, where the first carbon is connected to the azo group, and there is a hydroxyl group on the second carbon.
This compound is based on benzene sulfonic acid, and many substituents on the benzene ring are arranged according to specific positions and structures, forming a unique chemical structure. In its structure, the benzenesulfonic acid group is the main frame, the chlorine atom and methyl are based on the specific position of the benzene ring, and the (2-hydroxy-1-naphthyl) azo group is an important substitution structure, which is connected to the benzene ring through the azo bond.
In summary, the structure of this chemical substance is composed of the specific arrangement of each group, and its structural characteristics are accurately reflected by the naming. The structure of each part performs its own role in the whole, which jointly determines the chemical properties and reactivity of the compound.
In the field of chemical analysis, it also has its own shadow. It can be used for qualitative and quantitative analysis of certain substances by virtue of its characteristics. For example, use its unique reaction with a specific substance to determine the existence of the substance or to accurately determine its content.
In the field of scientific research and exploration, it is an important intermediate in organic synthesis, laying the foundation for the synthesis of many new compounds. With it, researchers can build more complex compounds with special properties, and then promote the progress and development of materials science, medicinal chemistry and many other fields.
This substance is also emerging in many other industries, such as leather manufacturing, papermaking and other industries. Due to its special properties, it plays an indispensable role in helping various industries produce better quality products.
Looking at its appearance, it is often in solid form, and the color varies depending on the purity and preparation method, or it is a light yellow to orange powder, or it is crystalline. This compound has specific optical properties under light, and its color is derived from chromophores such as azo groups in the molecular structure, which can absorb light of specific wavelengths, and then exhibit visible colors.
In terms of solubility, it has a certain solubility in water. Due to the presence of sulfonic acid groups in the molecule, the group is hydrophilic and can interact with water molecules to form hydrogen bonds, so it can be partially dissolved in water. However, its solubility in organic solvents may vary. Polar organic solvents, such as ethanol, acetone, etc., have better solubility than non-polar solvents, such as n-hexane, etc., which is determined by the polar characteristics of the molecule.
Melting point is also one of the important physical properties. After determination, its melting point is within a certain temperature range. At this temperature, the substance changes from solid to liquid. This temperature range is of great significance for the identification and purity determination of compounds. The exact value of the melting point is affected by factors such as intermolecular forces and crystal structure. The higher the purity, the narrower the melting point range and the closer it is to the theoretical value.
In addition, the density of this compound is also a specific value, which characterizes the mass of the substance per unit volume. Density is affected by the compactness of the molecular structure, the type and arrangement of atoms. In practical applications, such as separation and purification, density information helps to choose the appropriate method.
In summary, the physical properties of 5-chloro-2- [ (2-hydroxy-1-naphthyl) azo] -4-methyl-benzenesulfonic acid, including appearance, solubility, melting point and density, are important for the study and application of this compound, and are of great significance for its synthesis, analysis and design of practical application scenarios.
First, a suitable starting material needs to be carefully selected. Usually, chlorine-containing, methyl-containing benzenesulfonic acid derivatives, and 2-hydroxy-1-naphthylamine can be selected as starting materials. The characteristics of the starting material have a decisive impact on the subsequent reaction process and the formation of the product structure.
Then, it must go through the azo reaction. The process of converting 2-hydroxy-1-naphthylamine into diazonium salts requires careful operation under low temperature and acidic conditions. Commonly used acids, such as hydrochloric acid or sulfuric acid, can create a suitable acidic environment for the reaction. The purpose of low temperature is to ensure the stability of diazonium salts and prevent them from decomposing prematurely and causing the reaction to go out of control.
Then, the coupling reaction is carried out. The resulting diazonium salts are coupled with chlorine-containing and methyl-containing benzenesulfonic acid derivatives. In this step, the precise regulation of reaction conditions such as pH value and temperature is crucial. The appropriate pH range may enable the reactants to exist in the appropriate ionic form to promote effective collision and reaction between molecules. The temperature also affects the reaction rate and product selectivity. If the temperature is too high, or side reactions are initiated, the yield of the target product will be reduced; if the temperature is too low, the reaction rate will be slow and take too long.
Furthermore, during the reaction process, a variety of monitoring methods need to be used to ensure that the reaction proceeds in the expected direction. Such as thin layer chromatography (TLC), which can observe the changes of each substance in the reaction system in real time to determine whether the reaction is completed and whether there are by-products.
After the synthesis is completed, the product needs to be separated and purified. Classic methods such as column chromatography and recrystallization can be used to remove residual impurities and unreacted raw materials in the reaction system to obtain high-purity 5-chloro-2- [ (2-hydroxy-1-naphthyl) azo] -4-methyl-benzenesulfonic acid. Column chromatography can achieve effective separation of each component according to the difference in material polarity; recrystallization further purifies the product by the difference in solubility.
In this way, this compound can be obtained after a series of delicate operations and strict control. The way of synthesis requires a thorough understanding of chemical principles and a good grasp of experimental operations in order to achieve the ideal synthetic effect.
Bear the brunt, safety protection must not be ignored. This substance may be toxic and irritating, and full armor is essential during operation. Protective gloves, selected to fit the material, fit tightly to the hand to prevent chemical substances from penetrating. Protective glasses, clear light transmission and well sealed, protect the eyes from splashing damage. Masks should also be selected with excellent protective effect to effectively filter harmful gases and fine particles. Wearing experimental clothes, beware of clothing contamination, which may threaten personal safety.
Furthermore, storage conditions are crucial. Find a cool, dry and well-ventilated place and place it properly. Keep away from fire and heat sources, because it may be flammable, it is easy to cause a fire if you are not careful. At the same time, it should be stored in isolation from oxidants, reducing agents, etc. When these substances meet, it is very likely to trigger a violent chemical reaction, endangering safety.
During use, precise operation steps must be strictly followed. When weighing, accuracy is essential, and with the help of precise measuring tools, the dosage is guaranteed to be appropriate. When dissolving, according to its solubility, choose a suitable solvent, control the temperature and stirring speed, and promote uniform dissolution. During the reaction, closely monitor the temperature, pressure and other conditions, and follow the established reaction time to ensure that the reaction is sufficient and smooth.
After the experiment is completed, proper disposal of waste is the key. It should not be discarded at will, and should be collected in accordance with relevant regulations. For containers with residual substances, they must be strictly cleaned and disinfected before they can be discarded or reused.
In short, use 5-chloro-2- [ (2-hydroxy-1-naphthyl) azo] -4-methyl-benzenesulfonic acid, safety and caution throughout, every step of the operation must be rigorous and meticulous, and there must be no slack.

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