6-BROMOPYRIDINE-3-CARBOXALDEHYDE

Mercury, commonly known as mercury, is one of the metals. Its quality is special and very different from ordinary things.
Mercury is liquid at room temperature, and it is as smart as water, so it is named "mercury". Its color is silver-white and its luster is dazzling. It looks like flowing silver, shining brightly.
Mercury has a high density, heavier than many common things. When it is filled with utensils, it is found to be abnormally heavy. And the boiling point of mercury is low, and it is easy to turn into steam when heated, which drifts in the air. This vapor is highly toxic and accidentally inhaled, injuring the body and endangering life.
Mercury has good electrical conductivity and is also useful in electrical experiments and some equipment. However, due to its toxicity, it should be used with extreme caution.
Mercury is in metals and has unique properties. Its liquid state is easy to flow and can penetrate into tiny gaps. And it can form alloys with many metals, called amalgam. Amalgam also has special properties and is used in metallurgy, medicine and other fields.
Although mercury is a metal, it is not like iron, copper and other common tools that can be forged and processed. Its unique physical properties not only give it special uses, but also bring many risks to use. The world uses mercury, and it is the right way to know its properties, make good use of it, and avoid its harm.

Mercury, also known as "beautiful girl", is the only metal that is liquid at room temperature. Although the chemical properties of mercury are not detailed in "Tiangong Kaiwu", its properties can be obtained from ancient books and various studies as follows:
First, mercury is volatile. Often at room temperature, it quietly turns into mercury vapor, which permeates the surrounding space. Although this property is invisible and colorless, it is very toxic. If people inhale it carelessly, it will damage the organs for a long time, especially the liver and kidneys.
Second, mercury can form amalgam with many metals. Such as gold, silver, etc., when it encounters mercury, it dissolves and blends like water and milk. This property is very useful in ancient metallurgy, and is often used as a way to extract gold and silver. Mercury is used to capture gold, and after heating, the mercury gas dissipates and the gold remains, resulting in pure gold.
Third, mercury has unique chemical activity. When it meets sulfur, it quickly combines to form mercury sulfide, which is vermilion in color. This is cinnabar. In ancient times, cinnabar was often an important substance for pigments and alchemy. Mercury can react with oxygen. When heated, mercury oxide gradually forms, but this reaction is reversible. When heated, mercury oxide can be restored to mercury and oxygen.
Fourth, mercury salts are mostly toxic. After mercury compounds dissolve in water, ionic mercury is easily ingested by organisms and enriched in the body, triggering bioaccumulation effects, endangering ecological balance and human health.
The chemical properties of mercury are both practical and potentially dangerous. Although the ancients did not know the details of mercury when they used it, they gradually realized in practice and used it cautiously to avoid its harm.

Mercury, in the practice of alchemy, its use is quite critical. Although "Tiangong Kaiwu" is not dedicated to alchemy, it is involved in traditional cognition.
Mercury, in alchemy, is often the key thing. One is that it can be used as a medium to promote chemical reactions. The key to alchemy is to refine all kinds of gold and stone medicines in order to transform and sublimate. Mercury is agile, lively and changeable, and can react with many metals to form amalgam. For example, taking lead-mercury refining as an example, lead is heavy and heavy, and mercury is light and agile. When the two meet, mercury can disperse and fuse lead, accelerate the change of lead in the refining process, make lead more likely to react with other drugs, and promote the transformation of alchemy.
Second, mercury plays an important role in the pursuit of longevity medicinal pills. The ancients believed that the medicine of gold stone can prolong life, and mercury is regarded as a key ingredient that may achieve this goal due to its special physical and chemical properties. In the refining of longevity medicinal pills, mercury is often included in the formula. The Dan family believes that after many refinements, mercury can remove toxicity, retain essence, and become an ingredient that can prolong life. For example, when refining some outer alchemies, mercury and cinnabar are repeatedly refined, hoping to obtain medicinal pills that can nourish the human body and delay aging.
Third, mercury also plays a role in symbolism. In the concept of Dan Dao, mercury often symbolizes Li Fire, Primordial Spirit, etc. In the concept of the small universe of the human body, it corresponds to the heart and other internal organs. The change of mercury in the process of alchemy is analogous to the change of human mental state. The refining and sublimation of mercury symbolizes the cultivation and improvement of human spirit, and the transformation of mercury in the pill cauldron symbolizes that people reach the realm of spiritual detachment through cultivation. Therefore, mercury occupies an important position in the ancient alchemy and alchemy concepts, whether it is the actual refining reaction or the spiritual symbol level.

The preparation of Fuliuhe porridge is related to the compatibility of ingredients, and its subtlety has been valued by the Fang family since ancient times. As for the synthesis method of Sanyang wheat, there are also many ways, let me come one by one.
The first recommendation is based on grain. Rice, millet, millet, wheat, and beans, these five grains are the foundation of health preservation. Choose excellent wheat, wash it clean, put it in a kettle, add an appropriate amount of water, and boil it slowly. During this time, it is crucial to grasp the heat. If the fire is fierce, it will be easy to burn, and if the fire is slight, it will be difficult to ripen. Wait for the aroma of wheat to overflow and the soup to be thick. This is the first step.
Furthermore, supplemented by various medicines. Such as ginseng and astragalus, which have the effect of replenishing qi; wolfberry, cooked land, etc., which have the power of nourishing yin. According to the principle of compatibility of prescriptions, the monarch and the minister are envoys, and each is in his place. Ginseng is the king, which replenishes vitality; Astragalus is the minister, which helps people with ginseng and nourishes qi; wolfberry and cooked land are the two, which nourish yin, in case it replenishes qi too much and injures yin; it can also be supplemented with licorice to reconcile various medicines. Compound the medicines in proportion, process them finely, or study them into powder, or cut them into thin slices, blend them with the boiled wheat liquid, and then simmer them slowly over low heat to fully penetrate the medicinal properties.
Repeat, add seasoning as appropriate. The sweetness of honey and rock sugar can be adjusted and the taste can be adjusted; the fragrance of cinnamon and fragrant leaves can add flavor. However, the seasoning should not be excessive, so as not to take away the positive taste of wheat and medicine. Just add a little or two to make the porridge mellow and fragrant.
When cooking, you must be patient and focused, and you must not slack a little. Observe its heat, observe its color, and smell its smell. Success will be achieved when the porridge is thick, warm in color, and fragrant in smell. The three-yang wheat synthesized in this way has not only the nourishment of grains, but also the effect of medicines, and the taste is pleasant, which is the best for health care.

Those who use mercury are extremely poisonous and good at flowing. They should be careful when hiding it and losing it.
When storing mercury, the first thing to pay attention to is the equipment. It is necessary to choose a sturdy and dense equipment to prevent leakage. If there are micro-gaps in the equipment, the mercury escapes outside, and its poison is pervasive, hurting people invisibly. And mercury is easy to adsorb to objects, and the hiding place must also be clean, so as not to mix with dust and make it impure. Furthermore, the hiding place should be cool and dry, protected from heat and light. Mercury is easily volatilized when heated, and the toxic gas rises, which is very harmful.
As for mercury transmission, there are also many points to pay attention to. The hand of the loser must be steady and accurate to prevent it from pouring. The way is easy to pass, and do not block it. The tools for transporting mercury should also be carefully selected to fit the nature of mercury. And when transporting mercury, everyone around should stay away to prevent accidental contact with poisoning. If mercury is accidentally scattered during transporting mercury, it should be covered with sulphur as soon as possible. Mercury and sulphur combine and turn into non-toxic things to avoid disaster.
And the storage and transportation of mercury need to be handled by a special person. This person must be familiar with the nature of mercury, know its benefits and hazards, follow the laws, and must not slack off. If there is a slight mistake, it will harm himself, and it will also burden others. Therefore, the matter of storing mercury and transporting mercury should not be ignored. You must be in awe and strictly abide by the rules to ensure safety.