Quinoline, 5-chloro-1,2,3,4-tetrahydro-

"Heavenly Works and Creation" says: "Qi, although invisible and visible, is the source of life. As for the four-qi square fire, its physical properties can be investigated."
The first of the four-qi square fires is light and floating. This qi is like a flowing cloud in the sky, light and agile, always rising above. Its nature is gentle, and it nourishes all things. When the spring qi arrives, this light and floating qi pervades the world, awakening the sleeping grass and trees, urging them to germinate and germinate, which is the beginning of vitality.
The second is hot and dry. This qi is hot and dry, like the scorching sun of summer, its intensity is hot. The nature above the heat can make things dry, and it can burn forests and burn wastelands. In the matter of smelting, this gas is very useful, which can be used to convert gold and stone, and melt ore into molten iron and copper juice, and cast utensils.
The third is heavy turbidity and sinking. This gas is heavy and turbid, and often descends below. Its nature is cold and cold, like the coldness of autumn and winter. If it accumulates too much, it is prone to dampness and cold. In the earth, this gas condenses into earth and stone, carrying all things, and is the foundation of all things.
The fourth is the urgency. This gas has the nature of converging and killing, like the autumn wind sweeping away leaves. Its urgent action can make all things converge to vitality and return to silence. In phenological changes, every autumn, this qi prevails, the leaves wither, and everything is in a state of convergence.
The four qi square fires each have their own characteristics, or nourish all things, or become the work of smelting, or the foundation of all things, or the Lord converts and kills. Their interaction, in a cycle, becomes the change of all things in the world, and the beauty of nature lies in this.

"Tiangong Kaiwu" says: "Where gunpowder is pure yang and nitrate is pure yin, this universe is an illusion of gods." Today, hydrogen is related to 1, 2, 3, and 4 (suspected to refer to nitrogen, oxygen, carbon, sulfur and other elements). Carbon tetrahydride (methane) and nitrous oxide have the following chemical properties:
Carbon tetrahydride, commonly known as methane, is the simplest organic compound. Its properties are relatively stable, and it is difficult to react with strong acids, strong bases, and strong oxidants at room temperature and pressure. Under certain conditions, it can burn, react violently with oxygen, generate carbon dioxide and water, and release a lot of heat energy. This is its important characteristic as a fuel. The chemical equation of the reaction is: $CH_ {4} + 2O_ {2}\ stackrel {ignited }{=\!=\!=} CO_ {2} + 2H_ {2} O $.
Nitrous oxide, a colorless gas at room temperature, has strong oxidizing properties. It is easily decomposed into nitrogen dioxide when heated, which is a reversible reaction, $N_ {2} O_ {4}\ rightleftharpoons 2NO_ {2} $. It can react with many reducing substances and is also an important component of rocket propellant. When mixed with fuels such as metamethylhydrazine, it can spontaneously burn, release huge energy, and push the rocket into the air. This reaction is extremely violent and complex, releasing a lot of heat and gas, providing strong power for spacecraft.
In summary, carbon tetrahydride is an important feature of flammability and is mostly used in the energy field; nitrogen tetraoxide is a key property of strong oxidation and plays an important role in space propulsion.

The main use of tetrafuran is due to the important solubility in the synthesis of tetrafuran. Its special properties, soluble multi-compound, such as in the chemical reaction, can make the reaction mixture, promote the reaction.
And tetrafuran is also commonly used in the synthesis of polymer materials. In the polymerization reaction, it can be used as a reaction medium to help the polymerization of molecules to form polymers. Due to its good solubility, it can disperse and homogenize, resulting in high-performance polymer materials.
In addition, tetrafuran also has a high value in the field of polymer synthesis. In the process of chemical research, multiple reactions need to be completed in a specific dissolution environment. Tetrafuran, due to its definite chemical properties and good solubility, can provide a composite component for the synthesis of chemical molecules.
Furthermore, tetrafuran can be used in the manufacture of chemical products. In the production of molecular components, its solution can be used to clean circuit boards and other components, remove oil stains and defects, and ensure the reliability of the performance of the molecular components. And because of its reliability, it does not leave any harmful effects. In addition, tetrafuran plays an indispensable role in the multi-domain.

"Tiangong Kaiwu" says: "Where hemp has no soil and no growth. There are two methods for planting seeds and splitting." Similarly, there are various photochemical synthesis methods for tetraammonium copper (ⅱ) ions involved. The details are as follows:
First, the hydrothermal synthesis method. This is a synthesis method carried out in a closed hydrothermal system at high temperature and high pressure. Prepare a copper salt, such as copper sulfate, and an appropriate amount of ammonia water, and mix the two in a specific ratio in the reactor. After sealing the reactor, place it in a high temperature environment, such as 120 ° C - 180 ° C, and maintain it for a certain period of time, ranging from a few hours to ten hours. Under hydrothermal conditions, copper ions can fully react with ammonia molecules to gradually form tetraammonium copper (II) ions. The advantage of this method is that the reaction conditions are relatively mild, the purity of the obtained product is quite high, and the crystal structure is complete.
Second, solution synthesis method. Take an appropriate amount of copper salt, such as copper chloride, and dissolve it in water to make a uniform copper salt solution. Then, under stirring, slowly add ammonia water dropwise. This process requires close attention to the color change of the solution. At first, a copper hydroxide precipitate is formed. With the continuous dripping of ammonia water, the precipitate gradually dissolves, and finally a dark blue tetraammonium copper (II) ion solution is formed. This method is convenient to operate and easy to control, but the purity of the product may be affected by fluctuations in reaction conditions.
Third, electrochemical synthesis method. Construct an electrolytic cell with copper as the anode and an inert electrode such as platinum as the cathode. The electrolyte solution containing ammonia is injected into the electrolytic cell and a certain current is passed. The copper in the anode loses electrons and dissolves into the solution in the form of copper ions, which combine with ammonia molecules to generate tetraammonium copper (II) ions. The advantage of this method is that the reaction rate is faster, the reaction process can be controlled by adjusting the current size, but the equipment requirements are higher and the energy consumption is larger.
All synthesis methods have their own advantages and disadvantages. It is necessary to choose carefully according to actual needs and conditions to achieve the ideal synthesis effect.

Hydrogen No. 1, 2, 3, and 4 should be well attended to during storage and transportation.
The storage of hydrogen is the quality of the first heavy container. The container must be able to withstand the high pressure of hydrogen and have excellent sealing to prevent hydrogen from escaping. Because the molecules of hydrogen are very small, it is easy to seep out of containers of ordinary materials. Therefore, it must be stored in special high-pressure cylinders, low-temperature insulated containers, etc., and always check its sealing state, so that there is no leakage.
Furthermore, hydrogen is flammable and explosive, and can cause violent reactions in case of open flame, static electricity, hot topic, etc. Therefore, hydrogen storage should be kept away from fire and heat sources, and fireworks are strictly prohibited. In the place where hydrogen is stored, complete fire protection and alarm devices must be installed to prevent danger. During transportation, the vehicle should also be equipped with fire protection and anti-static facilities, and the driver must be familiar with the dangerous characteristics of hydrogen and emergency measures.
The storage environment of hydrogen should also not be ignored. It should be placed in a well-ventilated place, away from direct sunlight, because high temperature can cause the pressure of hydrogen to rise sharply, increasing its danger. And the stored hydrogen should be separated from oxidizing agents, halogens, etc., to prevent chemical reactions.
As for the transportation route, in addition to ensuring that the safety facilities of the vehicle are complete, it is also necessary to strictly abide by the traffic regulations, avoid congestion and bumps, and drive slowly and steadily to ensure that the hydrogen is safe during transportation. In case of an emergency, it should be dealt with quickly according to the established emergency plan, and it must not be panicked. In this way, the hydrogen can be safely stored and transported without risk.