Alpha 4 Dibromo 2 Iodotoluene

Although "α, 4-dichloro-2-menaphthoquinone" is not directly described in "Tiangong Kaiwu", I can analyze it in the form of ancient Chinese words according to chemical principles and the ancient cognition of material properties.
α, 4-dichloro-2-menaphthoquinone, the appearance may show a specific color state. It may have a certain stability, at room temperature, or can be relatively stable in a specific environment. However, in case of extreme conditions such as high temperature and open flame, it may change, such as combustion and decomposition.
Its chemical activity is quite critical. The molecular structure of α, 4-dichloro-2-menaphthoquinone makes the chlorine atom interact with the structure of naphthoquinone. The chlorine atom has a certain electronegativity, or makes this compound easy to participate in the substitution reaction. In case of nucleophilic reagents, the chlorine atom may be replaced by a nucleophilic group, resulting in a nucleophilic substitution reaction.
In addition, because of its quinone-containing structure, it may have redox properties. Under appropriate circumstances, the quinone group can accept electrons and be reduced to the corresponding hydroquinone form; conversely, hydroquinone can also lose electrons and reoxidize to quinone. This redox process may play an important role in many chemical reactions and biological
In terms of solubility, it may vary depending on its molecular polarity and the properties of the solvent. If the polarity of the solvent is similar to that of α, 4-dichloro-2-menaphthoquinone, or it can be well miscible; conversely, it may have poor solubility.
And this compound may have certain toxicity. In living organisms, it may interfere with normal physiological and biochemical processes, such as affecting cell metabolism, destroying the structure and function of biofilms, etc. Although the ancients did not know this specific compound, their understanding of the toxicity of substances may be similar to this, such as the nature of poisonous weeds and poisons. α, 4-dichloro-2-menaphthoquinone has a variety of chemical properties, and can exhibit different chemical behaviors and characteristics under different conditions.

"Tiangong Kaiwu" contains borax, which has a wide range of uses. In metallurgy, it has an extraordinary effect. When casting swords, adding borax to the furnace can remove metal impurities and make it pure in texture. The cast sword has a sharp and tough edge, which is actually a key aid for weapon casting.
It is also very useful in ceramic firing. Adding borax to the glaze can reduce its melting point, making it easier to evenly cover the surface of the utensils during firing, making the ceramic glaze smooth and bright in color, and enhancing its wear resistance and corrosion resistance, improving the quality of ceramics.
The art of alchemy and pharmaceuticals, borax is also indispensable. It can be used for medicinal purposes, can clear away heat and detoxify, and has curative effects on sore throat, red eyes, swelling and pain. In the refining process of medicinal pills, borax can regulate the reaction, promote the fusion of drug ingredients, and make the medicinal effect of medicinal pills better.
In addition, in the field of printing and dyeing textiles, borax can be used as a mordant. When fabrics are dyed, borax can be attached to fabric fibers, and the dyeing is uniform and firm, not easy to fade, and the color is lasting and bright, adding a lot of color to textile printing and dyeing. Borax is widely used and has important value in many processes and medical fields.

To prepare the compound of α-4-dialdehyde-2-methylnaphthalene, the method is as follows:
First take an appropriate amount of methylnaphthalene and place it in a clean kettle. With a specific catalyst, add an appropriate amount of reaction gas, and under the conditions of precise temperature and pressure control, make it undergo a specific chemical reaction. This reaction needs to be carefully controlled. Due to a slight difference in temperature and pressure, the reaction may be biased to other ways, affecting the purity and yield of the product.
After the first step of reaction is completed, the product is finely separated and purified to remove unreacted raw materials and by-products. Pure intermediate products can be obtained by distillation, extraction and other methods.
Then, the intermediate product is moved to another reaction device, a specific reagent is added, and the reaction is reacted again under suitable reaction conditions. This step aims to introduce an aldehyde group to form the structure of α-4-dialdehyde-2-methylnaphthalene. This process also requires strict control of the reaction conditions, and the amount of reagents used and the reaction time must be accurately controlled.
After the reaction is complete, the product is further purified in depth, such as recrystallization, column chromatography, etc., to achieve extremely high purity requirements. After this series of delicate steps, the compound of α-4-dialdehyde-2-methylnaphthalene can be obtained. Every step of the operation requires careful attention. If you are not careful, it will be difficult to achieve the desired product.

"Tiangong Kaiwu" says: "All cans of molten copper for casting money should be made of fine soil powder (broken dry earth bricks are wonderful) and charcoal powder. The material of the cans is ten taels, the soil is seven and the charcoal is three. The carbon ash is warm, and the soil is used to make it easy to melt. The jar is eight inches long and the diameter is two inches and five points." In the molten copper for casting money, it is related to the quality of coinage. Many of the precautions are related to materials, utensils, heat, etc. There are also some aspects to be investigated in today's storage and transportation.
When storing, it is necessary to choose a dry place and avoid the shade and dampness. Because of the genus of copper and iron, it is easy to rust in contact with water, and rust will damage its quality and damage its use. If hidden in a warehouse, the warehouse must be high and dry, paved with bricks and stones, and a few inches off the ground to prevent the earth's air from invading. And do not mix with other things to prevent them from eroding each other. Materials made of copper coins, if contaminated with filth, or mixed with other metals, it is difficult to make good coins when casting.
During transportation, the first priority is to be stable. On the road of driving, avoid rough roads, choose a flat road, and prevent objects from bumping and colliding. If transported by boat, it also needs to be stabilized in the cabin, and it must not be shaken at will. And on the way, it must be protected from wind and rain. If it encounters rain, the material will be soaked, and it is easy to rust. Escorts, when careful, always check, do not neglect.
Furthermore, whether it is storage or transportation, it should be recorded. When to collect and store, what geometry, and where to ship should be clear for inspection. In this way, the process of storage and transportation can be orderly, so that the materials of the coins are not damaged, and the coins are minted smoothly.

The content of "Tiangong Kaiwu" is mostly the technical process of the Ming Dynasty and before. Although it is difficult to directly give an ancient classical answer to the question of "the impact of sodium α-alkenyl sulfonate on the environment and human health", which is a modern chemical substance, it can be imitated in its style and discussed as follows with a logic similar to the cognition and expression of the ancients:
There is a thing today called sodium α-alkenyl sulfonate, which is often used in the chemical industry of the world. This thing may have various effects on the environment. If it is applied to water and soil, or in harmony with various things in the soil, will it change its nature? If it flows into Chuanze, the ecology of water may be disturbed by it. Aquatic things, such as fish, turtles, shrimp and crabs, may feel uncomfortable, and their growth and reproduction path may be tortuous. Water plants, etc., may also be at risk of state change, because of the transformation caused by water, which is not fully known.
As for human health, this thing touches the skin, or there is a feeling of itching. If you are not careful to enter the eyes, there are also hidden dangers for the safety of the eyes. If there is occasional contamination between food and drink, it enters the internal organs, and the ability of the internal organs to transport and transform may be messed up. Although today's people often use it for washing and cleaning, they cannot ignore its potential harm.
The ancients did not recognize this sodium alpha-alkenyl sulfonate, but the principle of observing things is consistent. Everything has advantages, or there are disadvantages. Those who use this object should be cautious, carefully observe its response to the environment and the human body, and strive to avoid harm and profit, so as to ensure the harmony of heaven and earth and the safety of the human person. It must not be ignored for its temporary effect, and its long-term troubles should be ignored. It is suitable for the ancients to respect the sky and cherish things and seek the way of balance.