What are the main uses of trimethylchlorosilane?
The main users of trimethyl silicone oil toad are related to many fields of medicine, chemical industry and daily chemistry.
In the field of medicine, it has excellent physiological inertia, lubrication and defoaming properties. The "Compendium of Materia Medica" says: "Toad has a refreshing taste, cold nature, poisonous, and has the effects of detoxification, swelling and pain relief." Trimethyl silicone oil toad preparation can help drugs more easily pass through the skin and mucous membranes, increase the absorption of drugs, and improve the efficacy of drugs. For example, external ointments and patches, adding this substance can improve the applicability and adhesion of drugs, so that the power of drugs can better reach the diseased area. In the digestive system, it can be used as a defoamer to remove excessive foam in the gastrointestinal tract and relieve abdominal distension and belching.
In the chemical field, the chemical stability and low surface tension of trimethyl silicone oil toad make it an excellent release agent, lubricant and isolator. Taking the rubber and plastics industry as an example, when the product is being formed, applying a release agent containing trimethyl silicone oil toad ingredients can make the product easily come out of the mold, and the surface is smooth, flawless, and reduce the scrap rate. In mechanical manufacturing, adding this lubricant to the parts can reduce friction, increase the smoothness of mechanical operation, and prolong the life of the equipment.
In terms of daily chemicals, it can give cosmetics a smooth feeling, improve touch and gloss. In skin care products, it can form a protective film, lock in water and moisturize, and prevent skin moisture loss. In shampoo, it can make hair soft and shiny, reducing the difficulty of combing. For example, many high-end creams and lotions are favored by consumers because of the addition of this ingredient, and users praise their skin for its good feel.
Therefore, trimethyl silicone oil toad has indispensable effects in the pharmaceutical, chemical, daily chemical and other industries, and is actually a widely used and key thing.
What are the precautions for the storage and transportation of trimethylchlorosilane?
Triethanolamine borate needs to pay attention to many matters during storage and transportation.
When it is stored, the first environment is dry. This substance is easy to deliquescent in contact with water. If the storage environment is humid, it is easy to cause it to agglomerate and deteriorate. Therefore, the warehouse must be kept dry, and the humidity should be controlled at 40% - 60%. And it should be kept away from water sources, such as sinks, water pipes and other places that are prone to moisture, and should not be stored.
Temperature is also critical. It should be stored in a cool place, and the temperature should be maintained at 5 ° C - 35 ° C. If the temperature is too high, it may cause it to decompose and reduce quality; if the temperature is too low, it may solidify, affecting subsequent use. In summer, high temperature requires cooling measures, such as air conditioning and ventilation equipment; in winter, the warehouse should be properly kept warm.
Furthermore, when storing, it must be separated from oxidants and acids. Triethanolamine borate is in contact with oxidants and is prone to violent reactions, with the risk of combustion and explosion; when mixed with acids, chemical reactions will occur, destroying its structure and performance.
As for transportation, the packaging should be tight. Make sure that the packaging is not damaged or leaked. It is often packed in sealed barrels or packaging bags. When loading and unloading, it should be handled with care to avoid collisions and drops to prevent packaging damage.
During transportation, it should be protected from sun exposure and rain. Exposure to sunlight can raise the temperature and cause material changes; rain can wet the packaging, and the material is easily damaged. Transport vehicles should be equipped with corresponding fire equipment and leakage emergency treatment equipment, just in case. Transport personnel should also be familiar with the characteristics of triethanolamine borate and emergency treatment methods, so as to ensure the safety of storage and transportation, and protect its quality from damage.
What are the hazards of trimethylchlorosilane to human health?
Trimethylpentane is commonly known as "isooctane", not "trimethylbasic alkane". Other trimethylalkanes such as trimethylhexane are similar to trimethylpentane and have similar properties. The following is an example of trimethylpentane to illustrate its harm to human health:
Trimethylpentane is a colorless, transparent liquid and is a low-toxicity category. If people inhale this substance, its vapor or fog can irritate the eyes, mucous membranes and upper respiratory tract. When inhaled at high concentrations, it may cause central nervous system suppression, resulting in headaches, dizziness, nausea, vomiting, unstable gait, ataxia and other symptoms. In severe cases, it can even lead to loss of consciousness and endanger life.
Skin contact with trimethylpentane may cause degreasing, causing dry, chapped skin and other problems. If accidentally ingested, although the short-term irritation to the gastrointestinal tract may not be very obvious, it will be absorbed into the blood through the digestive tract, which will affect various systems of the body, and may also cause adverse consequences such as central nervous system suppression.
In addition, trimethylpentane is extremely flammable. In case of open flames, hot topics or contact with oxidants, there is a danger of combustion and explosion. During its combustion process, harmful products such as carbon monoxide and carbon dioxide will be produced. If this happens in a relatively closed space, these harmful products will not only pollute the air, but also cause serious damage to human health after inhalation. Carbon monoxide may even lead to poisoning and threaten life safety.
What are the synthesis methods of trimethylchlorosilane?
There are various ways to synthesize triethylammonium bromide. One is to use bromoethane and triethylamine as raw materials and prepare it by nucleophilic substitution reaction. The method is as follows:
In the clean reaction bottle, first put an appropriate amount of triethylamine, slowly drop bromoethane, and stir at the same time. Because triethylamine is nucleophilic, the bromine atom of bromoethane is a good leaving group. When the two meet, the nitrogen atom of triethylamine nucleophilically attacks the carbon atom of bromoethane, and the bromine ion leaves, then triethylammonium bromide is formed. This reaction is mild and easy to operate. However, it is necessary to pay attention to the reaction temperature and the ratio of materials to prevent side reactions.
Second, triethylamine can be obtained by reacting ethanol and ammonia first, and then triethylamine can be reacted with bromoethane to obtain the target product. First, ethanol and ammonia are catalyzed under specific conditions with a suitable catalyst, and the two react to form triethylamine. Then the resulting triethylamine is reacted with bromoethane according to the above nucleophilic substitution method, and triethyl ammonium bromide can also be obtained. This method is a little more complicated, but the raw materials are common and easy to obtain.
There is also a method of reacting triethylammonium hydroxide with hydrobromic acid. Take triethylammonium hydroxide, slowly add hydrobromic acid, and undergo acid-base neutralization reaction to obtain triethylammonium bromide. This reaction is rapid, and the purity of the product is quite high. Only the preparation of triethylammonium hydrox
All these synthetic methods have their own advantages and disadvantages. When in practice, the best synthetic effect can be achieved by carefully selecting various factors such as the availability of raw materials, cost, and product purity.
What are the physical and chemical properties of trimethylchlorosilane?
Triethylborane is one of the organic boron compounds. Its physical and chemical properties are unique and have great application value in many fields.
In terms of physical properties, triethylborane is a colorless and transparent liquid at room temperature and pressure, with a specific odor. Its boiling point is about 95 ° C. This boiling point characteristic makes it easy to volatilize under moderate heating conditions. And the density is smaller than that of water, and it is insoluble in water, but it can be miscible with common organic solvents, such as ether and benzene, in any ratio. This solubility provides convenient conditions for its operation in organic synthesis.
From the chemical properties, triethylborane is chemically active. Particularly outstanding is its strong reducing property. For example, in organic synthesis reactions, it can reduce oxygen-containing compounds, such as aldodes and ketones, to corresponding alcohols. This is due to the electron cloud distribution between boron atoms and ethyl groups in its molecular structure, which makes it easy for boron atoms to give electrons, so as to achieve the purpose of reduction. At the same time, triethylborane is extremely sensitive to air and water. Once exposed to air, it will quickly react with oxygen and may even cause spontaneous combustion; when exposed to water, it will react violently to form boric acid and ethane products. This requires strict anhydrous and anaerobic measures to be taken when storing and using triethylborane, usually under the protection of inert gases. In addition, triethylboranes can also participate in a variety of organic reactions, such as addition reactions with unsaturated hydrocarbons, and then construct more complex organic molecular structures, which play a key role in the field of organic synthetic chemistry.