What are the main uses of 1-3-butyric acid? "Tiangong Wuwu" has a lot of information, and its use is very wide.
First in the field of medicine, 1-3-butyric acid has antibacterial and anti-inflammatory effects. In ancient times, in case of razor and other diseases, it was often treated with a dressing containing this ingredient. Because it can inhibit the growth of bacteria in the mouth and help the mouth. "Materia Medica" does not have the name of 1-3-butyric acid directly, but it is used for many anti-inflammatory and muscle-building remedies, or contains the effect of this ingredient.
For the second time, it can be used as a dyeing aid for some special fabrics. In ancient dyes, in order to make the color firm and strong, 1-3-butyric acid was often added. This can promote the dense combination of dyes and fabrics, and prevent fading. The method of dyeing cloth is mentioned in the article "Tiangong Wuwu · Zhang Shi", but this acid is not specified, so it is known to be replaced by "," which has its own function.
Furthermore, it also has its use in manufacturing. In some winemaking processes, 1-3-butyric acid can be used to leaven, and the rate of leavening can affect the taste of the product. In ancient wineries, it was difficult to control the leavening of the product, or the name of the acid was unknown, but the shape of the product used its properties in its operation to make the wine taste mellow and fragrant.
In addition to the work of leather, 1-3-butyric acid can be used for leather tanning. It can make leather soft and durable, and the tanned leather is better, and it can be used for fine leather goods. In the "Kaogong", the method of making leather is clearly stated that the use of this acid, but its principle coincides.
Therefore, 1-3-butyric acid plays an important role in many fields such as ancient leather, engineering, manufacturing, and leather. The ancients may not have fully understood its essence, but they have been able to make good use of its characteristics for general benefits.

The 1-% -3-deuterium-tritium bear is also an isotope. Its physical reason is very special.
In terms of quantity, the 1-% -3-deuterium-tritium bear contains more neutrons, so the amount is less than ordinary. Ordinary atomic nuclei contain one particle, and 1-% -3-deuterium-tritium bear nuclei contain two neutrons in addition to the particle, which makes its amount less than three, which is less than one of ordinary ones.
Its boiling and melting are also less than ordinary ones. As the amount increases, the molecular force increases, resulting in the boiling and melting of 1-% -3-deuterium-tritium bears are higher than ordinary ones. The boiling temperature of ordinary atoms is low, at normal temperatures of -252.87 ° C, while the boiling temperature of 1-% -3-deuterium-tritium bears is slightly higher.
Furthermore, 1-% -3-deuterium-tritium bears are radioactive. Due to the large number of neutrons in the nucleus, the nucleus is uncertain, and it is easy to generate radioactive decay, resulting in particle energy. This radioactivity makes it important for nuclear energy and other fields, but it also needs to be properly prevented to avoid harm.
The chemical properties of 1-% -3-deuterium-tritium bears are roughly similar to those of ordinary bears, because they are all one particle, and can generate more and more particles, such as oxygen reaction to generate water. However, due to the difference in quantity, there may be differences in the rate of reaction of some atoms, which is the isotopic effect. In the reaction of atomic shift, the reaction rate of 1-% -3-deuterium-tritium bears may be slightly slower than that of ordinary bears. Therefore, 1-% -3-deuterium-tritium bears, due to their special physical properties, have important values in scientific research, nuclear energy, etc.

The chemical stability of 1-% hydrazine-3-aminobutyronitrile depends on multiple factors. Each of these two has its own unique characteristics in the field of chemistry.
First of all, hydrazine, the structure of hydrazine contains nitrogen and nitrogen single bonds, which endows it with certain activity. From the perspective of its reactivity, hydrazine is often used as a reducing agent and can react violently with many oxidants. In case of strong oxidants, it can cause the danger of combustion or even explosion, which shows the lively side of its chemical properties. However, in a specific environment, if properly stored, such as avoiding contact with oxidants, and placed in a low temperature and dry place, its stability can also be maintained.
As for 3-aminobutyronitrile, its molecular structure contains an amino group and a nitrile group. The amino group has a certain alkalinity, while the nitrile group has a unique reactivity. The two coexist in a molecule and affect each other. Under normal conditions, 3-aminobutyronitrile can maintain relative stability without specific reagents or conditions. However, when exposed to acid, alkali or high temperature, the chemical bonds in the molecule may change. In case of acid, the nitrile group can be hydrolyzed to a carboxyl group; in case of high temperature, it may initiate reactions such as rearrangement in the molecule, which indicates that its stability is not absolute.
In summary, the chemical properties of 1-% hydrazine-3-aminobutyronitrile are not absolutely stable, but vary depending on the environment, the substances contacted, and external conditions such as temperature, pH, etc. If external factors can be carefully controlled, they can be maintained in a relatively stable state for a certain period of time; however, once external conditions change, their chemical properties or active states can trigger various chemical reactions.

To make 1-ether-3-bromopropane, there are three methods.
First, 3-bromopropane and sodium alcohol are used as raw materials. Take an appropriate amount of 3-bromopropane, place it in a clean reactor, and slowly add the sodium alcohol solution. During this period, the temperature should be controlled moderately and stirred continuously to promote the reaction. When the two meet, the alkoxy group in the sodium alcohol attacks the halogenated hydrocarbon position of 3-bromopropane, and the bromine ions leave, and then form 1-ether-3-bromopropane. This reaction condition is mild, but the preparation of the raw material 3-bromopropanol may be slightly cumbersome. < Br >
Second, use allyl bromide and haloethanol as raw materials. First take allyl bromide, inject it into the reaction vessel, and then add haloethanol in proportion. Under the action of the catalyst, the double bond of allyl bromide is attacked by the nucleophilic attack of hydroxyl oxygen atoms in haloethanol, and the target product can be obtained through rearrangement and other steps. This way of raw materials is relatively easy to obtain, but the reaction process is complicated, and the catalyst dosage and reaction conditions need to be precisely controlled, otherwise the side reactions will increase and affect the purity of the product.
Third, use 1,3-dibromopropane and alcohol as raw materials. Mix 1,3-dibromopropane with alcohol in a certain proportion in the reaction device, and add a suitable base as a catalyst. The base captures the hydroxyl hydrogen in the alcohol to generate alcohol negative ions. The nucleophilic attack on the bromine atom at one end of 1,3-dibromopropane is connected to carbon, and the bromine ions are separated to obtain 1-ether-3-bromopropane. This method is common in raw materials and relatively convenient to operate. However, the product is separated or requires fine treatment to remove unreacted raw materials and by-products.
All these methods have advantages and disadvantages. It is necessary to choose carefully according to the actual situation, such as the availability of raw materials, cost, product purity requirements, etc., to achieve the ideal preparation effect.

In the storage and transportation of 1-mercury-3-bromopropanonitrile, the following matters should be paid attention to.
First, it is related to storage. Because of its certain toxicity and chemical activity, it must be stored in a cool, dry and well-ventilated place. Keep away from fire and heat sources and avoid direct sunlight to prevent its chemical properties from changing due to temperature, light and other factors, and even lead to dangerous conditions. It should be stored separately from oxidants, acids, alkalis, etc., and must not be mixed. Because these substances are in contact with it, violent chemical reactions, such as oxidation and reduction reactions, may occur, and dangerous products may be generated or explosions may be caused. At the same time, the storage place should be equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment, so as to be able to respond quickly in the event of an emergency.
Second, for transportation. Before transportation, it is necessary to ensure that the packaging is complete and well sealed to prevent leakage during transportation. When transporting, choose the appropriate means of transportation, and comply with the relevant regulations on the transportation of hazardous chemicals. Transport personnel need to undergo professional training, familiar with the nature of the substance and emergency treatment methods. During transportation, the speed and driving route should be strictly controlled, and sensitive areas such as densely populated areas and water source protection areas should be avoided. If a leak occurs during transportation, emergency measures should be taken immediately to evacuate the surrounding people, isolate the leaked contaminated area, and report to the relevant departments in a timely manner. Clean up and dispose of it in accordance with scientific methods to prevent greater harm to the environment and human body. In short, whether it is storing or transporting 1-mercury-3-bromopropanonitrile, relevant norms and requirements must be strictly followed to ensure the safety of personnel and the environment are not damaged.