4-Hydroxypyridine-sulphonic acid

4-Hydroxypyridine-sulfonic acid has a wide range of uses. In the field of medicine, it can be a key raw material for the creation of drugs. Due to its unique chemical structure and properties, it can add specific active groups to drug molecules to modify the pharmacological properties of drugs, such as enhancing the affinity of drugs to specific targets and improving their bioavailability. Therefore, in the process of new drug development, it is often used as an important starting material to help synthesize innovative drugs with high efficacy and low side effects.
In the field of materials science, 4-Hydroxypyridine-sulfonic acid also shows unique functions. It can be used to prepare special functional materials, such as some polymer materials with specific adsorption and catalytic properties. It can participate in the polymerization reaction of materials, endow materials with special properties by its own structure, or make materials have strong adsorption capacity for specific ions or molecules, which can be used in environmental monitoring, sewage treatment, etc.; or it can endow materials with catalytic activity and act as catalysts or catalytic aids in specific chemical reactions to improve reaction efficiency and selectivity.
In the field of chemical synthesis, this substance is an important intermediate. The synthesis of many complex organic compounds often relies on it as the starting point, and a series of chemical reactions build complex molecular structures. Due to the existence of pyridine rings with hydroxyl groups and sulfonic acid groups, various reactions can occur, such as nucleophilic substitution, esterification, condensation, etc. By ingeniously designing reaction routes, various high-value-added organic compounds can be synthesized, which are widely used in fine chemical product manufacturing and other industries.

4-Hydroxypyridine-sulfonic acid is one of the organic compounds. Its physical properties are unique and are described in detail as follows:
Looking at its appearance, it is often in the form of a white to off-white crystalline powder, with pure color and fine texture. Under sunlight, it may appear slightly shiny, like finely broken crystals gathered in one place.
When it comes to solubility, this substance is soluble in water, just like ice and snow melting when warm, and water molecules interact with 4-hydroxypyridine-sulfonic acid molecules to disperse uniformly in the liquid phase. However, in common organic solvents, such as ethanol and ether, the solubility is poor, like oil and water, which is difficult to blend.
Its melting point is also one of the important physical properties. When the temperature gradually rises, to a specific value, 4-hydroxypyridine-sulfonic acid will change from solid to liquid. The exact value of this melting point is a key indicator to define its purity and characteristics. It usually needs to be accurately determined to provide a basis for subsequent applications.
In addition, the stability of 4-hydroxypyridine-sulfonic acid is also worthy of attention. In a dry and clean environment at room temperature and pressure, its chemical structure and properties can be maintained for a long time. However, in case of special conditions such as high temperature, high humidity, or strong oxidants and strong bases, its structure may change, which in turn affects its physical properties.
Furthermore, 4-hydroxypyridine-sulfonic acid has certain hygroscopicity. In humid air, it is like a sponge absorbing water, which will absorb water vapor in the environment, increase its own water content, or affect its appearance and other physical properties.
In summary, the physical properties of 4-hydroxypyridine-sulfonic acid, such as appearance, solubility, melting point, stability, and hygroscopicity, are of crucial significance in its synthesis, storage, transportation, and practical application. Careful consideration is required to make good use of this compound.

The stability of the chemical properties of 4-hydroxypyridine-sulfonic acid is related to many chemical applications. Although this substance is not detailed in the ancient text of Tiangong Kaiwu, it is studied by today's chemical theory.
The stability of its chemical properties depends on the structure of the molecule. In the structure of 4-hydroxypyridine-sulfonic acid, the hydroxyl group is connected to the pyridine ring, and the sulfonic acid group is also attached to it. The hydroxyl group has a certain activity and can participate in the formation of hydrogen bonds or substitution reactions under suitable conditions. The pyridine ring is aromatic and relatively stable, but the substituents on the ring will affect the distribution of its electron cloud. The sulfonic acid group is a strong acidic group, which can ionize hydrogen ions, and because of its electron-absorbing properties, it will affect the reactivity of other parts of the molecule.
In terms of stability, under generally mild conditions, if there is no strong oxidizing agent, strong acid and base or special catalyst, 4-hydroxypyridine-sulfonic acid can maintain a certain stability. In case of high temperature, strong oxidation environment or specific nucleophilic reagents and electrophilic reagents, the molecule may react, such as the substitution of sulfonic acid groups, the oxidation of hydroxyl groups, and the addition or substitution of pyridine rings. Therefore, in general, its stability is not absolute, but varies depending on the external environmental conditions.

The production process of 4-hydroxypyridine-sulfonic acid is not detailed in ancient books, but it can be deduced according to the principles of today's chemical industry.
The method of preparation often starts with pyridine. First, pyridine is used as the group, and the sulfonic acid group is introduced through sulfonation. During sulfonation, concentrated sulfuric acid or fuming sulfuric acid is often used as the sulfonating agent. Under appropriate temperature, pressure and reaction time, the sulfonic acid group of sulfuric acid reacts with the specific position of pyridine.
However, to obtain 4-hydroxypyridine-sulfonic acid, only sulfonation is not sufficient. After pyridine is sulfonated, the step of hydroxylation is required. In this step, or with the help of a suitable hydroxylation reagent and a catalyst, a hydroxyl group is introduced into the sulfonated pyridine at a specific position.
The conditions of the reaction are crucial. If the temperature is too high, side reactions will occur and the yield will decrease; if the temperature is too low, the reaction will be slow and take a long time. The pressure also needs to be regulated, and the appropriate pressure can make the reaction material fully contact and promote the reaction. The reaction time cannot be ignored. If it is too short, the reaction will not be completed. If it is too long, it will consume resources and may cause the product to decompose.
After the reaction is completed, the product often contains impurities. Pure 4-hydroxypyridine-sulfonic acid can be obtained by separation and purification. The method of separation, or distillation, extraction, etc.; purification, or recrystallization, column chromatography, etc. Through these various processes, 4-hydroxypyridine-sulfonic acid of good quality can be obtained.

4-Hydroxypyridine-sulfonic acid, this is a special chemical substance. In terms of market price, its price fluctuates quite a lot, and it is difficult to generalize and calculate the exact number.
Cover because its price is affected by many factors. The first one is the cost of raw materials. The abundance of raw materials and the rise and fall of prices have a deep impact on the production cost of 4-hydroxypyridine-sulfonic acid. If raw materials are scarce, or prices rise due to changes in market supply and demand, the price of 4-hydroxypyridine-sulfonic acid will rise.
Furthermore, the difficulty and complexity of the production process are also related. If the production process requires high-end technology, special equipment, or strict requirements on the production environment, the cost will naturally rise, and the market price will remain high.
The market supply and demand situation is also the key. If the market demand for this product is strong and the supply is limited, the price will be upward; on the contrary, if the supply exceeds the demand, the price will inevitably decline.
In addition, 4-hydroxypyridine-sulfonic acid produced by different manufacturers, due to quality differences, the price is also different. Those with high quality, the price may be relatively high. Therefore, in order to know the exact price range of 4-hydroxypyridine-sulfonic acid, it is necessary to comprehensively consider the above factors, and it is necessary to check the real-time market conditions of chemical products in detail, or consult relevant professional suppliers, in order to obtain more accurate price information.