Sodium 4-Amino-5-Hydroxy-3-(4-Nitrophenylazo)-6-(Phenylazo)Naphthalene-2,7-Disulphonate

Sodium-4-amino-5-hydroxy-3- (4-nitrophenylazo) -6- (phenylazo) naphthalene-2,7-disulfonate, this is a complex organic compound. According to its name, it is composed of a combination of many groups.
The first is sodium, which is a metal ion, and is often present in cationic form in compounds.
"4-amino" refers to the 4-position of the naphthalene ring connected with an amino group (-NH ²). The amino group is basic and can participate in many chemical reactions, such as salting with acids.
"5-hydroxyl", indicating that there is a hydroxyl group (-OH) at the 5 position of the naphthalene ring, and the hydroxyl group is active, which can not only form hydrogen bonds, but also participate in esterification, substitution and other reactions.
"3 - (4-nitrophenylazo) " means that the 3 position of the naphthalene ring is connected to 4-nitrophenyl group (-C H NO ³) through the azo group (-N = N-), and the nitro group has strong electron absorption, which affects the electron cloud distribution and reactivity of the compound.
"6- (benzenazo) ", that is, the 6-position of the naphthalene ring is connected to the phenyl group (-C H) with an azo group. This structure also affects the properties and reaction characteristics of the compound.

"Naphthalene-2,7-disulfonate", both the 2nd and 7th positions of the naphthalene ring are connected with sulfonate (-SO 🥰), and form salts with sodium ions (Na 🥰). Sulfonate is hydrophilic, which enhances the solubility of the compound in water.
In summary, this compound presents unique physical and chemical properties due to the interaction of various groups, and may have potential uses in organic synthesis, dyes and other fields.

"Tiangong Kaiwu" is an ancient Chinese scientific and technological book. In ancient Chinese, it is said that Sodium + 4 - Amino - 5 - Hydroxy - 3 - (4 - Nitrophenylazo) - 6 - (Phenylazo) The physical properties of Naphthalene - 2, 7 - Disulphonate should be described in terms of ancient elegance.
This substance has color, or is in a distinct state, such as clouds in the sky, with unique color, or is gorgeous and eye-catching. Its shape may be a fine powder, like the first snow in winter, delicate and uniform; or it may be a crystal of crystal, if it is clear of beautiful jade, it has a warm luster.
When it comes to solubility, it can be dissolved in water or some solvents, just like ice and snow entering a soup, quietly disappearing and evenly dispersing; or it is insoluble, like a rock entering water, standing still and staying in it. Its stability, in ordinary environments, may last for a long time, just like a thousand-year-old tree, tenacious; in case of special conditions, high temperature, strong acid, strong alkali, etc., or like rotten wood in fire, it changes in an instant and undergoes wonderful transformation.
Furthermore, its density is also one of its characteristics, or heavier than water, such as iron stone sinking into the abyss; or lighter than water, like floating waves of wood leaves. All these physical properties are the key to exploring this substance, like the key to unlocking a mysterious treasure house, helping us to understand its essence and characteristics for future use, or for ingenious tricks, or for the good of the world, all rely on this deep understanding of the nature of matter.

Sodium + 4 - Amino - 5 - Hydroxy - 3 - (4 - Nitrophenylazo) -6 - (Phenylazo) Naphthalene - 2,7 - Disulphonate is a rather special chemical substance. Its main application field is quite wide.
In the field of dyeing, this substance shows extraordinary value. The cover has a unique structure, which can be firmly combined with fabric fibers, and is dyed in bright colors and good fastness. In many traditional fabric dyeing processes, it is often used as an important dye component, which can give fabrics a variety of colors. Whether it is natural fiber fabrics such as silk and cotton, or some chemical fiber fabrics, the ideal dyeing effect can be achieved through this substance.
In the field of analytical chemistry, it also has its uses. Because of its sensitive color reaction to specific substances, it is often used for qualitative or quantitative analysis of certain metal ions, organic compounds, etc. With its significant color change after interacting with the target analyte, the analyst can easily determine the presence of the target substance and accurately determine its content, providing an efficient and accurate means for chemical analysis work.
In terms of scientific research and exploration, this substance is also valued by researchers. Due to its complex structure and special properties, it is helpful for scientists to deeply explore basic chemical problems such as molecular interactions and electron transfer mechanisms. By studying its reactions and properties under different conditions, it may bring new enlightenment and breakthroughs to the research and development of new materials and the interpretation of chemical reaction mechanisms.

To prepare Sodium + 4 - Amino - 5 - Hydroxy - 3 - (4 - Nitrophenylazo) - 6 - (Phenylazo) Naphthalene - 2,7 - Disulphonate, the method is as follows:
First take an appropriate amount of naphthalene, through the method of sulfonation, introduce the sulfonic acid group at a specific position of the naphthalene. This step requires attention to the reaction conditions, such as temperature, the amount of sulfonating agent, etc., so that the sulfonic acid group can be accurately introduced into the 2,7 positions of the naphthalene ring to obtain 2,7 - naphthalene disulfonic acid.
Then, nitrate 2,7-naphthalene disulfonic acid. In this process, control the degree and conditions of nitrification, and introduce the nitro group into the appropriate position. For example, under specific conditions, the nitro group can be introduced into the 4-position to obtain 4-nitro-2,7-naphthalene disulfonic acid.
Next, the nitro compound is reduced to convert the nitro group into an amino group, resulting in 4-amino-2,7-naphthalene disulfonic acid.
Then select an appropriate diazo reagent, such as p-nitroaniline after diazotization, coupling reaction with 4-amino-2,7-naphthalene disulfonic acid, 4-nitrophenyl azo group is introduced at the 3-position of the naphthalene ring. After
, another aniline is taken after diazotization, and it is coupled with the above product again, and phenyl azo group is introduced at the 6-position.
Finally, the product is reacted with a sodium-containing reagent to combine certain groups in the compound with sodium to obtain Sodium + 4 - Amino - 5 - Hydroxy - 3 - (4 - Nitrophenylazo) - 6 - (Phenylazo) Naphthalene - 2,7 - Disulphonate. The purity and yield of the product can only be improved by carefully controlling the conditions of each step of the reaction, including temperature, pH, and the ratio of reactants.

This is the sodium salt of 4-amino-5-hydroxy-3- (4-nitrophenylazo) -6- (phenylazo) naphthalene-2,7-disulfonic acid, often referred to as medium orange 10. In the environment and human body, its impact is quite complex.
First talk about the environment. If this substance flows into natural water bodies, it may pose a threat to aquatic organisms. Because its structure contains groups such as azo and nitro, it may be toxic. If it is ingested by aquatic organisms, it may interfere with their normal physiological functions, affect growth, reproduction, and even cause death. And it degrades slowly in water bodies, or persists for a long time, continuously accumulates, and destroys the aquatic ecological balance. If it enters the soil, it may affect the activity of soil microorganisms, change soil structure and fertility, and then affect plant growth.
As for the human body, inhalation through the respiratory tract, skin contact or accidental ingestion may cause harm. The functional groups such as nitro and azo groups contained in this substance may be allergenic. After skin contact, some people may cause contact dermatitis, redness, itching, rash and other symptoms. Long-term inhalation of its dust may irritate the respiratory tract, causing respiratory diseases such as cough and asthma. It is particularly critical that some azo compounds may decompose under specific conditions in the human body to produce aromatic amines. Some aromatic amines have been proven to be carcinogenic. Long-term exposure may increase the risk of cancer. Therefore, for this substance, it is necessary to use it cautiously and dispose of it properly, and strengthen supervision and prevention and control to reduce the adverse effects on the environment and human health.