5,5-Dihydroxy-2,2-Dinaphthylamine-7,7-Disulphonic Acid

5% 2C5 - dihydroxy - 2% 2C2 - dinaphthalamine - 7% 2C7 - disulfonic acid, this substance is a chemical substance. Its use is quite extensive. Although it is not detailed in ancient books such as "Tiangong Kaiwu", it can be known from today's chemical knowledge.
First, in the field of dyes, this substance is often used as a dye intermediate. Due to its special chemical structure, it can be converted into many dyes with bright color and good stability through specific chemical reactions. In the past, the production of dyes was an important matter for people's livelihood, and fabric dyeing can make it beautiful and have a certain protective effect. In today's society, the textile industry still relies on such intermediates to synthesize various dyes to meet the diverse needs of the public for clothing, home textiles and other colors.
Second, in chemical analysis, it can be used as a reagent. Because its structure can react specifically with certain metal ions or compounds, it can be used to detect and identify related substances. For example, in ancient alchemy or early chemical experiments, identifying the composition of substances is a key step, and such substances with special reaction properties have their uses. Today's scientific research, industrial testing, etc., still need to use its characteristics to analyze the composition and content of substances.
Third, in the field of medical research, although ancient books have not been covered, modern studies have found that such compounds containing nitrogen, sulfonic acid groups and other structures may affect some biological activities. Researchers may use their structural modifications to develop new compounds with specific pharmacological activities, opening up new paths for drug research and development.

5% 2C5-dihydroxy-2% 2C2-dinaphthalamide-7% 2C7-disulfonic acid, this is an organic compound. Its chemical properties are unique and it has attracted much attention in many chemical fields.
This compound has acidic properties because it contains sulfonic acid groups, which can release protons under specific conditions and exhibit acidic behavior. In aqueous solution, the ionization of sulfonic acid groups can cause the solution to appear acidic and affect its chemical environment.
Furthermore, the hydroxyl and amino groups of the compound also give it specific reactivity. Hydroxyl groups can participate in esterification, etherification and other reactions, and are key reaction check points in organic synthesis. The amino group has nucleophilic properties and can react with electrophilic reagents such as halogenated hydrocarbons and acid anhydrides, expanding the possibility of chemical derivation.
The presence of naphthalene rings in its structure makes the compound have a certain conjugate system, which affects its electron cloud distribution and stability. The characteristics of the conjugate system make it possible to exhibit specific optical and electrical properties, which may have potential applications in the field of materials science.
From the perspective of spatial structure, the specific substituent distribution of molecules affects their intermolecular interactions. This may have an effect on its crystalline morphology, solubility and other physical properties. For example, the hydrophilicity of sulfonic acid groups may enhance the solubility of compounds in water; while the hydrophobic part of naphthalene rings may affect their behavior in organic phases. The chemical properties of this compound are rich and diverse, and it has the potential for further exploration and application in many fields such as organic synthesis and materials science.

5% 2C5-dihydroxy-2% 2C2-dinaphthalamide-7% 2C7-disulfonic acid, the preparation method of this substance is not detailed in ancient books, but according to today's chemical process method, it is probably as follows:
First, naphthalene is used as the initial raw material. After the sulfonation of naphthalene, it is placed in a kettle with concentrated sulfuric acid, heated to make it, and the sulfonic acid group is introduced on the naphthalene ring to obtain the genus naphthalenesulfonic acid. This step requires temperature control. If the temperature is high, it should be mixed, and if the temperature is low, it should be slowed down.
Next, the obtained naphthalene sulfonate is combined with mixed acid (a mixture of nitric acid and sulfuric acid) by nitrification, and the temperature is carefully adjusted to introduce nitro groups into the specific position of the naphthalene ring to obtain naphthalene compounds containing nitro groups and sulfonic acid groups. This step is dangerous, the mixed acid is strong and should be strong, and the procedures must be strictly followed.
Then, by reduction, the nitro group is converted to an amino group by means of a suitable reducing agent, such as iron powder, sulfide base or catalytic hydrogenation, etc., to obtain naphthalene compounds containing amino groups and sulfonic acid groups.
Then the naphthalene compound containing amino group and sulfonic acid group is coupled by oxidative coupling method. Under specific catalyst and conditions, two molecules of naphthalene compound are coupled and hydroxylated at a specific position, so 5% 2C5 -dihydroxy-2% 2C2 -dinaphthalamide-7% 2C7 -disulfonic acid is obtained. The conditions of this step are harsh, and the selection and control of catalysts are very important.
The whole process needs to be carefully handled, and each step should be completed. A suitable method must be used to separate, purify, remove impurities, and improve purity to obtain good products. Although this is a modern method, the ancient transformation techniques may be different, and the classics are lacking, making it difficult to study them in detail.

I don't know what the market price of 5% 2C5 - dihydroxy - 2% 2C2 - dinaphthalamine - 7% 2C7 - disulfonic acid is. However, although "Tiangong Kaiwu" is a strange book, most of the descriptions are the sources of various skills and products, etc., and the market price of chemical substances may be difficult to trace.
In today's world, if you want to know the price of this chemical substance, you should follow this path. Or you can go to the chemical raw material trading market to explore, where merchants gather, and all kinds of chemical materials are available. Ask the market people, or you can get their prices. Or on the Internet, there are many chemical product trading platforms. If you log on to the platform and search for the name of this product, you can see all kinds of sellers' quotations, high and low, at a glance.
Or ask experts and practitioners in the chemical industry, who have been here for a long time, are familiar with the market, and have knowledge of the price changes of various chemical substances. If you ask them, you can also get more accurate price information.
As for the text format of "Tiangong Kaiwu", it is difficult to say its price exactly. Because of the different systems of ancient and modern times, the chemical substance market today can not be described in detail in ancient books. If you want to know the details, you should ask for it in today's way.

5% 2C5 - Dihydroxy - 2% 2C2 - Dinaphthalamide - 7% 2C7 - Disulfonic Acid. When using this product, there are a number of important precautions, which should be paid attention to in detail.
First, this product has a specific chemical activity, and it must follow a strict process when operating. Do not arbitrarily change the steps to avoid deviations in chemical reactions. During operation, the temperature and humidity of the surrounding environment are also crucial, and it must be controlled within an appropriate range. Too high or too low temperature may affect its chemical properties and cause its performance to change.
Second, it is related to safety protection. This object may be irritating to a certain extent, and it must be worn with complete protective equipment, such as protective clothing, gloves and goggles, when operating. This is a necessary measure to ensure personal safety. If it accidentally touches the skin or eyes, rinse with plenty of water immediately and seek medical attention as soon as possible.
Third, the method of storage should not be ignored. Store it in a dry, cool and well-ventilated place, away from fire sources and oxidants. Due to its chemical properties, improper storage can easily lead to deterioration, or even lead to dangerous conditions. Storage containers should also be made of suitable materials to prevent corrosion and leakage.
Fourth, during use, the control of dosage must be accurate. Too much or too little dosage cannot achieve the desired effect. Before putting it into use, it is best to conduct a small-scale test to determine the best dosage to ensure the overall effect is excellent.
In short, the use of 5% 2C5-dihydroxy-2% 2C2-dinaphthalamide-7% 2C7-disulfonic acid must be carefully controlled in all aspects to ensure safety and achieve the desired effect.