Quinoline-2-carboxaldehyde

"Tiangong Kaiwu" shows that the main use of maple is related to many fields.
Ya maple, with solid wood and delicate texture, has a wide range of uses in architectural construction. Its material can be used as a beam to support the weight of the house and make the structure stable. In furniture production, the table, chair and bed made of maple are not only sturdy and durable, but also have the beauty of natural texture, adding elegance to the room.
In the manufacture of cars and boats, maple is also indispensable. Because of its water resistance and good corrosion resistance, it can be used as a hull plate to ensure the safety of the boat; when building a car, it can be used as a key component such as a frame to enhance the firmness of the vehicle.
Maple performs well in the field of carving art. Its texture is suitable for meticulous carving, and carvers can use their skills to create exquisite patterns such as flowers, birds, insects, fish, character stories, etc. The carvings made are either ornaments or architectural decorations, all of which have high artistic value.
In addition, the skin and leaves of the branch maple may have contributed in the field of medicinal use. Although the "Tiangong Kaiwu" is not detailed, in the traditional medical knowledge system, the skin and leaves of some trees often have medicinal effects, and the branch maple may have a similar possibility, providing a potential direction for medical research. In short, the branch maple played an important role in the architecture, furniture, vehicles, boats, carvings and other aspects of the ancient life, and had a profound impact.

The color of ethyl mercury is nearly silver-white when it is pure, but it is slightly green, bright but not shining, just like the moonlight hidden in the mist, restraining its glow. At room temperature, ethyl mercury is liquid, the texture is uniform and soft, smooth and unstagnant, and when touched, it flows away flexibly, like a living being. Its body is very heavy, and it is heavier than ordinary things. If it is placed in a device, the liquid ripples, as if it contains endless secrets.
As far as its nature is concerned, ethyl mercury is very volatile, and it gradually escapes from the open place soon. And this volatile state, quietly moving, colorless and invisible, people can't feel it, but its poison quietly pervades the body. Its poison can enter the body, damage people's internal organs, confuse people's minds, and cause severe harm.
Furthermore, the reaction of ethyl mercury to various things is quite unique. When encountering precious things such as gold and silver, they attract and fuse together, like glue, making the quality of gold and silver change and lose its original state. When it encounters sulfur, it accelerates, and the two combine to transform into other things. The speed of change is amazing.
And ethyl mercury has good thermal conductivity. If it is touched with heat, the heat flow will move quickly and disperse around the body. Its electrical conductivity is also good, it can pass current, and it may be useful in electrical matters. However, due to its toxicity, it must be used with caution.
The physical properties of ethyl mercury are not only strange, but also contain hidden dangers. It is unique in the nature of things. Users should understand its nature and know its risks before they can treat it well and avoid causing trouble.

Lead and mercury have very different chemical properties and are related to many aspects. Let me tell you one by one.
The chemical properties of lead are relatively stable. Under normal conditions, it is not easy to react quickly with oxygen in the air, so it can be seen that the surface of the lead device has changed over time, but it does not rust rapidly. However, under heating conditions, lead can react with oxygen to form lead oxide. Lead can also interact with acids. When exposed to dilute sulfuric acid and hydrochloric acid, the reaction is slow, because the resulting salts, such as lead sulfate, have less solubility and cover the surface of lead, which can hinder further reactions. However, when exposed to nitric acid, lead reacts with it more violently, forming products such as lead nitrate. The common valence of lead in compounds is + 2 valence and + 4 valence. Many lead compounds have different properties.
Mercury, commonly known as mercury, is the only metal that exists in liquid form at room temperature and pressure. Its chemical properties are also unique. Although mercury is relatively stable chemically, it can react rapidly with sulfur powder, and the two can be mixed without heating to form mercury sulfide. This reaction is often used to treat mercury spills. Mercury can react with oxygen under heating conditions to form mercury oxide, which is easily decomposed into mercury and oxygen when heated. This reaction shows the reversibility of its chemical changes. Mercury can form amalgams with a variety of metals, namely amalgam, which is also used in metallurgy and other fields. Mercury compounds with different valence states have quite different properties, such as mercury chloride is highly toxic, while mercurous chloride is relatively weak.
The chemical properties of lead and mercury are both stable and can undergo various reactions under specific conditions. In the field of chemistry, the exploration of their properties can lay the foundation for many applications and understandings.

Mercury is a highly poisonous thing, but in the past there were also those who used it as a medicinal stone, which is wrong. As for the synthesis of realgar, the ancients also had various methods.
First, "Baopuzi" says: "Realgar should be the one that comes from Wudu Mountain, pure but not miscellaneous, its red like a chicken crown, and those who are bright leaves can be used for ears. First turn saltpeter into water, then condense it." This is the method of combining saltpeter and realgar. Saltpeter, the help of fire, use it to turn realgar into water, and then condense it, or change its nature.
Second, there are also those who combine realgar with turpentine. Turpentine, collected from ancient pine, is mild in nature. Refining realgar together with turpentine, the temperature of turpentine may slow down the dryness of realgar. The ancients believed that turpentine has the effect of nourishing the body, and it can be combined with realgar, or it can remove the harm of realgar and save its benefits.
Third, those who use vinegar. Vinegar, sour taste, sexual convergence. Soak realgar in vinegar, after a long time soaking, the quality of realgar may change. Take it out after soaking, dry it, and then refine it, or it can reduce the toxicity of realgar slightly, and it is easy to grind and easy to use in medicine.
However, it needs to be made clear. Although the ancients had various methods of synthesizing realgar, realgar is toxic after all. Even if it is an OECD system, it cannot be used lightly. In today's world, in the use of realgar, we should follow the scientific method and not fully trust the ancient techniques, so as not to hurt the body.

When storing methyl ether, it is a flammable and highly volatile gas. When storing, choose the first heavy container. It must be stored in a pressure-resistant and well-sealed container to prevent leakage. This is because once the methyl ether leaks, it is easy to cause the risk of ignition and explosion in case of open fire, static electricity, etc., which is very dangerous. And the storage place should be cool and ventilated to avoid heat and fire sources. In a hot environment, the methyl ether is heated and expanded, causing the pressure in the container to rise sharply, which also increases the risk of leakage and deflagration.
As for transportation, it should not be ignored. Transportation vehicles should be prepared with fire protection, explosion protection and emergency equipment. On the way, drive slowly and steadily to avoid sudden brakes and severe bumps, so as not to damage the container and cause methyl ether leakage. Transportation personnel must be familiar with the nature of methyl ether and emergency response methods. In case of emergencies, they can respond quickly and reduce the damage.
Furthermore, storage and transportation places should be marked with clear warning signs to indicate the danger, so that everyone is aware and cautious. And always check containers and transportation equipment to keep them intact. If there is a slight damage or hidden danger, it will be repaired and eliminated immediately, and it must not be tolerated.
All these are important for the storage and transportation of methyl ether. If you are careful, you will be safe, and if you are unaware, it will be dangerous and cannot be ignored.