2,3-dichloro-4-iodopyridine

Dicyanodiamine is an organic compound. It is stable in nature, white crystalline powder at room temperature, odorless and slightly bitter.
Dicyanodiamine has good thermal stability and high thermal decomposition temperature. Under general conditions, it is not easy to react quickly with common substances, but under specific conditions, such as high temperature and the presence of catalysts, it can exhibit unique chemical activity.
It is weakly alkaline and can react with acids to form corresponding salts. For example, when interacting with strong acids, it can form stable salts. In the field of organic synthesis, it is often used as a raw material or intermediate. Due to its molecular structure containing special nitrogen atom groups, it can participate in a variety of organic reactions, such as reacting with aldehyde substances to form compounds with special structures and properties. This reaction is often used in the preparation of specific functional materials.
In addition, dicyanodiamine has a certain ability to complex certain metal ions and can form stable complexes. This property has important uses in the separation, purification of metal ions and some catalytic systems. Due to its relatively stable structure and unique chemical properties, it is widely used in many fields such as chemical industry and materials science, providing an indispensable basis for many chemical reactions and material preparation.

The synthesis of dioxides (or when it is "dioxide") has several common methods.
First, it is combined by chemical methods. In the laboratory, various chemical raw materials can be used to chemically react according to specific steps and conditions to obtain this substance. For example, choose a suitable compound, control its temperature, pressure, or add a catalyst to promote its molecular structure to change, and then synthesize the required two oxides.
Second, by physical methods. There are physical means such as heating, cooling, evaporation, and condensation to change the state of the substance. Under specific circumstances, related elements or compounds can be combined to form oxides. If the method of vapor deposition is used, the gaseous raw materials can be polymerized into dioxide thin films on a specific substrate through physical processes.
Third, there are also ways of biosynthesis. In nature, some organisms, such as specific bacteria and algae, can use their own metabolic processes to synthesize substances containing dioxide structures in the body. Today's biotechnology is also expected to simulate this biological process, artificially manipulate biological systems, and obtain dioxide by biosynthesis.
Or it can be extracted from natural products, some ores, plants or substances containing such dioxide. By appropriate extraction, separation and purification methods, pure dioxide can be obtained. This extraction method should be based on the characteristics of raw materials, impurities, etc., and the appropriate technology, such as extraction, distillation, crystallization, etc., should be selected to obtain high-purity products.
All these synthesis methods have their own strengths and limitations. The best synthesis effect can be achieved when carefully selected according to many factors such as the amount, purity, and use of the desired product.

Carbon dioxide is an important thing involved in all things in the world, and its application range is wide.
In the transformation of heaven and earth, carbon dioxide is in the state of agricultural mulberry, and its effect is outstanding. Plants rely on it to perform photosynthesis, absorb and exhale oxygen, nourish themselves, and make Jiagu lush and fruits and vegetables prosperous. Farmers know that adjusting the amount of carbon dioxide can increase the yield of crops. In the greenhouse, replenishing this gas can promote the vitality of crops, increase their yield, and cause the cultivation of mulberry to flourish and grow.
It is also used in the world of manufacturing. When making carbonated drinks, it dissolves with carbon dioxide to form a refreshing taste. All kinds of soda in the city depend on this. And when it comes to extinguishing fires, carbon dioxide is a good tool. Its nature is non-flammable and heavy, and it can be covered with fire to extinguish flames. In houses, barns, and boats, fire-extinguishing devices often store this gas, so as not to worry, to protect things and keep people peaceful.
And in the way of medicine, carbon dioxide also has its function. Doctors use it to promote blood circulation, adjust the acid and alkali of the human body, and treat various diseases. During surgery, using it in moderation can help the doctor operate the knife and make things go smoothly.
As for the realm of entertainment and travel, on the stage, carbon dioxide is used to create a scene of clouds and mists, which increases the illusion and amazes the viewer. On the occasion of the festival, the balloon lifts off, and there is also the power of carbon dioxide, adding an atmosphere of joy.
Looking at it, we know that carbon dioxide is indispensable in agriculture, industry, medicine, and entertainment. It is related to people's livelihood.

It is difficult to cover up those who observe dioxides at the market price. The change of its price depends on many ends.
In terms of its wide use, in industrial things, there are many needs. If the chemical industry relies on it as a raw material to produce all kinds of things, this is the main source of its needs. In the field of medical treatment, saving people's lives is also indispensable. It is widely used and needs to be abundant, and the price depends on it.
However, its price also changes with the change of supply and demand. The supply is abundant. If there are many producers and there are more than enough reserves, the price may decline. If there are many covers but the demand has not increased, the seller wants to sell quickly, and has to reduce its price to attract. On the contrary, if the supply is scarce, but those who need it are still abundant, the price will rise. For example, in an extraordinary situation, medical care is urgently needed, and the producer is trapped in everything, and the supply cannot meet the demand, so the price will be high.
Furthermore, the government's policies also affect its price. The government issues regulations, or promotes its production, or restricts its use, all of which are related to the price. If the production is incentivized, the capital is aided, and the rules are lenient, the price of the product will increase or decrease. If the control is strict and the tax is increased, the cost of the producer will increase, and the price will also rise accordingly.
Competition in the market is also the main reason. The same industry competes in the market, and each applies its own techniques. Either improve its quality, or reduce its price, in order to compete for customers. If all seek to win, and compete to reduce the price, the price will be lower. However, there are those who are skilled in their skills and hold their key points, and they can set the price in the market.
As for the exact number of its price, it is difficult to judge. The time is different, the place is different, and the situation is myriad. Or at a certain time and place, the price is flat and stable; or it changes suddenly, and the difference between high and low is huge. Therefore, if you want to know the market price of dioxygen, you must carefully observe the supply and demand, policies, and competition in the place at that time, and you can get a more accurate number.

As mentioned in "Tiangong Kaiwu", the storage conditions of Erjiao sand are quite exquisite. Erjiao sand is a genus of minerals with special properties, and storage needs to be cautious.
The drying of the first environment. Because Erjiao sand is prone to moisture intrusion, if the storage place is humid and the water vapor is dense, the jiao sand is prone to deliquescence, resulting in damage to its quality and reduced efficacy. Therefore, it is necessary to choose a dry place, away from water sources, and well ventilated, so that air circulation, water vapor is difficult to gather.
The second time is the choice of containers. It is appropriate to use ceramic urns, porcelain jars and other materials to seal and store. These appliances are dense in texture and can block the intrusion of outside air and moisture. Do not use metal containers. The metal may react chemically with the kao sand, which will damage the properties of the kao sand.
Furthermore, it is also important to avoid light. Direct sunlight can heat the kao sand, and the internal structure will gradually change, affecting its inherent characteristics. Therefore, the hiding place should be hidden in a dark place, protected from sunlight.
When storing, you should also pay attention to whether there is any peculiar smell around. Erkao sand is easy to absorb odors. If the surrounding odor is strong and the kao sand is contaminated, its purity and quality will be affected.
In addition, it needs to be placed separately from other items to avoid mixing and reaction with each other, so as to protect the purity and stability of the erkao sand. In this way, it is necessary to properly store Erjiao sand to preserve its characteristics and efficacy for a long time.