Disodium 1-Amino-9,10-Dihydro-4-[(4-Methyl-2-Sulphonatophenyl)Amino]-9,10-Dioxoanthracene-2-Sulphonate

Fuchidosodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxanthracene-2-sulfonate, has a wide range of uses. In the field of printing and dyeing, it is often used as a dye, because of its special structure, it can make the fabric with a bright color and good color fastness. It can be used for dyeing of cotton, linen, silk and other fiber fabrics. The dyed objects are colorful and will not fade for a long time.
In the paper industry, it also has its own image. It can give paper a specific color, whether it is making exquisite picture albums, high-end wrapping paper, or daily writing paper, it can add color and enhance the visual effect of paper products.
In the manufacture of ink, this substance is also an important raw material. It can make the ink full of color, and the printed pattern and text are clear and shiny. It is widely used in various printing fields, such as book printing, advertising printing, etc., to help improve the quality of printed matter.
In addition, it is also indispensable in the preparation of some special materials. Or because of its unique chemical properties, it can participate in specific reactions, give materials different properties, help the research and development and production of new materials, and promote the progress of materials science.

This is a disodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxanthracene-2-sulfonate, its chemical properties are as follows:
In appearance, it is often in solid form or in powder form, and the color varies according to impurities and purity, mostly white to light yellow.
Solubility is very important, showing good solubility in water. With the sulfonic acid group in its structure, it can form a strong interaction with water molecules, and then easily soluble in polar solvents, but poor solubility in non-polar solvents.
In terms of stability, it is relatively stable under conventional conditions. However, in the case of strong acid and strong base, the amino group and sulfonic acid group in the molecular structure will react and cause structural changes. Under high temperature environment, or decomposition reaction occurs, the decomposition temperature depends on the specific conditions.
It has a significant sulfonic acid group, which endows the compound with strong acidity. In aqueous solution, sulfonic acid can partially ionize hydrogen ions, causing the solution to be acidic, and can undergo ion exchange reaction with metal ions to generate corresponding metal salts.
The compound contains a conjugated system and has a characteristic absorption peak in the ultraviolet-visible region, which can be used for qualitative and quantitative analysis. Due to this property, in the field of dyes, it can be used as a dye, presenting a specific color with a conjugated structure, which has good dyeing ability for fibers and other materials, and the sulfonic acid group enhances its water solubility and affinity for fabrics, thus enhancing the dyeing effect.

This is a method for preparing disodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxanthracene-2-sulfonate. The method is as follows:
Take anthraquinone-2,4-disulfonic acid first, with an appropriate aminating agent, at a suitable temperature, pressure and in the presence of a catalyst, carry out an amination reaction, so that the (4-methyl-2-sulfophenyl) amino group is introduced at the 4th position. This process requires fine regulation of the reaction conditions. If the temperature is too high or too low, and the pressure is improper, the reaction can be deviated and the product is impure. After the amination is completed, the alkali solution, such as sodium hydroxide solution, is reacted with it through the neutralization step to form a disodium salt. During neutralization, the concentration and dosage of the alkali must be precisely controlled, otherwise the purity and yield of the product will be affected. After the
reaction is completed, through separation and purification, such as crystallization, filtration, washing, drying and other processes, pure disodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxo-anthracene-2-sulfonate can be obtained. During crystallization, the choice of solvent, temperature and time control are all related to the quality and yield of the crystal. Filtration should ensure that the filter material is suitable, washing should use an appropriate solvent, washing impurities, and the drying process temperature should not be too high to avoid product decomposition. In this way, high-quality target products can be obtained.

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This is a disodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxanthracene-2-sulfonate, which is an important compound in fine chemicals. If you want to store it properly, it must depend on its characteristics and physical and chemical properties.
This compound is quite sensitive to temperature and humidity. High temperature may cause it to decompose and deteriorate, so it should be stored in a cool place, preferably not exceeding 30 ° C. And moisture is also harmful, or it can absorb moisture and agglomerate, or even cause chemical reactions. When placed in a dry place, the relative humidity should be controlled at 40% - 60%.
In addition, this compound may react to light. Light may cause photochemical reactions to occur, which will damage its quality. Therefore, it should be stored in a light-proof device, such as a brown bottle, and placed in a dark place.
Furthermore, this compound may have certain chemical activity and cannot be mixed with oxidizing agents, reducing agents, etc. Mixing or causing violent reactions is a risk of safety. It must be stored in categories to ensure safety.
Also pay attention to the integrity of the package when storing. If the package is damaged, it is easily affected by external factors. Check the package regularly. If there is any damage, quickly move it to a new container and reseal it.
In this way, the quality and stability of disodium 1-amino-9,10-dihydro-4- [ (4-methyl-2-sulfophenyl) amino] -9,10-dioxo-anthracene-2-sulfonate can be preserved according to the above methods of cool, dry, dark, classification and inspection packaging.