3-Chloropyridine-4-carboxaldehyde

Mercury has a good nature that flows away, and when it comes to fire, it flies, so the Dan family values it. However, it is a thing, poisonous and can kill people, so you must not be careful.
Lead is the ancestor of hardware, and the essence of the water in the north. Its color is black, and it contains golden wealth, which is the essential medicine for cultivating Great Dan.
Mercury is often used in the way of alchemy, and it is often the symbol of true yin. The Alchemy Classic goes: "Mercury originally comes out of lead, and its nature is good to fly." Mercury is agile, a metaphor for the primordial spirit of people, erratic, and easy to disperse by foreign objects. Alchemists want to use lead to make mercury, so that the nature of mercury is fixed, such as using true yang to make true yin, so that the primordial spirit returns to its place, and Therefore, in alchemy, mercury is often something that needs to be captured and controlled by the law, so that it can be combined with lead and other medicines to form a great pill.
The main use of lead is that it is a symbol of true yang. Lead hides the innate Qi, which is the foundation of alchemy cultivation. The "Shentong Deed" says: "Hu powder is thrown into the fire, and the color is bad, but it is also lead." Although lead has changed, its essence remains unchanged, which means that the nature of true yang is constant. During alchemy, the true yang of lead and the true yin of mercury are used, and the two are sympathetic, and the yin and yang are harmonized, so that the holy fetus can be conceived. The thickness and stability of lead can suppress the flying of mercury, so that the spirit and qi can be combined and condensed. The interaction between lead and mercury, one yin and one yang, and the cycle repeats. In the cauldron furnace, it simulates the wonders of heaven and earth, and forms the Great Dao of Jindan. The two complement each other and are an indispensable key drug in alchemy.

Mercury has unique characteristics among hardware. It is a liquid metal that is often silvery and lustrous, warm and flowing, like silver water. It can flow freely at room temperature and feels cool and smooth to the touch.
Mercury has a high density and is heavier than common metals. When placed on objects, it can often be slightly deformed due to its own weight. And its boiling point is relatively low. When heated, it easily turns into a curl of mercury vapor that rises in the air. This mercury vapor is colorless and intangible, but it is toxic and cannot be ignored.
In addition, the chemical activity of mercury also has its own unique characteristics. It can form amalgam with many metals, which may be different from the original metal. If it encounters with precious metals such as silver and gold, it can be fused into amalgam, which is easy to separate and extract metals. This property is also used in ancient metallurgy.
However, the toxicity of mercury is its most significant physical property and requires vigilance. If people accidentally contact, penetrate through the skin, or inhale mercury vapor, they can cause poisoning. Minor cases, physical discomfort, dizziness; severe cases, endanger life and damage the viscera. Therefore, when the ancients used mercury, they were more cautious. In short, the physical properties of mercury are not only wonderful and unique, but its toxicity also warns everyone to use it with caution.

"All mercury is the liquid of Dan sand, and its nature is good to flow but difficult to overcome." Mercury is also another name for 3-hydroxypropionitrile. Mercury's chemical properties are unique and wonderful.
Mercury is in the shape of a liquid at room temperature, and its silver light shines like smart silver water. Its fluidity is excellent, it flows when it touches things, and it is difficult to be confined in one place. It seems to have an uninhibited nature.
Mercury's chemical activity is also unique. It is easy to evaporate when heated, curling and rising, and turning into invisible mercury vapor. This gas is highly toxic and can be inhaled inadvertently, which is harmful.
However, mercury also has the property of affinity for metals, and can form amalgam with many metals, just like making close friends and fusing into one. This property has also been applied in metallurgical processes in the past, and can help extract certain metals.
Mercury can exhibit a variety of valence changes in chemical reactions. When it encounters strong oxidizing agents, it can increase its valence state and exhibit reducing properties. If a suitable reducing agent is used, it can reduce its valence state and demonstrate oxidizing properties.
As for methylmercury, it is an organic mercury compound, which is especially toxic than mercury. Methylmercury is relatively stable in nature, difficult to degrade in the environment, and easy to accumulate in organisms. Its chemical properties are also different from mercury. It is more soluble in organic solvents and can gradually accumulate in organisms through the transmission of the food chain, eventually endangering ecological balance and human health. The chemical activity of methylmercury can participate in various organic chemical reactions under specific conditions, which has a profound impact on the chemical cycle of the ecological environment.

As for the synthesis of methyl ether, there are also many wonderful methods.
First, methanol can be obtained by dehydration of methanol. Under the action of appropriate catalysts, such as concentrated sulfuric acid and γ-alumina, methanol is heated to dehydrate. The chemical formula is:\ (2CH_ {3} OH\ stackrel {catalyst} {\ longrightarrow} CH_ {3} OCH_ {3} + H_ {2} O\). When concentrated sulfuric acid is used as a catalyst, it is necessary to pay attention to the temperature of the reaction. If the temperature is too high, it is easy to produce by-products such as ethylene. As a catalyst, γ-alumina has relatively mild reaction conditions and good selectivity.
Second, the method of directly synthesizing methyl ether from synthesis gas. This is a one-step synthesis of methyl ether using carbon monoxide and hydrogen as raw materials under the action of a specific bifunctional catalyst. This catalyst has both the active center of methanol synthesis and methanol dehydration. In the process, carbon monoxide and hydrogen generate methanol at the active site of methanol synthesis before methanol synthesis, and methanol is then converted into methyl ether at the dehydrated active site. This method has high atomic utilization rate and can utilize coal, natural gas and other resources to produce methyl ether through the synthesis gas route, which has great potential for development.
Third, the method of hydrogenation of carbon dioxide to produce methyl ether. Carbon dioxide is used as raw material and reacts with hydrogen under the action of a catalyst to generate methyl ether. This process can not only realize the resource utilization of carbon dioxide, but also conform to the concept of green chemistry. The catalysts used are mostly composed of copper-based catalysts and molecular sieves, and the two work synergistically to promote the reaction. However, this method still faces challenges such as improving the activity and stability of the catalyst.
All methods for synthesizing methyl ether have their own advantages and disadvantages. It is necessary to choose the best one according to the actual situation, such as the availability of raw materials, cost, environmental protection requirements, etc.

Mercury is a highly toxic substance, and many matters need to be paid attention to when storing and transporting methylmercury.
Store methylmercury in the first environment. When placed in a cool, ventilated and dry place, away from fires and heat sources. Because it is volatile when heated, highly toxic gas escapes and endangers the surrounding area. And it needs to be stored separately from oxidants, acids, etc. to prevent mutual reaction and cause danger. The temperature and humidity of the warehouse should also be strictly controlled. The appropriate temperature and humidity can keep the stability of methylmercury.
The choice of container is crucial. Containers that are airtight and have good corrosion resistance must be used. Although the glass material is transparent and easy to observe, it may react with methylmercury in some cases, so special metal containers or high-performance plastic containers are mostly used, and the containers must be checked regularly. If there is any damage or leakage, they should be replaced immediately.
When transporting methylmercury, the qualifications of personnel are the first. Transporters must undergo professional training and be familiar with the dangerous characteristics of methylmercury and emergency treatment methods before they can go on the road. Transportation vehicles are also exquisite, and they must be equipped with corresponding emergency treatment equipment and protective equipment, such as fire extinguishers, adsorption materials, gas masks, etc.
Driving route planning should not be ignored. Sensitive places such as densely populated areas and water source protection areas should be avoided, and the designated route should be driven according to the designated route, and no stops should be allowed during transportation. In the event of an emergency, such as a traffic accident causing the container to be damaged, emergency measures should be taken immediately, evacuate the surrounding people, seal the scene, report to the relevant departments in time, and professionals will deal with it quickly.
In short, the storage and transportation of methylmercury is related to life safety and environmental safety, and every link must be operated in strict accordance with regulations, and there is no room for slack.