Sodium 4-Hydroxybenzene Sulfoate(Dihydrate)

This is about the chemical structure of "sodium 4-hydroxybenzenesulfonate (dihydrate) ". Sodium 4-hydroxybenzenesulfonate (dihydrate) has a unique chemical structure. The benzene ring is the base, and in the counterposition of the benzene ring, a hydroxy group (-OH) is attached to the sodium monosulfonate group (-SO 🥰 Na). This hydroxyl group has active chemical properties and can participate in many chemical reactions, such as esterification and substitution. The sodium sulfonate group, due to the ionic nature of sodium, makes the compound have good solubility in water. As for the state of the dihydrate, there are two molecules of crystal water combined with the main structure. The existence of this crystal water affects the physical properties of the compound, such as melting point and stability. The chemical structure of sodium 4-hydroxybenzenesulfonate (dihydrate) is composed of benzene ring, hydroxyl group, sodium sulfonate group and crystal water. The chemical and physical properties of 4-hydroxybenzenesulfonate (dihydrate) are determined by the interaction of various parts.

Sodium and 4-hydroxybenzene sulfonate (dihydrate) are widely used. In the industrial field, it is often used as a dye aid. Because of its specific chemical properties, the cover can help the dye better adhere to the fabric, making the dyeing effect uniform and firm. The freshness and durability of the color depend on this, which is indispensable in the textile printing and dyeing industry. In the pharmaceutical industry, it also has its uses. It can be used as an intermediate in drug synthesis and participates in the construction of many drug molecules. Its chemical structure can be modified by specific reactions to prepare compounds with therapeutic effects, or used as an additive in pharmaceutical preparations to stabilize drug components and ensure drug quality and efficacy. It can also be seen in the field of daily chemical products. In some detergents or cleaning products, it can enhance the decontamination ability. With its affinity and dispersion of stains, it can effectively decompose and remove all kinds of dirt, making the cleaning effect better and making the surface of the object as clean as new. Furthermore, in scientific research experiments, because of its stable chemical properties, it is often used as a standard reagent. Scientists rely on its precise characteristics to calibrate instruments and verify methods to lay the foundation for the accuracy and reliability of scientific research. From this point of view, sodium and 4-hydroxybenzene sulfonate (dihydrate) play an important role in various fields and have far-reaching impact.

Sodium 4-hydroxybenzenesulfonate (dihydrate), when storing, many matters must not be ignored. First, pay attention to the control of temperature and humidity. This substance should be stored in a cool, dry place. If the temperature is high, the dihydrate may lose its crystal water, causing its chemical morphology to change and affecting its performance. If the humidity is too high, or cause it to deliquescence, it will not only make it inconvenient to use, but also cause chemical reactions and damage its quality. Second, avoid co-storage with incompatible substances. This compound has specific chemical properties, and when it encounters strong oxidants, strong acids, etc., it may react violently and cause danger. Therefore, when arranging storage, it is necessary to check its chemical properties in detail and separate it from the taboo items to ensure safety. Third, packaging is also an important section. A well-sealed packaging material must be used to prevent the intrusion of external water vapor, air, etc. And the packaging should be sturdy and durable, able to resist collision and extrusion during handling and storage, and avoid material leakage caused by package damage. Fourth, the place of storage should be clearly marked. The name "Sodium 4-Hydroxybenzene Sulfonate (Dihydrate) " and related warning signs, such as moisture-proof, heat-proof, and keeping away from certain substances, etc., enable warehouse managers to know their characteristics and precautions at a glance. When operating, follow regulations to ensure the stability and safety of substances.

The physical properties of sodium and 4-hydroxybenzene sulfonate (dihydrate) are particularly important. The appearance of this compound is often white crystalline, and its texture is delicate, like frost and snow. Under normal temperature and pressure, it is quite stable, and it may encounter hot topics, or there is a risk of decomposition. When it comes to solubility, it dissolves very well in water, just like salt dissolves in water, quickly and smoothly, because there are hydrophilic groups in its structure, which are in harmony with water molecules. Its solution is neutral or slightly alkaline, and if it is measured with precision, it can be known that its pH value is between 7 and 8. Furthermore, the melting point of this compound is quite high, and a specific high temperature is required to make it from solid to liquid. The exact value of its melting point varies according to the degree of purification and the method of measurement, roughly between hundreds of degrees. The boiling point is difficult to find an exact constant value due to the decomposition of the heating process. Its density is also one of the physical properties. Compared with water, it is slightly heavier, and its texture is compact. In the same kind of compounds, the density value also has its own unique range. These physical properties are important in the fields of chemical industry, medicine, etc., and should be well known to those who use this material.

The method of making sodium 4-hydroxybenzenesulfonate (dihydrate), the ancient chemical development, has the following. First, use p-hydroxybenzoic acid as the starting material. First take an appropriate amount of p-hydroxybenzoic acid, put it in the reactor, add an appropriate amount of water, so that it dissolves into a uniform liquid. Then slowly add sodium sulfite, the ratio of the two needs to be precisely prepared, with a slight excess of sodium sulfite as the best, to make the reaction complete. Heat up to a certain extent, usually between 60 and 80 degrees Celsius, and continue to stir at this temperature to make the reaction fully proceed. After several hours, when the reaction is completed, the resulting liquid is cooled, and crystals can be seen to precipitate, which is the crude product of sodium 4-hydroxybenzene sulfonate (dihydrate). Complex with the method of recrystallization, use an appropriate amount of water or ethanol-water mixed solvent to purify the crude product, and obtain a pure product. Second, use phenol as the starting material. First, the phenol is co-heated with concentrated sulfuric acid to perform a sulfonation reaction. Put the phenol and concentrated sulfuric acid into the reaction vessel in a specific ratio and heat it at 100-120 degrees Celsius to make the phenol sulfonate to form p-hydroxybenzene sulfuric acid. After the sulfonation is completed and slightly cooled, the sodium hydroxide solution is slowly added to neutralize the acid and adjust it to a suitable pH value to convert the p-hydroxybenzenesulfonic acid into sodium 4-hydroxybenzenesulfonic acid. After concentration and cooling crystallization, sodium 4-hydroxybenzenesulfonic acid (dihydrate) is obtained. The purity of the product can also be further improved by recrystallization. Or, use p-aminophenol as a raw material. First, the p-aminophenol is reacted with sodium nitrite and sulfuric acid to undergo diazotization to form a diazosalt. Then the diazosalt is reacted with sodium sulfite, and through a series of conversions, sodium 4-hydroxybenzenesulfonic acid is formed, and then the dihydrate is obtained after treatment. Each of these methods has its own advantages and disadvantages, and should be selected according to the actual situation, such as the availability of raw materials, cost, and product purity requirements.