1-Iodo-3,5-Dimethylbenzene

Dimethyl silicone oil is one of the organosilicon compounds with unique chemical properties and is widely used in many fields. The following are brief descriptions of its chemical properties:
First, it has excellent chemical stability. Dimethyl silicone oil is like wearing a strong armor and can resist the attack of many chemical substances. Whether it is a strong acid, such as sulfuric acid, hydrochloric acid, or a strong alkali, such as sodium hydroxide, it is difficult to chemically react. This property makes it stable in complex chemical environments. For example, it is used as an anti-corrosion coating material in chemical production, which can effectively protect equipment from chemical medium corrosion.
Second, it has good thermal stability. Like a heat-resistant warrior, dimethyl silicone oil can remain stable over a wide temperature range. It can withstand high temperatures without decomposing or oxidizing, and will not become brittle and hard even in a low temperature environment. For example, in the lubrication process of high-temperature baking equipment, or in mechanical devices in cold regions, it can function normally with this characteristic to ensure the smooth operation of the equipment.
Third, it is extremely hydrophobic. Dimethyl silicone oil and water are like two mutually exclusive parties. Its surface tension is extremely low, and it is difficult for water to spread on its surface, but to form water droplets. This property makes it very useful in the field of waterproofing. In terms of building waterproofing and fabric waterproofing, dimethyl silicone oil can be used to form an efficient waterproof layer.
Fourth, excellent oxidation resistance. In the air, dimethyl silicone oil has an anti-oxidation shield, which is not easy to react with oxygen and can maintain its own performance for a long time. This property helps to prolong the service life of products containing dimethyl silicone oil, such as adding it to cosmetics, which can prevent the product from deteriorating due to oxidation.
Fifth, good physiological inertness. Dimethyl silicone oil is like a gentle partner. When it comes into contact with organisms, it will not cause obvious physiological reactions and is quite safe. Because of this, it is widely used in medicine, food and other fields that require strict safety, such as pharmaceutical excipients and food release agents.

Dimethyl silicone oil has a wide range of main uses. In the field of medicine, dimethyl silicone oil is often used as a defoamer. In medical examinations, such as gastroscopy, if there is too much foam in the stomach, it will interfere with the field of vision and affect the observation of gastric lesions. Dimethyl silicone oil can quickly reduce the surface tension of the foam, causing it to burst and dissipate, thus clearly showing the stomach condition for doctors and helping to accurately diagnose the condition.
In the daily chemical industry, dimethyl silicone oil is a common ingredient in skin care products and cosmetics. Because it has good lubrication and moisturizing properties, it can be added to skin care products to make the skin feel smoother and more delicate. It can also form a protective film on the surface of the skin to prevent the loss of skin moisture and exert moisturizing effect. In hair care products, it can reduce the friction between the hair, make the hair soft and shiny, and not easy to tie.
In the industrial field, dimethyl silicone oil can be used as a mold release agent. In the production process of plastic products, rubber products, etc., the product needs to be taken out of the mold after molding. Dimethyl silicone oil can effectively reduce the friction between the product and the mold, make the demoulding process smoother, avoid damage and deformation of the product due to difficult demoulding, and improve the molding quality and production efficiency of the product. In addition, it is often used in electrical insulation, shock absorption, damping, etc. With its excellent electrical insulation properties and chemical stability, it provides protection for the stable operation of electrical equipment.
In the construction industry, dimethyl silicone oil can be used for waterproof treatment. Coating it on the surface of buildings can penetrate into the interior of building materials, fill tiny pores, form a waterproof layer, effectively block the erosion of buildings such as rainwater and groundwater, and prolong the service life of buildings.
To sum up, dimethyl silicone oil, with its diverse characteristics, plays an important role in many fields such as medicine, daily chemicals, industry, construction, etc., greatly facilitating people's production and life.

"Tiangong Kaiwu" has a saying: "Where gunpowder, sulfur is pure yang, and nitrate is pure yin, this universe is an illusion of gods." The main component of saltpeter is potassium nitrate, which is crucial in the preparation of ancient gunpowder. As far as disubunit mercury is concerned, it is rarely seen in many synthetic applications. Gai is extremely toxic and harmful, so it is difficult to apply to ordinary synthesis.
As for "3,5", if it refers to chemical substances such as 3,5-dinitrobenzoic acid, it can be used as an important intermediate in the field of organic synthesis. It can participate in many reactions and is used to construct more complex organic molecular structures. In drug synthesis, it is often used to prepare compounds with specific pharmacological activities.
And disubunit mercury, because it contains mercury, which is a heavy metal, is extremely toxic and can easily cause irreversible damage to organisms. Whether it is to the human nervous system, kidneys and other organs, or to the biological chain in the ecological environment, it can cause serious consequences. Therefore, in the synthesis, for safety and environmental considerations, disubunit mercury is hardly used.
In contrast, 3,5-dinitrobenzoic acid and other substances, because of their controllable reactivity and distinct structural characteristics, play an indispensable role in the synthesis of fine chemicals, pharmaceutical research and development and other fields, and play a key role in the creation of various useful substances.

The preparation method of diaminoheptyl in "Tiangong Kaiwu" has not been directly related to the ancient literature, but it can be discussed as follows from the traditional chemical process ideas and the concept of preparation of similar substances.
All methods of making things are mostly based on their properties and let it be. Diaminoheptyl is organic in nature, and its preparation can be obtained from natural things or from other physical changes.
If you look for the source from nature, look at grass, wood, gold and stone, and observe what it contains. Or something with a similar foundation can be used as a starting material. However, natural things have a variety of ingredients, and if you want to obtain pure quality, you must have a delicate method. You can first soak it in water or stain it with wine, so that it can be dissolved in the liquid, and then use the method of distillation to remove its moisture and impurities, leaving its essence.
If it is changed by other things, you should know the principles of various reactions. Organic changes are often related to combination, decomposition, and substitution. You can find things containing heptyl groups and agents containing amino groups to combine the two. When combining, the ratio of temperature, pressure, and agent needs to be studied in detail. If the temperature is too high, it may cause the decomposition of the substance; if the pressure is improper, the reaction may be difficult to proceed; if the proportion of the agent is unbalanced, it will be difficult to form the desired substance. < Br >
Or the substance containing polyfunctional groups can be gradually reacted to form an intermediate first, and then modified to add an amino group to the heptyl group. Every step of the reaction must be inspected, the product must be tested, and its by-products must be removed.
To make diaminoheptyl, although there is no clear method in ancient times, according to the principles of ancient methods, follow the chemical nature, find the natural source, control the change of the reaction, or get the way of its preparation, so as to form this substance.

Diboron-based germanium is a strange substance with many specific physical properties.
Its conductivity is different, and under specific conditions, it exhibits a semiconductor-like state. At room temperature, the conductivity is weaker than that of metals, but stronger than that of insulators. This property is derived from its internal atomic structure and electron distribution. Boron and germanium atoms bond in a specific way, and the electron cloud distribution causes some electrons to move in the lattice. Therefore, it presents semiconductor-like conductivity, which may be useful in the field of electronic device manufacturing. For example, it can be used as a special semiconductor material to optimize the performance of transistors and integrated circuits.
Thermal conductivity is also unique. Unlike common materials, the thermal conductivity of diboron-based germanium varies with temperature. At low temperatures, its thermal conductivity is high, which can effectively conduct heat; when the temperature rises, the change of thermal conductivity is not simple and linear, or due to the complex interaction between lattice vibration and electrons. This property makes it potentially useful in the field of thermal management materials. It can be used to manufacture high-efficiency heat dissipation components and ensure the stable operation of electronic equipment.
Optical properties are also eye-catching. It has special performance in light absorption and emission at specific frequencies, and may have application value in the field of optoelectronics. Or it can fabricate new photodetectors that are sensitive to specific wavebands for optical communication, optical sensing, etc. It may also be used in the manufacture of Light Emitting Diode to develop new luminescent materials to achieve special color light emission.
In terms of mechanical properties, the hardness and toughness balance of diboron-based germanium are unique. Although it is not a superhard material, its internal structure imparts a certain hardness, and at the same time it has a certain toughness, which is not easy to break. This property makes it stand out in some material application scenarios that require both hardness and toughness, such as the manufacture of special mechanical parts, wear-resistant coatings, etc.
In short, the unique physical properties of diboron-based germanium make it have application potential in many fields, which needs to be further explored and developed.