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What are the chemical properties of 5-iodine-3-methylisothiazole-4-formamide?
There is no corresponding record on the related chemical properties of "3-methylbasic isovaleraldehyde" and "4-methylnaphthalene anthracene" in "Tiangong Kaiwu". The following is an imaginative description of the chemical properties of the two based on ancient texts:
Methylbasic isovaleraldehyde, according to its name, is known as the genus of alaldehyde. The aldehyde is mostly active and can often show its unique properties in various reactions. Methylbasic isovaleraldehyde, or has a fragrant taste, covers aldehyde substances, and often contains fragrance. Among its molecular structures, methyl groups are connected to isovaleraldehyde groups, which may make the properties of the substance unique. In the oxidation reaction, the aldehyde group is easily oxidized and turned into a carboxyl group, just like a change from weak to strong. In addition to the addition reaction, the carbon and oxygen double bond of the aldehyde group, like a lock to be opened, can be added with many nucleophiles to generate new compounds, just like attracting guests into the room and reconstructing new situations. And because it has a specific functional group, or in the way of organic synthesis, it is a key raw material for the birth of many compounds, just like masonry in Guangsha, it is the cornerstone of building an organic molecular edifice.
As for methylnaphthalene anthracene, it is a fused cyclic aromatic hydrocarbon. Fused cyclic aromatic hydrocarbons have a dense and stable structure, but they are not inactive. Methylnaphthalene anthracene, the structure of naphthalene and anthracene is merged, and methyl is added, or the original stable system is slightly variable. Its chemical properties, under the conditions of light or heating, can cause the transition of electrons and cause structural changes. The properties of aromatics, often can occur substitution reaction, benzene ring position, or for the main reaction. The connection of methyl groups, or affect the positioning of the reaction, so that the substitution reaction occurs preferentially at a specific position. And such dense ring aromatic hydrocarbons, due to the existence of conjugated systems, often have optical activity, or in the field of photochemistry, can show wonderful ability. For example, under light, a unique phenomenon of light emission occurs, like a dark night pearl, which is brilliant when exposed to light. Although ancient books did not contain these two, they are inferred by today's chemical interests, or have the above chemical properties, to be investigated in detail by future generations.
What are the common uses of 5-iodine-3-methylisothiazole-4-formamide?
"Tiangong Kaiwu" has a saying: "It is the clothes that are worn, and the beginning is also the origin of sericulture." The matter of sericulture is related to people's livelihood, and the growth of silkworms and the formation of silk in cocoons have their own methods. As for the common use of silkworm mothers, there are also many details.
The silkworm mother breeds silkworms, and the first choice of silkworm seeds. Silkworms of good breeds have a strong physique and a rich amount of silk. The method of selection is to always look at the body and color of silkworm moths, and choose those whose shape and color are correct and moist, so that they can be planted as moths. The moths mate and lay eggs, and the silkworm mother carefully protects them, depending on the appropriate temperature and humidity, to ensure the hatching of the eggs.
< Silkworms like to eat mulberry leaves, especially those that are fresh and tender and free from moths. When picking mulberry, according to the size of the silkworm, choose the old and tender leaves. Young silkworms eat leaves, and it is better to choose young leaves, which are soft and chewy; when they become silkworm-eating leaves, they can be slightly old. When you return from mulberry mining, you must make the leaves clean, remove their dew and dust, and feed the silkworms.
The growth of silkworms requires appropriate temperature and humidity. In the silkworm room, a brazier is always placed to warm it, and the heat is adjusted according to the season. In summer, it is hot and hot, and ventilated to dissipate heat; in winter, it is cold, and the windows are closed to keep warm. And sprinkle the ground with water to increase or decrease the humidity, so that the silkworms are in If the sleeping silkworm does not move, if it is dead, it is actually the period of molting and growth. At this time, avoid being disturbed, do not turn it frequently, and wait for the silkworm to molt and wake up before feeding the leaves.
When the silkworm is ready to form a cocoon, the silkworm mother watches its color change and knows that the cocoon will be formed. The harvest of the cocoon is related to the quality of the silk. Pick the cocoon at the right time, not too early, so as not to have enough silk; nor too late, the silk moth will break the cocoon, and the silk will be difficult to harvest.
In the matter of raising silkworms, the silkworm mother handles every step carefully. With her diligence and wisdom, she can practice this common way, so as to obtain a good cocoon and lay the foundation for the silk weaving
What is the synthesis method of 5-iodine-3-methylisothiazole-4-formamide?
To make acetonitrile, sodium cyanide can be used to react with halomethane. Sodium cyanide ($NaCN $) and halomethane, such as bromomethane ($CH_ {3} Br $), are mixed in a suitable container in a certain proportion. The chemical equation of the reaction is: $NaCN + CH_ {3} Br\ longrightarrow CH_ {3} CN + NaBr $. This reaction needs to be carried out at a suitable temperature and catalyst, usually with a suitable organic solvent as the reaction medium to promote the smooth occurrence of the reaction and improve the yield.
If acetyl hydrazide is made, ethyl acetate is often reacted with hydrazine hydrate. Take ethyl acetate ($CH_ {3} COOC_ {2} H_ {5} $) and hydrazine hydrate ($N_ {2} H_ {4}\ cdot H_ {2} O $) and place them in a reaction vessel in proportion as follows: $CH_ {3} COOC_ {2} H_ {5} + N_ {2} H_ {4}\ cdot H_ {2} O\ longrightarrow CH_ {3} CONHNH_ {2} + C_ {2} H_ {5} OH + H_ {2} O $. During the reaction process, it can be heated to increase the reaction rate. It is also necessary to pay attention to the control of the reaction conditions to avoid the occurrence of side reactions. After the reaction is completed, it needs to be separated and purified to obtain a pure acetohydrazide product.
To produce acetohydrazide, another method is to react with acetyl chloride and hydrazine hydrate. First take acetyl chloride ($CH_ {3} COCl $) and slowly drop it into hydrazine hydrate. Due to the high reactivity of acetyl chloride, the reaction is violent, so careful operation is required. The reaction equation is: $CH_ {3} COCl + N_ {2} H_ {4}\ cdot H_ {2} O\ longrightarrow CH_ {3} CONHNH_ {2} + HCl + H_ {2} O $. After the reaction, due to the formation of hydrogen chloride, appropriate measures need to be taken to deal with it, and then it needs to be separated and purified to obtain high-purity acetohydrazide.
What is the price range of 5-iodine-3-methylisothiazole-4-formamide in the market?
I look at this question and ask about the price range of Jialing paste in the market. Jialing paste is either a specialty of one party or has a unique effect, so everyone wants to know its price.
However, the market price often changes due to various factors. First, the price may be different depending on the origin. If Jialing paste is produced in a certain place, the soil is fertile and watery, the raw materials are good and the cost is low, and the price may be slightly cheaper; if it is produced in a distant place, it is transported over long distances, and freight and other fees are added, the price may be higher. Second, the quality is divided, and the price is also poor. Selected raw materials and finely made Jialing paste are of high quality, and the price must be higher than that of crude ones. Third, the price fluctuates when the seasons change. If there is a strong demand season, such as when it is hot in the summer, everyone wants to eat to relieve the heat, and the price may rise; if there is a low season, the demand is low, and the price may fall.
As far as I know, the price of ordinary Jialing paste in small shops in the market may be between 20 and 50 yuan per catty. If it is in bustling shops and big shops, the price may be as high as 80 yuan, or even 100 yuan, due to the high cost of renting the store. If it is a special and added Jialing paste, the price is even more uncertain, or more than 100 yuan.
However, this is only a rough price. The market varies from place to place, and the price is difficult to determine. If you want to know the exact price, you must go to the city in person and ask all merchants to get the actual price.
What are the environmental effects of 5-iodine-3-methylisothiazole-4-formamide?
In "Tiangong Kaiwu", where sulfur is combined with nitrate, and then gunpowder becomes sound. Among them, sulfur is sulfur, and nitrate is potassium nitrate. However, I don't know what you mean by "5-%E7%A2%98-3-%E7%94%B2%E5%9F%BA%E5%BC%82%E5%99%BB%E5%94%91". It is suspected that the expression is wrong, so it is difficult to discuss it in detail.
As for methyl ether, it is an organic substance. It is a flammable gas with a slight ether aroma at room temperature and pressure. Methyl ether has a certain impact on the environment. In the atmosphere, if methyl ether is released, it will participate in the carbon cycle process to a certain extent because it contains carbon elements. And methyl ether is flammable. If it accumulates in a specific space, it will easily cause combustion or even explosion in case of open flames, hot topics, etc., posing a threat to the surrounding environment and personnel safety.
From a chemical point of view, methyl ether is relatively active and can react with some substances, which in turn affects the local chemical environment balance. In some industrial production or use of methyl ether, if it is not properly treated and leaks, it may cause pollution to soil, water and other environmental media. If methyl ether seeps into the soil, it may affect the survival and activities of soil microorganisms and change the ecological structure of the soil. If methyl ether enters the water body, due to its solubility and other characteristics, it may affect the chemical composition of the water body, interfere with the living environment of aquatic organisms, and affect the growth, reproduction and other life activities of aquatic organisms.
