5-Bromo-3-fluoropyridine-2-carbonitrile

5-O-3-O powder to its -2-methyl ether is a material with special physical properties. Such properties also have their own unique properties among the general substances described in "Tiangong Materials".
First of all, its shape, 5-O-3-O powder to its -2-methyl ether is often a fine powder, and the ground is clear and scattered, just like the fall of autumn rain. The color is mostly white, such as the first fall of winter snow, the flaw is flawed, and there are few colors.
The dissolution of this material in water is special. In normal water, its dissolution rate is high, and it needs to be fully mixed before it can be dispersed. However, if the degree of water is increased, its solubility is increased, and it can be conveniently dissolved in water to form a homogeneous liquid. And the solution it forms has a certain viscosity, like a liquid, and can adhere to the surface of other objects. This viscosity is also useful in many applications.
Furthermore, its density is also special. Compared with ordinary powder, the density of 5-3-1 powder is slightly higher than that of 2-methyl ether. When placed in the hand, it can feel that it has a certain weight, but it is not heavy. Under the pressure, this product also exhibits special properties. When the powder is added to a certain degree, it will gradually transform and form a new shape. If the degree of stability increases, it may decompose and equalize, and its physical shape will also be fundamentally changed.
Therefore, 5-3-powder to its 2-methyl ether has its own physical properties such as powder shape, special solubility, specific density and transformation. It has a place in general materials. The fields of engineering and material distribution provide special materials.

To make 5% alcohol, 3% liquid to 2 methyl ether, there are three methods, each method has its own reasons, and each has its own advantages and disadvantages. The details are as follows:
First, the method of etherification. Take the amount of alcohol, add catalytic alcohol, such as sulfuric acid, and control the degree and force of its reaction. The reaction of alcohol and sulfuric acid phase can produce methyl ether. The inverse formula is roughly as follows: 2ROH → R 2O O + H 2O O (R + alkyl, this is methyl). The advantage of this method is that the raw material is easy to use, and the principle of inverse is clear and easy to control. However, there are also drawbacks. Sulfuric acid has low corrosion property. The operation needs to be careful, and the reverse processing is difficult. It needs to be removed and lifted in multiple steps.
Second, the method of water is used. Compounds containing alkyl groups, such as methanol. Methanol can generate methyl ether from water under the appropriate catalysis method. The reverse is roughly: 2CH 🥰 OH → CH 🥰 OCH 🥰 + H ² O. In this way, the chemical raw materials of methanol are often cheap and easy to obtain. And if the catalysis method is used properly, the reverse efficiency can be high. However, there are also disadvantages. The reverse part requires fine catalysis, and the regeneration process of catalysis is not good, and the quality of the product is not high.
Third, the method of synthesizing the product by the chemical phase. Raw materials, such as carbon monoxide, under specific catalytic conditions, and under specific catalytic conditions, methanol is first generated from carbon monoxide, and the methanol is then reversed to obtain methyl ether in one step. The reverse process is completed in multiple steps. The advantage of this method is that the source of synthetic gas can be used, and the source of gas can be efficiently utilized. On the contrary, the efficiency of gas and gas is high. However, its high demand for gas is high, the investment is large, and the control of gas is large, and the control system of fine gas is required.
The production of 5% of gas and 3% of liquid to the methyl ether of 2 is short of each of the above three methods, which requires multiple factors such as the demand for gas, the extraction of raw materials, the consideration of cost, and the production of gas.

5%, 3 flow to it, and 2 methyl ether, each of these three things has its own use.
Methyl ether is also used for chemical reactions, and its main use is more. First, it can be used as fuel. The properties of methyl ether are similar to liquefied petroleum, which is similar to that of liquefied petroleum, and the amount of pollutants generated is less, which is suitable for today's security needs. As a fuel, in terms of steam power and other aspects, it may reduce environmental pollution, and its storage is also convenient, and it can be used as an energy source.
Second, methyl ether is also important in the field of chemical synthesis. It can be used in the synthesis of many other chemical compounds. For example, from a specific chemical reaction, with methyl ether as the starting material, some chemical compounds can be obtained. These compounds may be used in manufacturing, manufacturing, or as an important part of the synthesis of polymer materials, which is of great importance to the chemical industry.
Third, methyl ether can be used in refrigeration. Its physical rationality is appropriate, and in the process of evaporation and condensation, it can effectively shift the amount of energy to the purpose of refrigeration. Compared with the refrigeration of methyl ether, some characteristics of methyl ether may be better, which can improve the efficiency of the refrigeration system to a certain extent, and the destruction effect of ozone is small, which is more in line with the concept of sustainable development. Therefore, methyl ether has important uses in many aspects such as fuel, chemical synthesis, cooling, etc., and it plays an indispensable role in today's industrial life.

Those who have mercury are strong and poisonous, and they should be cautious when hiding it and losing it.
When storing mercury, the first thing to pay attention to is its utensils. It must be filled with strong utensils, and there should be no leakage in the slightest. Because of its mass flow, it is easy to escape. If there is a slight gap in the utensils, the mercury gas will gradually vent, and it will be dangerous for a long time. And mercury is easy to be contaminated with various things, so the utensils hidden should be clean and free of impurities, and should not be mixed with other things to prevent deterioration.
Furthermore, where mercury is stored, it should be shady and cool, avoiding the sun and avoiding heat. Heat is easy to evaporate mercury and disperse in the air. If people absorb it, their organs will be invaded, and diseases will occur. Therefore, it is often placed in a secluded place, so that it is not disturbed by the heat.
As for the transmission of mercury, the operator must be cautious. Clean his hands first, and do not let the mercury stain his body. The way of transportation should be steady and slow, and it should not be shaken to prevent the mercury from leaving the body. And it should be guarded by someone nearby. If there is an accident, it can be disposed of immediately.
In addition, you should also pay attention to the place where the mercury is transported. Do not let the surrounding things come into contact with mercury to avoid pollution. If the mercury is accidentally released, cover it with sulfur quickly, so that it can be turned into a non-toxic thing, and then clean it up. Don't ignore it.
The possession and loss of mercury is related to life and must not be ignored. A little carelessness will harm oneself and even everyone. Therefore, everything needs to be done according to reason in order to be safe.

In today's world, in the market, there are quite a few discussions about the price of the second-class vegetables with five baht of money and three taels of money. In the past, the rules of the market changed, and the prices changed, so it cannot be generalized.
I have heard of the ancient market, the prices changed with the abundance of years, the wide and narrow geographical area, and the situation of supply and demand. If the weather is smooth, the grain is abundant, and the genus of fruits and vegetables, the price may be slightly cheaper; in case of floods and droughts, the harvest is meager, and the price of all things will increase.
As for the second-class vegetables, if they are suitable for planting in the land, widely planted, and when they are in the season of abundant production, the common people can get them, and their price may be between five baht and one or two. Due to the large output, the supply exceeds the demand, and the merchants want to sell their goods quickly, so the price cannot be high.
However, if the land capacity is limited, the planting is difficult, and when the green and yellow are not available, the second-class vegetables are rarely seen in the city. There are many applicants and few suppliers. The price may increase to four or five yuan, which is also unknown.
It is also considered that the merchants are at home, and the pricing is also related to the cost. If the purchase is far away, the transportation fee is too large, or it needs to be added to the price. And the operating expenses, such as the leasing of the store and the remuneration of the helpers, are all considered. So although they are both second-class vegetables, their prices can fluctuate between five baht and five yuan in different places and at different times.
The price of things in the market is like a wave in the water, fluctuating with many causes and conditions. To know the exact number, you must carefully observe the conditions of the day, the place, and the personnel at that time before you can get a rough idea.