Dimethyl Succinate(DMS)

Dimethyl silicone oil (DMS) is widely used and effective in various fields. In the industrial field, it is an excellent lubricant. Because of its low surface tension and high lubricity, it can reduce friction between mechanical parts, reduce wear and tear, and increase the efficiency and life of mechanical operation. For example, all kinds of precision instruments and high-speed equipment, applying dimethyl silicone oil can smooth its operation and ensure its long-term stability. In the chemical industry, it is also a commonly used defoamer. It can quickly disperse in the foam liquid, reduce the surface tension of the foam film, and cause foam bursting. In fermentation, coating, papermaking and other processes, foam disturbance often exists, and dimethyl silicone oil can solve this worry and ensure smooth production. In the field of medicine, the effect is also significant. It can be used as a medicinal excipient, such as a lubricant for tablets, to aid in drug molding and demoulding, and is harmless to the human body. In surgery, it can be used as an anti-adhesion material, applied to surgical wounds, which can block the adhesion between tissues and promote wound healing. In the cosmetic industry, it is also indispensable. Because of its good emollient and breathable properties, it can make the skin soft and smooth without greasy feeling. Often added to creams and lotions to increase the sense of quality and skin care. In summary, dimethyl silicone oil, with its unique properties, plays a key role in industry, chemical industry, medicine, cosmetics, and many other aspects, contributing significantly to the development of various industries.

Dimethyl silicone oil (DMS), its physical and chemical properties are particularly important, and it is related to many applications. First of all, its physical properties. Dimethyl silicone oil is a colorless and transparent oily liquid at room temperature, with a uniform texture and a viscosity that can vary with the degree of polymerization. Its viscosity range is wide, either dilute as water or thick as paste, which can meet different needs. The surface tension of this substance is very low, about 20-21mN/m, so it has good wettability and can be easily spread on the surface of many objects. And it has good defoaming properties. It can quickly eliminate foam in liquid systems, due to its low surface tension and high surface activity. Its boiling point is quite high, usually reaching more than 300 ° C, while its freezing point is very low, mostly below -50 ° C. Such a wide temperature range allows it to maintain a stable state in different temperature environments. Second time on its chemical properties. Dimethyl silicone oil is very chemically stable. Under normal conditions, it is resistant to acids, bases and most chemical reagents, and it is not easy to react with it. However, under extreme conditions of strong acids and alkalis and high temperatures, its structure may change. Its oxidation resistance is also excellent, and it can be exposed to air for a long time without being oxidized. This property makes it effective in many industrial scenarios and daily necessities for a long time. Furthermore, dimethyl silicone oil is biologically inert and does not easily cause biochemical reactions in living organisms, so it is also used in medicine, food and other fields. For example, in external preparations for medicine, it can be used as a protective agent; in the food industry, it can be used as a defoamer and a mold release agent. From this perspective, dimethyl silicone oil is indispensable in many industries such as chemical industry, machinery, electronics, medicine, food, etc. It is an important material with a wide range of uses.

Dimethylsilicone oil (DMS) is one of the silicone compounds, and its preparation method is exquisite and has multiple paths. One is based on dimethyl dichlorosilane, which is obtained by hydrolysis and polycondensation. Dimethyl dichlorosilane is placed in an appropriate amount of water, and the hydrolysis reaction occurs immediately. Among them, the chlorine atom is replaced by a hydroxyl group, and then it becomes dimethyl silica glycol. The hydrolysis process requires attention to the amount of water, the reaction temperature and duration. After hydrolysis, the polycondensation reaction is repeated, and the hydroxy groups between the silica glycol molecules are dehydrated and condensed by the force of catalysts, such as sulfuric acid and hydrochloric acid, and the long-chain polydimethylsiloxane is present, which is the main component of dimethyl silicone oil. The product made in this way is of good quality, and the length and structure of the molecular chain can be controlled. It is commonly used in industrial production. The second is to start with silicon powder and chloromethane. First, the silicon powder and chloromethane are reacted at high temperature and under the condition of a catalyst to produce a mixture of methyl chlorosilane. Among them, the main product is dimethyl dichlorosilane, which also contains other methyl chlorosilane. The mixture is then distilled and purified to obtain high-purity dimethyl dichlorosilane, and then dimethyl silicone oil is prepared by the above-mentioned hydrolysis and polycondensation method. The raw material of this route is easy to obtain, but the reaction conditions are harsh and the equipment requirements are quite high. Another one uses hexamethyldisiloxane (MM) as the raw material. Under the action of the catalyst, MM can be ring-opening polymerized to obtain dimethyl silicone oil. This catalyst is often acidic or alkaline. This approach is mild in reaction and easy to operate and control, but the cost of raw materials is high. It is used in the preparation of specific quality or small-scale production. All these production methods have their own advantages and disadvantages. According to actual needs, such as product quality, cost, output and other factors, choose the good one and use it to produce high-quality dimethyl silicone oil suitable for different fields.

The price of dimethyl silicone oil (DMS) in the market often varies depending on the quality, quantity, and current situation. If the quality is high and the quantity is large, the price may be slightly higher; if the quality is average and the quantity is small, the price may be slightly lower. In the market, the price of ordinary grade DMS is about tens to hundreds of yuan per kilogram. If it is high purity or special grade, the price may exceed 1,000 yuan per kilogram. Looking at the market conditions in the past, its price fluctuates from time to time. The supply and demand of the market are very dependent. If there are many needs and few supply, the price will rise; if the supply exceeds the demand, the price will be depressed. And the price of raw materials and labor costs change, which is also the cause of price movement. In order to know the price of DMS, you should consult all merchants, compare its price, and observe its quality, so that you can get a suitable price, and you will have little to lose.

Dimethylmercury (DMS) is a highly toxic substance, and it needs to be used with extreme caution. Many precautions must not be forgotten. The first thing to pay attention to is comprehensive protection. Because of its extreme toxicity, very small exposure may cause serious poisoning. Therefore, professional protective equipment must be worn during operation, such as airtight protective clothing, protective gloves, protective masks, etc., and the protective equipment used must ensure high quality and good fit to prevent leakage. Furthermore, the operating environment is very important. It should be in a well-ventilated specialized laboratory with high-efficiency ventilation facilities to discharge the volatile gas of dimethylmercury in a timely manner, and at the same time regularly check the concentration of the substance in the operating environment to ensure that it is below the safety standard. When taking dimethylmercury, the operation must be precise and standardized. Special professional equipment must be used, and the established procedures must be strictly followed to avoid spillage. If it is accidentally spilled, immediately start the emergency response plan, evacuate personnel, seal the scene, and professionals quickly clean it up in a suitable way to prevent its spread. Storage should not be ignored. It should be placed in a special container, properly stored in a low temperature, dry, dark and ventilated place, away from fire sources, heat sources and oxidants. The storage area should be clearly marked with warning signs, and a special person must manage it, and record the entry and exit of the warehouse in detail. In addition, those involved in the operation of dimethylmercury must undergo professional training, familiar with its nature, hazards, safety operation procedures and emergency treatment methods. At the same time, the laboratory should prepare and improve emergency rescue equipment and medicines in order to respond to emergencies in a timely manner. In short, the use of dimethylmercury requires walking on thin ice, and all aspects are strictly followed to minimize risks and ensure that personnel safety and the environment are not polluted.