2-%E6%B0%B0%E5%9F%BA%E8%8B%AF%E9%85%9A, also known as fairy grass, its main uses are quite extensive.

fairy grass tastes refreshing, hot, toxic, and belongs to the kidney, liver, and spleen meridians. In the field of traditional medicine, fairy grass is the first to replenish the effect of kidney yang. For many diseases caused by kidney yang deficiency, such as impotence and cold, frequent urination, it has significant conditioning power. Kidney yang is the foundation of human body yang. If the kidney yang is insufficient, men are prone to sexual dysfunction. Flower grass can warm the kidney yang, stimulate the vitality of the kidney, improve impotence, semen cooling, etc.; and can enhance the gasification function of the kidney. It is also effective for urinary frequency, enuresis, and other diseases that cannot be fixed due to weak kidney yang.
Curculigo also has the ability to strengthen muscles and bones. For cold pain in the waist and knees, weakness of muscles and bones, etc., it can play the role of warming meridians and strengthening muscles and bones. People to the middle-aged and elderly, or due to the invasion of wind cold and dampness evil, or due to liver and kidney deficiency, often cause pain in the waist and knees, and limited movement. Curculigo can nourish the kidneys and yang, nourish the muscles and bones, dispel the evil of cold and dampness, thereby relieving pain, enhancing the flexibility and strength of the muscles and bones, and improving the ability to move the limbs.
In addition, Curculigo also has the effect of removing cold and dampness. For cold and dampness pain, such as joint pain, unfavorable flexion and extension, and those accompanied by cold and dampness, grass can rely on its warm nature to disperse cold and dampness, clear joints, and reduce pain symptoms. In some spleen and stomach diseases such as abdominal cold pain and diarrhea caused by cold and dampness trapping the spleen, grass restores the normal transportation and transportation functions of the spleen and stomach, and improves abdominal pain, diarrhea and other discomforts.
However, grass is toxic, so be careful when using it. When following the doctor's advice, strictly control the dose, and do not take it at will to avoid adverse reactions such as poisoning.

2-% hydroxypyridine, also known as α-hydroxypyridine, is an important organic compound. Its physical properties are unique and it is widely used in chemical industry, medicine and other fields. The following details its physical properties:
1. ** Appearance and Properties **: Under normal conditions, 2-hydroxypyridine is a white to light yellow crystalline powder, or a needle-like crystal. This appearance characteristic makes it easy to identify and distinguish in practical applications. Its crystal structure is regular, giving it specific physical and chemical stability.
2. ** Melting Point and Boiling Point **: The melting point is between 107-110 ° C, and the boiling point is about 280 ° C. The relatively high melting point and boiling point indicate that the intermolecular force is strong. The melting point determines the temperature conditions for the substance to change from solid to liquid. In specific production and experimental links, the reaction process and the state of the substance can be controlled accordingly. The boiling point is related to its volatility in high temperature environments. A higher boiling point means that it is relatively stable under general conditions and is not easy to volatilize.
3. ** Solubility **: 2-hydroxypyridine is soluble in a variety of polar organic solvents such as water, ethanol, and ether. This good solubility is derived from the hydrophilicity of the hydroxyl group in its molecular structure and the interaction between the pyridine ring and the organic solvent molecule. In drug development, its solubility is helpful for the formulation design of drugs, making drugs more easily absorbed by the human body. In chemical synthesis reactions, suitable solvents can promote the smooth progress of the reaction.
4. ** Odor and taste **: 2-hydroxypyridine has a weak pyridine-like odor and a slightly bitter taste. Odor and taste, as one of the physical properties of substances, need to be paid attention to in actual operation and use. Weak odor indicates that its volatility is relatively low, but its special odor may still be detected in a poorly ventilated environment.
5. ** Density **: Its density is about 1.22 g/cm ³. Density, as an inherent property of substances, is of great significance in processes involving the measurement, separation and mixing of substances. For example, in chemical production, the dosage and concentration of substances can be accurately calculated based on density to ensure the accurate progress of the reaction.

2-Hydroxypyridine, also known as α-Hydroxypyridine, is an important organic compound. It has many unique chemical properties and is widely used in many fields.
In terms of acid-base properties, in the molecule of 2-Hydroxypyridine, the oxygen atom of the hydroxyl group has a lone pair of electrons, which can accept protons and is weakly basic; at the same time, the hydrogen atom of the hydroxyl group can dissociate protons, making the compound weakly acidic. This amphoteric property allows 2-Hydroxypyridine to react with acids and bases to form corresponding salts under specific conditions. For example, in the case of strong acids, the hydroxyoxygen atoms bind protons to form positively charged ions; in the case of strong bases, the hydroxyhydrogen atoms dissociate to form negatively charged ions.
The conjugation system of 2-hydroxypyridine also has a great influence on its chemical properties. There is electron delocalization between the pyridine ring and the hydroxyl group, resulting in a decrease in the electron cloud density of the oxygen atom in the hydroxyl group and an increase in the acidity of the hydroxyl hydrogen atom. This conjugation effect also makes 2-hydroxypyridine stable to a certain extent. In some chemical reactions, it can be used as an electron donor or receiver to participate in the reaction.
In addition, the activity of nucleophilic substitution of 2-hydroxypyridine is also high. Due to the uneven distribution of the electron cloud of the pyridine ring, the density of the adjacent and para-electron clouds of the nitrogen atom is relatively low, making it vulnerable to the attack of The presence of hydroxyl groups further affects the distribution of electron clouds on the ring, making specific positions more prone to nucleophilic substitution reactions. For example, when reacting with halogenated hydrocarbons, the lone pair electrons of hydroxyl oxygen atoms can attack the carbon atoms of halogenated hydrocarbons, forming new carbon-oxygen bonds and forming ether derivatives.
In redox reactions, 2-hydroxypyridine can be oxidized by specific oxidants, and hydroxyl groups may be converted into other functional groups such as carbonyl groups; it can also be reduced under certain conditions, and the pyridine ring or hydroxyl group undergoes corresponding reduction changes. The chemical properties of 2-hydroxypyridine are rich and diverse, which lay the foundation for its wide application in organic synthesis, medicinal chemistry, materials science and other fields, and are of great significance for promoting the development of related fields.

The method of making 2-% pyridinone is based on the ancient method.
First take the amount of pyridine and place it in the kettle. The kettle should be used to fix the defects. And, add the base of the fine, this is the best way to ensure the best effect of the reaction. For the base, such as a specific alcohol derivative, the ratio should be based on the ancient method, and there should be no slight difference.
Add to the fire, the size of the fire, and the slight wave of the things in the kettle. Do not make the fire fierce, cause the reaction or reverse disorder. In the future, it is necessary to use bamboo chopsticks or sticks without mixing, so that the mixture in the kettle is uniform, and promote the reaction and profit.
When the color of the kettle is slightly melted, it is dark, and the heat can be slightly heated to make the fire slightly more prosperous, but it still needs to be determined. Mix it for a few hours, according to the ancient method, and it must not be stopped or delayed early.
It can be thick and thick in the kettle, and the taste has also been changed. This is the completion of the process. Then the fire is withdrawn, and the contents of the kettle are naturally cold. Cold, to cloth it, to remove it, the first product can be obtained.
The first product still needs to be refined in one step, using the extraction of the ancient method, and it should be dissolved, and reverse extraction to improve its quality. Extraction of oil, by steaming method, to remove the dissolution of more oil, can be obtained high of 2-% of the alkyl pyridone. The whole process, need to be tolerant and not forced, follow the ancient method, can get good products.

2-% hydroxypropyl guar gum is a commonly used thickener and stabilizer. During the application process, the following things should be paid attention to:
The first priority is safe to use. Although this substance is generally considered safe, direct contact with the skin and eyes should still be avoided when handling. In case of inadvertent contact, rinse with plenty of water immediately. If you feel unwell, be sure to seek medical attention in time. And it should be properly stored in a dry, cool and well-ventilated place, away from fire and heat sources, to prevent deterioration or cause safety accidents.
In addition, the dosage is accurate. When using, the dosage needs to be precisely controlled according to specific uses and needs. If the dosage is too small, it may be difficult to achieve the expected thickening and stabilization effect; if the dosage is too large, the system may be too viscous, affecting the performance of use, or increasing the cost. For example, in food processing, excessive use may cause poor taste and affect the quality of the product.
Then dissolve fully. 2-% hydroxypropyl guar gum needs to be fully dissolved before use. When dissolving, it should be added slowly and stirred continuously to promote uniform dispersion and dissolution. If the dissolution is not sufficient, or the appearance of agglomeration and agglomeration affects its function. And different solvents may have different solubility, and the appropriate solvent and dissolution conditions should be selected according to the actual situation.
Another compatibility problem. When used in combination with other substances, it is necessary to pay attention to their compatibility. Certain chemicals may react with them, affecting their performance and even forming harmful substances. In cosmetic formulations, improper compatibility with specific preservatives or surfactants may cause system instability and shorten the shelf life of the product.
In addition, the quality of 2-% hydroxypropyl guar gum from different sources and batches may vary. Before use, it should be quality tested, such as viscosity, purity and other indicators, to ensure that it meets the requirements of use, so as not to affect the quality and performance of the final product.