2 Iodo 3 Fluorotoluene

"Tiangong Kaiwu" records that ramie is mainly used to make fabrics such as summer cloth. The ramie fiber is slender, tough and shiny, absorbs moisture and dissipates heat quickly, and the made summer cloth is cool and comfortable. It is an excellent material for ancient summer clothing.
Ramie can also be used for rope weaving. Because of its high fiber strength, the rope made is strong and durable, and is widely used in binding heavy objects and building structures. For example, binding wood during construction, or fixing sail ropes during ship sailing, can play an important role.
In papermaking, ramie is also used. It can give good toughness and texture to the paper, making the paper durable. It is often used to make paper products with high quality requirements such as painting paper and ledger paper. In addition, the roots and leaves of ramie also have certain medicinal value. The roots can clear heat and cool blood, calm the fetus, etc., and the leaves can stop bleeding and detoxify.
Ramie played an important role in the textile, rope weaving, papermaking and pharmaceutical fields of ancient social production and life, and was a widely used economic crop.

"Tiangong Kaiwu" cloud: Alum is in the shape of hardware gold color, sulfur is the general of a group of stones, all of which change in fire. There are many types of alum, and among the genera of alum, there are flame nitrate, green alum, alum, bile alum, etc. Among them, flame nitrate and sulfur are combined, which are essential medicines for firearms. However, the alum mentioned here refers to green alum, also known as saponin, that is, ferrous sulfate crystal is also.
The nature of green alum, green in color, like glass, or like needle-shaped crystals. Its quality is brittle and easy to break. At room temperature, it is placed in the air for a long time, and it weathers, loses its crystalline water, and gradually changes in color. Green alum is soluble in water, and its aqueous solution is light green, which is the characteristic of ferrous ions.
Green alum changes when it is exposed to fire, and the wonders of its change cannot be ignored. Calcination of green alum will release pungent gases, which are sulfur dioxide and sulfur trioxide. And after calcination, green alum will produce a red powder, that is, iron oxide, also known as iron red, which can be used as a pigment.
Green alum is widely used in industry and medicine. In industry, it can be used to make iron salts, inks, and also mordants; in medicine, it can be used as medicine, with the effect of nourishing blood, and the main treatment is blood deficiency and yellowing.
Although alum-like things have their own characteristics, the characteristics of green alum are unique among all alum. Their changes and uses are all valued by the ancients, and they are really a wonderful thing between heaven and earth.

In "Tiangong Kaiwu", lead is zinc, and its smelting method is quite exquisite. In the past, when lead was smelted, calamine (zinc carbonate) and charcoal were mostly placed in mud cans. Seal the mouth of the can and calcine it over coal fire. Calamine is decomposed into zinc oxide when heated, and charcoal reduces zinc oxide at high temperature, resulting in lead.
As detailed in the method, choose high-quality calamine first, and break it into small pieces. Make a can with special mud, and leave small holes in the bottom of the can for lead liquid to flow out. Spread calamine and charcoal in the tank, seal the mouth of the can, to prevent air from entering the tank to cause zinc oxidation. Put the can in the furnace and heat it with coal fire. The heat is very important, and it needs to be properly controlled. If the temperature is too low, the reaction is difficult to be sufficient; if the temperature is too high, zinc is easy to volatilize and lose. After calcination, zinc oxide is gradually reduced to metal zinc by charcoal, and liquid zinc flows out of the small hole in the bottom of the tank. After condensation, it is obtained.
Others use zinc ore as raw material. After beneficiation and enrichment, high-grade zinc ore is obtained. After roasting, the metal sulfides in the zinc ore are converted into oxides. After coke is used as a reducing agent, it is reduced at high temperature in a blast furnace or an electric furnace. Zinc escapes in a gaseous state and is collected by condensation. Zinc smelting with calamine is easy to find raw materials and relatively simple process; zinc smelting with zinc ore requires multiple processes such as beneficiation and roasting, but it can handle low-grade ores, and the output may be higher. With the change of times, the method of zinc smelting has been continuously refined and improved.

When you are hiding, you should pay attention to the place where you are. It is advisable to choose a dry, ventilated place away from water and fire disasters. If you are in a humid place, you will be easily invaded by moisture, causing its quality to deteriorate. And the temperature of the storeroom must also be appropriate. If it is too cold, it will condense, and if it is too hot, it will rot, which will damage its nature.
Furthermore, the utensils you hide should not be ignored. When you hold it with a strong vessel, it will prevent it from being damaged and leaking. And the seal of the vessel must be strictly fixed to prevent the entry of insects, ants and foreign objects.
As for transportation, the safety of the road is the most important thing. When traveling on land, you should consider the stability of the carriage and horse, and do not make it jump; when traveling on water, you should prevent the tilt of the boat and avoid the wind and waves. And the speed of transportation should also be moderate. If it is too slow, it will be delayed, or it will be changed; if it is too fast, it will be prone to danger and endanger the integrity of the workmanship.
When handling, the operator must be cautious. Lift it lightly and handle it lightly, without reckless force, so as not to damage its shape. And it is advisable to check it regularly during transportation to see if there is any abnormality. If there is any sign of damage or leakage, it will be dealt with quickly and cannot be delayed.
Also pay attention to things that go with you. Do not transport with all kinds of filthy and evil things that are resistant to each other, for fear that they will communicate with each other and damage the quality of the worker's armor. And the season of luck is also exquisite, to avoid the hot summer and the middle of winter, and to choose the wind and the sun to protect the safety of the worker's armor.
All these things are related to the key of the worker's armor and transportation, and cannot be ignored. But pay attention to everything, and keep the worker's armor intact for future use.

"Where sulfur is combined with nitrate, then gunpowder becomes sound." However, sulfur, especially 3-sulfur dimethyl ether, has many effects on the environment and human health.
At one end of the environment, it is volatile and escapes into the atmosphere, which can cause air pollution. And its chemical properties are active, and it reacts chemically in the atmosphere or with other substances to generate secondary pollutants, such as sulfur-containing aerosols. These aerosols can scatter and absorb solar radiation, affecting the radiation balance of the earth, and then have potential effects on climate. If it settles into water and soil through precipitation and other processes, it will cause acidification of water and soil, destroy the acid-base balance of the ecosystem, endanger the survival and reproduction of aquatic organisms and soil organisms, change the physical and chemical properties of the soil, and affect the absorption of nutrients by plants.
As for human health, 3-sulfur dimethyl ether has a pungent odor. Inhalation through the respiratory tract can stimulate the mucosa of the respiratory tract, causing symptoms such as cough, asthma, and shortness of breath. Long-term exposure may increase the risk of chronic respiratory diseases, such as chronic obstructive pulmonary disease and asthma. It may penetrate into the human body through skin contact, interfere with the normal physiological metabolism of the human body, affect the function of the nervous system, and cause headaches, dizziness, fatigue and other discomforts. And some sulfur-containing compounds have potential carcinogenicity. Although the carcinogenicity of 3-sulfur dimethyl ether may need more research to confirm, long-term exposure to high concentrations should also be vigilant for carcinogenic risks.
In summary, 3-sulfur dimethyl ether has a significant impact on the environment and human health. It should be treated with caution and strengthened prevention and control.