7-iodo-6-methoxyquinoline-4-ol

Mercury is a metal that is liquid at room temperature. It is soft, silvery white in color, and dazzling in light. It is like a moonlight pouring out, exuding a lively light.
Looking at its physical properties, the density of mercury is quite high, reaching 13.59 grams/cubic centimeter, which is even higher than that of ordinary metals, so it is placed on top of other things and often sinks due to gravity. Its melting point is extremely low, only -38.87 ° C, and it is difficult to solidify it even in the cold winter. The boiling point is 356.6 ° C. When heated, it slowly evaporates and turns into mercury vapor.
Mercury has excellent fluidity, and it touches like water, but it is abnormally condensed. Its surface tension is quite large, dripping on other things, often gathered into round beads, rolling freely, just like a smart jade bead, smooth and not stagnant.
Mercury also has characteristics in the conduction of electricity and heat. Although its electrical conductivity is not as excellent as that of good conductors such as copper and silver, it can also conduct current and play a role in specific circuits. Thermal conductivity is also considerable, which can transfer heat, but its efficiency is slightly inferior to some metals.
In addition, mercury is volatile, and at room temperature, it can slowly dissipate into mercury vapor. This gas is colorless and odorless, but it is toxic. If people inhale it carelessly, it will damage the body for a long time, especially the nervous system, kidneys, etc.
The chemical properties of mercury are relatively stable, and it is difficult to react with common substances such as oxygen and water at room temperature. However, when encountering strong oxidants, such as aqua regia, concentrated nitric acid, etc., it can chemically react with it to generate corresponding mercury salts.
In summary, mercury has been used in many fields due to its unique physical properties, such as thermometers, sphygmomanometers and other instruments. However, due to its toxicity, it must be used with extra caution and not a little negligence.

Mercury, also known as "mercury" in ancient times, is a unique chemical substance with many special chemical properties.
The first chemical properties of mercury are that it is liquid under normal conditions, which is a rare property among metals. As recorded in "Tiangong Kaiwu", most metals exist in ordinary environments in solid states. Only mercury is a liquid, just like smart silver water, which can flow at will and also take a unique form in containers.
Mercury has moderate chemical activity. When it reacts with oxygen, specific conditions are required. If heated to a certain temperature, mercury will combine with oxygen to form mercury oxide. This reaction is like a wonderful change. The originally flowing mercury combines with invisible oxygen to form another substance. And when mercury is mixed with sulfur powder, it can react rapidly to form mercury sulfide. This property is crucial in dealing with mercury leaks. Although the ancients did not have to fully understand its chemical principle, they may have found in practice that sulfur can restrain the escape of mercury.
Mercury can dissolve a variety of metals to form amalgams. This property is like mercury's magical power, which can integrate other metals into itself. Many metals can interact with mercury, just like water milk. Amalgam may also have applications in ancient times, such as in some metal processing processes, or with the help of the characteristics of amalgam to achieve specific effects.
Mercury compounds also have unique properties. Some mercury compounds are toxic and have different chemical stability. Its performance in chemical reactions, either participating in redox or as a catalyst to affect the reaction process, plays a diverse role in the stage of chemical change, adding many wonders to the chemical world.

Mercury is the most spiritual and good at changing, and it has a wide range of uses in the world.
In the art of alchemy, mercury is very important. Ancient alchemists believed in alchemy to seek immortality. Due to its unique chemical properties, mercury is often used as a key medium in the process of alchemy. It can react with many gold and stone medicines to help alchemists refine pills with different shapes and colors. Because mercury can combine with sulfur and other substances to form mercury sulfide, etc., changing the form and properties of the substance, alchemists hope to refine pills with miraculous effects, which can prolong life and be otherworldly.
In the field of medicine, mercury also has its uses. In the past, some doctors would treat diseases with mercury-containing drugs. Such as light powder, it has the effects of insecticide, attack poison, and astringent sores. External use can treat scabies, syphilis, and ulceration of sores. This is because mercury can inhibit or kill certain bacteria, and has a certain effect on skin diseases. However, although doctors knew its medicinal uses at that time, they did not fully understand that mercury is very toxic. Long-term or improper use can easily cause mercury poisoning and endanger human health.
In addition, mercury also plays a role in the metallurgical industry. When the ancients refined certain metals, they would use mercury and other metals to form amalgam. Amalgam is an alloy of mercury and other metals, formed by amalgam, and certain metals can be separated and extracted. For example, when extracting precious metals such as gold and silver, mercury is first mixed with precious metal ores to form amalgam, and then heated to volatilize the mercury, leaving high-purity precious metals. This was one of the important metallurgical methods at that time.
Although mercury has various uses, its toxicity should not be underestimated. In the process of alchemy, medicine and metallurgy, a little carelessness can cause mercury poisoning and endanger life. When the ancients explored the use of mercury, they achieved certain results and paid a lot of costs. This is the history of the ancient people's understanding and utilization of mercury.

Nowadays, there is a method for the synthesis of oxime, and I will describe it in detail. Oxime is a compound formed by the condensation reaction of aldose or ketone and hydroxylamine. There are several common methods for its synthesis.
First, aldose and ketone react with hydroxylamine hydrochloride in an alkaline environment. Take an appropriate amount of aldehyde or ketone, dissolve it in an appropriate solvent, such as alcohols, then add hydroxylamine hydrochloride, and then add alkali dropwise to adjust the pH. Sodium hydroxide, sodium carbonate and the like can be used as a base. Under this alkaline condition, hydroxylamine hydrochloride releases free hydroxylamine, and hydroxylamine nucleophilic attacks the carbonyl carbon of aldose or ketone, which is transferred by protons to remove water to obtain oxime. For example, acetone and hydroxylamine hydrochloride can be obtained under the action of sodium carbonate. The mechanism of the reaction is clear and the operation is more convenient.
Second, the reverse reaction of Beckmann rearrangement is used. Some specific amides can be reversed to form oximes after being treated under appropriate conditions. This process requires a specific catalyst and reaction environment. Usually Lewis acid is used as a catalyst, and under suitable temperature and pressure, the amide rearranges and converts to oxime. However, this method has certain requirements on the structure of the reactants, and it is not a universal method. However, it is quite valuable for the synthesis of specific compounds.
Third, indirect synthesis of halogenated hydrocarbons and hydroxylamines as raw materials. Halogenated hydrocarbons react with nucleophiles first, introduce specific groups, and then react with hydroxylamines. This process step is slightly complicated, and the reaction conditions need to be carefully controlled to ensure the yield and selectivity of each step. However, for some oximes that are difficult to synthesize directly from aldoxone, this is a feasible way.
All these numbers have advantages and disadvantages. In practical application, when considering the structure of the target product, the availability of raw materials, the difficulty of reaction conditions and other factors, choose the best one and use it to achieve the purpose of efficient synthesis of oximes.

Mercury is a highly toxic substance, and all things must be carefully stored and transported.
When hiding, seal it first. It must be stored in a solid and airtight container to prevent mercury from evaporating and escaping. Because it is very easy to dissolve gas at room temperature and pervades the surrounding space, if people inhale it, they will be harmed. And the material of the container is also exquisite. It is appropriate to use glass and ceramics, because it does not phase with mercury, which can keep the purity and stability of mercury.
It is also necessary to choose a cool and ventilated place to hide it. Mercury evaporates rapidly when heated, so it is necessary to avoid heat. In the warehouse, the temperature should be controlled at a lower level, and the air circulation must be good. However, when ventilating, it is also necessary to prevent mercury gas from escaping and causing poisoning to the surrounding environment.
As for transportation, the packaging must be firm. Outside the mercury container, it should be wrapped in thick materials, such as wooden boxes, plastic foam, etc., to cushion vibration and collision, so as to prevent mercury leakage caused by the damage of the mercury container. And the transportation vehicle should also be clean, and there should be no other chemicals mixed with it to prevent accidents from interacting with it.
The escort must have professional knowledge, familiar with the characteristics of mercury and emergency methods. During transportation, always pay attention, and if there is any abnormality, such as changes in odor or damage to packaging, dispose of it immediately. Once the mercury leaks, cover it with sulfur powder as soon as possible to reduce the toxicity of mercury sulfide and then clean it up according to regulations.
The storage and transportation of mercury is related to life and the environment, and nothing can be slack. Everything can be done in accordance with the rules to ensure safety.