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What are the chemical properties of 3-iodine-4-fluorobromobenzene?
"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty. Today, with its literary style, the chemical properties of 3-nitrate-4-river mud alum are as follows:
3-nitrate, there are many kinds, common fire nitrate (potassium nitrate, $KNO_ {3} $), mirabilite (sodium sulfate, $Na_ {2} SO_ {4}\ cdot10H_ {2} O $), etc. Take fire nitrate as an example, its salty, bitter, cold, and non-toxic. Fire nitrate white matter is better, often crystalline, placed in fire, can support combustion, and the flame color is purple, because it contains potassium. In case of combustible materials, it can burn violently, which is because of its combustion-supporting properties. In the ancient gunpowder formula, fire nitrate is one of the key ingredients. It is mixed with sulfur and charcoal in a specific ratio and explodes after ignition. It has great power and is mostly used in military and fireworks production.
As for 4-river mud alum, it is actually an iron-containing sulfate mineral. It is commonly used as water green alum ($FeSO_ {4}\ cdot7H_ {2} O $), which is mostly born in river mud. Its color is green, and when it first comes out, it is cold and sour. In the air, it is easy to weathering, losing its crystalline water, and the color gradually turns slightly yellow. And river mud alum is reductive and can react with many oxidizing substances. If the river mud alum solution is co-located with the copper sheet, it can be seen that there is black matter precipitation on the surface of the copper sheet, which is the reason why iron replaces copper, because the metal activity is stronger than copper. Furthermore, the river mud alum can decompose when heated, generating gases such as sulfur dioxide, and leaving a red iron oxide residue, which is an important chemical property of the river mud alum.
What are the physical properties of 3-iodine-4-fluorobromobenzene?
"Tiangong Kaiwu" cloud: "Water is a disaster, only by boat. The materials of the boat are mostly camphor wood, nanmu, catalpa wood, locust wood, sandalwood, etc., and the use of the boat is only good for nanmu.
The quality of the boat is related to the stability of the water, the amount of cargo carried, and the durability. Nanmu is strong and dense, with beautiful texture, water and moisture resistance, and can resist rot. Its quality is heavy but not sinking. When placed in water, it is like a duck in water, and it is as stable as a rock. It can protect the boat in the rivers, lakes and seas. It will not be damaged after wind and rain.
And the nature of nanmu is not afraid of insects. On the banks of rivers, moisture is always prosperous, and there are many silverfish insects breeding. However, nanmu is naturally insect-proof, which can protect the boat from insects and ants, and maintain its sturdiness for a long time. In addition, nanmu grows slowly, the wood is dense, and its strength is very high, which can withstand the pressure of heavy objects. Therefore, the boat is made of nanmu, which can carry many goods and sail smoothly on the water.
Furthermore, the aroma of nanmu is quiet, and the human performers of the boat can clear the mind and create a pleasant environment. And this aroma can also repel insects, and the goods in the boat also have the power of protection, so as not to be damaged by insects.
All these kinds of things, all see the use of nanmu in the boat, which is unique. It is an ancient man-made boat with a unique clock in Nanmu to ensure the smooth transportation of rivers and rivers and the prosperity of business and trade.
What fields are 3-iodine-4-fluorobromobenzene used in?
3-4-4-Those who live in the mountains and forests, where they can be used, and where they can be used, are plants and trees. Those who live in the mountains and forests, where the things live, and the plants and trees or the trees. Avoid the, Avoid it, the grass and trees are safe.
On the side of the field, it also has its merits. Those who live in the field, they are related to people's livelihood, the damage is wreaking havoc, and the crops are not harvested., can eliminate the harm, and protect the crops., can be clothed and fed.
To be in the well of the city, And when it comes to bruising and beating, it can remove blood stasis and relieve pain, and help those who suffer early.
And when it comes to it, it is also indispensable. The concubine is not rich, but she also has many diseases. It can be used for body care, beauty care, and safety.
It can be used in mountains, fields, markets, and other fields. Or things, or people's livelihood, or epidemic prevention, or health care.
What is the synthesis method of 3-iodine-4-fluorobromobenzene?
To make the third-rate mercury, the method is as follows:
Take the sand first and place it on the crucible. For the sand, the mercury sulfide is also red and bright. Fired with charcoal fire, the firepower is even and medium. When the sand encounters the sand, it decomposes the mercury and sulfur. Sulfur, flammable things, dissolve and escape in case of fire. The mercury liquid is gold, heavy in nature and flows, and condenses at the bottom of the crucible.
When reacting, be careful to remove the mercury in the crucible and store it in a dense vessel to prevent it from burning. Mercury is toxic, and the operation must be careful to avoid its steaming and inhalation.
If you want to get more mercury, you can do the steaming method again. The newly obtained mercury is placed in the steamer, add. When the boiling temperature of mercury is low, it is evaporated immediately after adding. In a condenser, the mercury in the condensate liquid is re-condensed when it is cold, and dripped into the collector below. In this way, the evaporation can be removed, and the degree of mercury can be greatly increased.
Or it can be improved by the method of melting. In a suitable solution, the mercury containing mercury is mixed, so that it is soluble in solution, but the mercury is insoluble. Set the separation, remove the mercury below, and wash it with water for two times to remove the remaining solution. Mercury can also be obtained.
In addition, the method of making mercury should be operated carefully and follow its chemical properties to obtain mercury.
What is the market price of 3-iodine-4-fluorobromobenzene?
"Tiangong Kaiwu" says: "The silk, hemp, fur, and brown in the world all have qualities, so that the special face can still be distinguished. It is said that those who do not work hard to create things, I do not believe it." The price of silk on the waterfront depends on the time and quality, and it also depends on the distance of the earth and the fineness of the work.
The silk on the waterfront is at the beginning of its life, and the silkworm has completed the work, and the silk has been reeling into strands. Its land is fertile and mulberry, and the silkworm is full and the silk is plump. Those with excellent quality will be more expensive than the regular product. If the silkworm is barren due to disasters, and the mulberry withers up in case of drought,
As for the location of the city, near the water, the boat is smooth, and the silk transfer is not stagnant, the price is flat and easy to sell. If it is difficult to transport by land in a remote mountain, the price may be high because of it, but it is also necessary to ask for Yin Ye.
And the quality of the work is also very different from the price. Those who are skilled in reeling, the color of the silk is smooth, and the strips are even and thin, which can be a splendid material, and the price is high. If the reeling is rough, the silk is many bumps, and the color is dark and evil, it can only be used for ordinary purposes, and the price must be low.
The abundance of apologies from time to time has a huge impact on the price of silk. When the year is rich, the people will be rich, and those who seek silk will be many, and the price will rise; when the year is sorry, the people will be poor and those who buy will be thin, and the price may fall.
Therefore, the price of silk by the waterfront, its market price, can not be determined at one end. The fertility of the land, the passage of transportation, the clumsiness of work, and the abundance and ferocity of the time, all go together, and then the price will be high and low. Those who are based on silk, must check the sky and the time, judge the land, and refine their work. How many people get a good price and profit.