What is the main use of 7,7 '-Ureylenebis (4-Hydroxy-2-Naphthalenesulfonic Acid)?
7,7 '-Ureidobis (4-hydroxy-2-naphthalenesulfonic acid) has a wide range of uses and is used in various industrial fields.
In the dyeing and weaving industry, it is often a mordant. It can make the dye more firmly combine with the fabric fibers, help the dye to adhere evenly, make the dyeing effect good, bright and long-lasting, and not easy to fade. After the fabric is treated, the color fastness is significantly improved and it lasts for a long time.
In the preparation of pigments, it also has important functions. It can optimize the dispersion performance of pigments, so that the pigment particles are evenly distributed and prevent agglomeration. This can improve the stability and tinting power of pigments. The pigments produced are used for painting, printing, etc., and the colors are fuller and clearer.
In the field of leather processing, it can be used as a tanning agent. The auxiliary tanning agent better penetrates the leather, improves the softness, toughness and durability of the leather, and makes the leather products better quality and better touch.
In the paper industry, it is also useful. It can improve the sizing performance of paper, improve the water resistance and strength of paper, and improve the quality of paper to meet the needs of different paper products.
In conclusion, 7,7 '-urea bis (4-hydroxy-2-naphthalenesulfonic acid) plays a key role in many industrial fields, which is of great significance for improving product quality and performance.
What are the chemical properties of 7,7 '-Ureylenebis (4-Hydroxy-2-Naphthalenesulfonic Acid)
7,7 '-Ureidbis (4-hydroxy-2-naphthalenesulfonic acid) is an organic compound with unique chemical properties. It is acidic. Due to its sulfonic acid group, it can partially ionize hydrogen ions in water, showing the characteristics of acid. It can neutralize with bases to form corresponding salts and water.
The molecular structure of this compound contains a urea group and a naphthalene ring. The urea group has certain reactivity and can participate in a variety of organic reactions, such as reacting with isocyanates to form a urethane structure, which has important applications in the synthesis of polymer materials. The naphthalene ring gives it certain rigidity and stability, which affects its physical and chemical properties.
In terms of solubility, the presence of sulfonic acid groups makes it hydrophilic to a certain extent and can have a certain solubility in water. However, the existence of hydrophobic parts such as naphthalene rings in the molecule makes its solubility not very high.
Its chemical stability also has characteristics. Under normal conditions, it is relatively stable. However, when encountering extreme conditions such as strong acid, strong base or high temperature, the molecular structure may change, triggering decomposition or other chemical reactions. And because it contains multiple active groups, it can react with a variety of metal ions to form stable complexes. This property may have application value in the fields of analytical chemistry and materials science.
What is the preparation method of 7,7 '-Ureylenebis (4-Hydroxy-2-Naphthalenesulfonic Acid)
To make 7% 2C7% 27-urea double (4-hydroxy-2-naphthalenesulfonic acid), the method is as follows:
First take an appropriate amount of 4-hydroxy-2-naphthalenesulfonic acid and place it in a clean kettle. Heat slowly over a gentle fire to melt the material gradually. During this period, stir carefully to make it evenly heated.
When the material is in a suitable molten state, slowly add urea according to a certain ratio. When adding, do not speed up to avoid overreaction.
Add it, raise the heat, maintain a certain temperature in the kettle, so that the two can fully react. During this process, continue to stir to ensure that the reactants are fully integrated.
During the reaction, it is necessary to pay close attention to the changes in the kettle and observe the color, texture and other signs. After a period of time, when the reaction reaches the expected level, remove the kettle from the fire and let it cool gradually.
Wait to cool to an appropriate temperature, and dissolve the product from the kettle with a suitable solvent. Then, filter out the insoluble matter with a filter to obtain a clear liquid.
Pour this liquid into another container, adjust its pH with a specific reagent, and allow the product to slowly precipitate. The precipitated matter is filtered with filter paper, and then rinsed with an appropriate amount of clean solvent to remove impurities.
Finally, the filtered product is placed in a well-ventilated and temperature-appropriate place to dry to obtain 7% 2C7% 27-urea-bis (4-hydroxy-2-naphthalenesulfonic acid). Throughout the process, it is necessary to follow the procedures and pay attention to factors such as heat, ratio, and time to obtain a pure product.
What is the price range of 7,7 '-Ureylenebis (4-Hydroxy-2-Naphthalenesulfonic Acid) in the market?
Today, 7% 2C7 '-urea-bis (4-hydroxy-2-naphthalenesulfonic acid) is available in the market. What is its price? I should answer you in detail with the style of ancient times.
7% 2C7' -urea-bis (4-hydroxy-2-naphthalenesulfonic acid) This substance is widely used in the field of chemical industry. It can be used as a dye aid or in the process of synthesis. However, its market price often changes for many reasons.
First, the price of raw materials is the main reason. If the price of all the raw materials required for the preparation of this compound rises, the price of 7% 2C7 '-urea-bis (4-hydroxy-2-naphthalenesulfonic acid) will also rise. On the contrary, if the price of raw materials falls, its price may drop.
Second, the situation of supply and demand has a huge impact. If the market faces strong demand for this product and limited supply, the price must be high. If supply exceeds demand, merchants will sell or reduce prices to promote it.
Third, the technique of production is also related. Advanced methods can reduce costs, prices or be close to the people. If the technique is not enough, the cost will be high, and the price will be difficult to lower.
As for the price range, roughly speaking, it is between a few hundred and several thousand yuan per kilogram. If the quality is high, it is suitable for high-end areas, and the price may be close to several thousand yuan. If the ordinary quality is used for general industry, the price may be several hundred yuan per kilogram. However, this is only an approximation, and the actual price should be carefully studied according to the current market situation and the policies of the merchant.
What are the precautions during the use of 7,7 '-Ureylenebis (4-Hydroxy-2-Naphthalenesulfonic Acid)
7,7 '-Ureidobis (4-hydroxy-2-naphthalenesulfonic acid) This substance requires detailed attention during use.
The first to bear the brunt is safety protection. This substance may have certain chemical activity. When exposed, be sure to wear suitable protective equipment. For example, protect your hands with thick gloves to prevent direct contact with the skin and cause chemical burns; protect your eyes with goggles to prevent droplets from splashing in and damaging your eyes.
Furthermore, storage conditions should not be ignored. It should be placed in a dry, cool and well-ventilated place, away from fire and heat sources. If the storage environment is humid and warm, it may cause chemical changes, which will damage quality and performance.
When using, accurate measurement is essential. It must be measured with accurate measuring tools according to the specific requirements of the experiment or production, and the dosage must not be increased or decreased at will, so as not to affect the final effect. And the operation process should be carried out in the fume hood, so that the harmful gases that may be generated can be dissipated in time to protect the health of the operator.
In addition, after use, the disposal of the residue and utensils is also determined. The residual material should not be discarded at will, and should be properly disposed of in accordance with relevant environmental regulations; the utensils used should be cleaned in time to remove the residue for next use.
When using 7,7 '-urea bis (4-hydroxy-2-naphthalenesulfonic acid), careful attention should be paid to the matters that must not be taken lightly to avoid accidents or adverse consequences.